ilTree Class Reference

Tree class data representation in hierachical trees using the Nested Set Model with Gaps by Joe Celco. More...

Inheritance diagram for ilTree:

Collaboration diagram for ilTree:

Public Member Functions
	__construct ($a_tree_id, $a_root_id=0)
	Constructor @access public. More...
	initTreeImplementation ()
	Init tree implementation. More...
	getTreeImplementation ()
	Get tree implementation. More...
	useCache ($a_use=true)
	Use Cache (usually activated) More...
	isCacheUsed ()
	Check if cache is active. More...
	getDepthCache ()
	Get depth cache. More...
	getParentCache ()
	Get parent cache. More...
	initLangCode ()
	Store user language. More...
	getTreeTable ()
	Get tree table name. More...
	getObjectDataTable ()
	Get object data table. More...
	getTreePk ()
	Get tree primary key. More...
	getTableReference ()
	Get reference table if available. More...
	getGap ()
	Get default gap *. More...
	resetInTreeCache ()
	setTableNames ($a_table_tree, $a_table_obj_data, $a_table_obj_reference="")
	set table names The primary key of the table containing your object_data must be 'obj_id' You may use a reference table. More...
	setReferenceTablePK ($a_column_name)
	set column containing primary key in reference table @access public More...
	setObjectTablePK ($a_column_name)
	set column containing primary key in object table @access public More...
	setTreeTablePK ($a_column_name)
	set column containing primary key in tree table @access public More...
	buildJoin ()
	build join depending on table settings @access private More...
	getRelation ($a_node_a, $a_node_b)
	Get relation of two nodes. More...
	getRelationOfNodes ($a_node_a_arr, $a_node_b_arr)
	get relation of two nodes by node data More...
	getChildIds ($a_node)
	Get node child ids @global type $ilDB. More...
	getChilds ($a_node_id, $a_order="", $a_direction="ASC")
	get child nodes of given node @access public More...
	getFilteredChilds ($a_filter, $a_node, $a_order="", $a_direction="ASC")
	get child nodes of given node (exclude filtered obj_types) @access public More...
	getChildsByType ($a_node_id, $a_type)
	get child nodes of given node by object type @access public More...
	getChildsByTypeFilter ($a_node_id, $a_types, $a_order="", $a_direction="ASC")
	get child nodes of given node by object type @access public More...
	insertNodeFromTrash ($a_source_id, $a_target_id, $a_tree_id, $a_pos=IL_LAST_NODE, $a_reset_deleted_date=false)
	Insert node from trash deletes trash entry. More...
	insertNode ($a_node_id, $a_parent_id, $a_pos=IL_LAST_NODE, $a_reset_deletion_date=false)
	insert new node with node_id under parent node with parent_id @access public More...
	getFilteredSubTree ($a_node_id, $a_filter=array())
	get filtered subtree More...
	getSubTreeIds ($a_ref_id)
	Get all ids of subnodes. More...
	getSubTree ($a_node, $a_with_data=true, $a_type="")
	get all nodes in the subtree under specified node More...
	getSubTreeTypes ($a_node, $a_filter=0)
	get types of nodes in the subtree under specified node More...
	deleteTree ($a_node)
	delete node and the whole subtree under this node @access public More...
	validateParentRelations ()
	Validate parent relations of tree. More...
	getPathFull ($a_endnode_id, $a_startnode_id=0)
	get path from a given startnode to a given endnode if startnode is not given the rootnode is startnode. More...
	preloadDepthParent ($a_node_ids)
	Preload depth/parent. More...
	getPathId ($a_endnode_id, $a_startnode_id=0)
	get path from a given startnode to a given endnode if startnode is not given the rootnode is startnode @access public More...
	getNodePathForTitlePath ($titlePath, $a_startnode_id=null)
	Converts a path consisting of object titles into a path consisting of tree nodes. More...
	getNodePath ($a_endnode_id, $a_startnode_id=0)
	Returns the node path for the specified object reference. More...
	checkTree ()
	check consistence of tree all left & right values are checked if they are exists only once @access public More...
	checkTreeChilds ($a_no_zero_child=true)
	check, if all childs of tree nodes exist in object table More...
	getMaximumDepth ()
	Return the current maximum depth in the tree @access public. More...
	getDepth ($a_node_id)
	return depth of a node in tree @access private More...
	getNodeTreeData ($a_node_id)
	return all columns of tabel tree More...
	getNodeData ($a_node_id, $a_tree_pk=null)
	get all information of a node. More...
	fetchNodeData ($a_row)
	get data of parent node from tree and object_data @access private More...
	isInTree ($a_node_id)
	get all information of a node. More...
	getParentNodeData ($a_node_id)
	get data of parent node from tree and object_data @access public More...
	isGrandChild ($a_startnode_id, $a_querynode_id)
	checks if a node is in the path of an other node @access public More...
	addTree ($a_tree_id, $a_node_id=-1)
	create a new tree to do: ??? More...
	getNodeDataByType ($a_type)
	get nodes by type More...
	removeTree ($a_tree_id)
	remove an existing tree More...
	moveToTrash ($a_node_id, $a_set_deleted=false)
	Wrapper for saveSubTree. More...
	saveSubTree ($a_node_id, $a_set_deleted=false)
	Use the wrapper moveToTrash save subtree: delete a subtree (defined by node_id) to a new tree with $this->tree_id -node_id. More...
	isDeleted ($a_node_id)
	This is a wrapper for isSaved() with a more useful name. More...
	isSaved ($a_node_id)
	Use method isDeleted check if node is saved. More...
	preloadDeleted ($a_node_ids)
	Preload deleted information. More...
	getSavedNodeData ($a_parent_id)
	get data saved/deleted nodes More...
	getSavedNodeObjIds (array $a_obj_ids)
	get object id of saved/deleted nodes More...
	getParentId ($a_node_id)
	get parent id of given node @access public More...
	getLeftValue ($a_node_id)
	get left value of given node @access public More...
	getChildSequenceNumber ($a_node, $type="")
	get sequence number of node in sibling sequence @access public More...
	readRootId ()
	read root id from database More...
	getRootId ()
	get the root id of tree @access public More...
	setRootId ($a_root_id)
	getTreeId ()
	get tree id @access public More...
	setTreeId ($a_tree_id)
	set tree id @access public More...
	fetchSuccessorNode ($a_node_id, $a_type="")
	get node data of successor node More...
	fetchPredecessorNode ($a_node_id, $a_type="")
	get node data of predecessor node More...
	renumber ($node_id=1, $i=1)
	Wrapper for renumber. More...
	__renumber ($node_id=1, $i=1)
	This method is private. More...
	checkForParentType ($a_ref_id, $a_type, $a_exclude_source_check=false)
	Check for parent type e.g check if a folder (ref_id 3) is in a parent course obj => checkForParentType(3,'crs');. More...
	__isMainTree ()
	Check if operations are done on main tree. More...
	__checkDelete ($a_node)
	Check for deleteTree() compares a subtree of a given node by checking lft, rgt against parent relation. More...
	__getSubTreeByParentRelation ($a_node_id, &$parent_childs)
	@global type $ilDB More...
	__validateSubtrees (&$lft_childs, $parent_childs)
	moveTree ($a_source_id, $a_target_id, $a_location=self::POS_LAST_NODE)
	Move Tree Implementation. More...
	getRbacSubtreeInfo ($a_endnode_id)
	This method is used for change existing objects and returns all necessary information for this action. More...
	getSubTreeQuery ($a_node_id, $a_fields=array(), $a_types='', $a_force_join_reference=false)
	Get tree subtree query. More...
	getSubTreeFilteredByObjIds ($a_node_id, array $a_obj_ids, array $a_fields=array())
	get all node ids in the subtree under specified node id, filter by object ids More...
	deleteNode ($a_tree_id, $a_node_id)
	lookupTrashedObjectTypes ()
	Lookup object types in trash @global type $ilDB. More...

Static Public Member Functions
static	_removeEntry ($a_tree, $a_child, $a_db_table="tree")
	STATIC METHOD Removes a single entry from a tree. More...

Data Fields
const	POS_LAST_NODE = -2
const	POS_FIRST_NODE = -1
const	RELATION_CHILD = 1
const	RELATION_PARENT = 2
const	RELATION_SIBLING = 3
const	RELATION_EQUALS = 4
const	RELATION_NONE = 5
	$ilias
	$log
	$root_id
	$tree_id
	$table_tree
	$table_obj_data
	$table_obj_reference
	$ref_pk
	$obj_pk
	$tree_pk
	$gap

Protected Member Functions
	fetchTranslationFromObjectDataCache ($a_obj_ids)
	Get translation data from object cache (trigger in object cache on preload) More...

Protected Attributes
	$depth_cache = array()
	$parent_cache = array()
	$in_tree_cache = array()

Private Attributes
	$tree_impl = NULL

Detailed Description

Tree class data representation in hierachical trees using the Nested Set Model with Gaps by Joe Celco.

Author

Sascha Hofmann sasch.nosp@m.ahof.nosp@m.mann@.nosp@m.gmx..nosp@m.de

Stefan Meyer meyer.nosp@m.@lei.nosp@m.fos.c.nosp@m.om

Version

$Id$

Definition at line 24 of file class.ilTree.php.

Constructor & Destructor Documentation

__construct()

ilTree::__construct	(		$a_tree_id,
			$a_root_id = 0
	)

Constructor @access public.

Parameters

integer	$a_tree_id	tree_id
integer	$a_root_id	root_id (optional)

Exceptions

InvalidArgumentException

Reimplemented in ilWorkspaceTree.

Definition at line 148 of file class.ilTree.php.

        {
                global $ilDB;
 
                // set db
                $this->ilDB = $ilDB;
 
                $this->lang_code = "en";
 
                // CREATE LOGGER INSTANCE
                $this->log = ilLoggerFactory::getLogger('tree');
 
                if (!isset($a_tree_id) or (func_num_args() == 0) )
                {
                        $this->log->error("No tree_id given!");
                        $this->log->logStack(ilLogLevel::DEBUG);
                        throw new InvalidArgumentException("No tree_id given!");
                }
 
                if (func_num_args() > 2)
                {
                        $this->log->error("Wrong parameter count!");
                        throw new InvalidArgumentException("Wrong parameter count!");
                }
 
                //init variables
                if (empty($a_root_id))
                {
                        $a_root_id = ROOT_FOLDER_ID;
                }
 
                $this->tree_id            = $a_tree_id;
                $this->root_id            = $a_root_id;
                $this->table_tree     = 'tree';
                $this->table_obj_data = 'object_data';
                $this->table_obj_reference = 'object_reference';
                $this->ref_pk = 'ref_id';
                $this->obj_pk = 'obj_id';
                $this->tree_pk = 'tree';
 
                $this->use_cache = true;
 
                // If cache is activated, cache object translations to improve performance
                $this->translation_cache = array();
                $this->parent_type_cache = array();
 
                // By default, we create gaps in the tree sequence numbering for 50 nodes
                $this->gap = 50;
                
                
                // init tree implementation 
                $this->initTreeImplementation();
        }

References $ilDB, ilLogLevel\DEBUG, ilLoggerFactory\getLogger(), and initTreeImplementation().

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Member Function Documentation

__checkDelete()

ilTree::__checkDelete

(

$a_node

)

Check for deleteTree() compares a subtree of a given node by checking lft, rgt against parent relation.

@access private

Parameters

array

node data from ilTree::getNodeData()

Returns

boolean

Exceptions

ilInvalidTreeStructureException

Deprecated:

since 4.4.0

Definition at line 2594 of file class.ilTree.php.

        {
                global $ilDB;
                
                
                $query = $this->getTreeImplementation()->getSubTreeQuery($a_node, array(),false);
                $this->log->debug($query);
                $res = $ilDB->query($query);
                
                $counter = (int) $lft_childs = array();
                while($row = $ilDB->fetchObject($res))
                {
                        $lft_childs[$row->child] = $row->parent;
                        ++$counter;
                }
 
                // CHECK FOR DUPLICATE CHILD IDS
                if($counter != count($lft_childs))
                {
                        $message = 'Duplicate entries for "child" in maintree! $a_node_id: '.$a_node['child'];
 
                        $this->log->error($message);
                        throw new ilInvalidTreeStructureException($message);
                }
 
                // GET SUBTREE BY PARENT RELATION
                $parent_childs = array();
                $this->__getSubTreeByParentRelation($a_node['child'],$parent_childs);
                $this->__validateSubtrees($lft_childs,$parent_childs);
 
                return true;
        }

References $counter, $ilDB, $query, $res, $row, __getSubTreeByParentRelation(), __validateSubtrees(), and getTreeImplementation().

Referenced by deleteTree().

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__getSubTreeByParentRelation()

ilTree::__getSubTreeByParentRelation	(		$a_node_id,
		&	$parent_childs
	)

@global type $ilDB

Parameters

type	$a_node_id
type	$parent_childs

Returns

boolean

Exceptions

ilInvalidTreeStructureException

Deprecated:

since 4.4.0

Definition at line 2636 of file class.ilTree.php.

        {
                global $ilDB;
                
                // GET PARENT ID
                $query = 'SELECT * FROM '.$this->table_tree.' '.
                        'WHERE child = %s '.
                        'AND tree = %s ';
                $res = $ilDB->queryF($query,array('integer','integer'),array(
                        $a_node_id,
                        $this->tree_id));
 
                $counter = 0;
                while($row = $ilDB->fetchObject($res))
                {
                        $parent_childs[$a_node_id] = $row->parent;
                        ++$counter;
                }
                // MULTIPLE ENTRIES
                if($counter > 1)
                {
                        $message = 'Multiple entries in maintree! $a_node_id: '. $a_node_id;
 
                        $this->log->error($message);
                        throw new ilInvalidTreeStructureException($message);
                }
 
                // GET ALL CHILDS
                $query = 'SELECT * FROM '.$this->table_tree.' '.
                        'WHERE parent = %s ';
                $res = $ilDB->queryF($query,array('integer'),array($a_node_id));
 
                while($row = $ilDB->fetchObject($res))
                {
                        // RECURSION
                        $this->__getSubTreeByParentRelation($row->child,$parent_childs);
                }
                return true;
        }

References $counter, $ilDB, $query, $res, $row, and __getSubTreeByParentRelation().

Referenced by __checkDelete(), and __getSubTreeByParentRelation().

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__isMainTree()

ilTree::__isMainTree

(

)

Check if operations are done on main tree.

@access private

Returns

boolean

Definition at line 2578 of file class.ilTree.php.

        {
                return $this->table_tree === 'tree';
        }

Referenced by addTree(), checkForParentType(), deleteTree(), getChilds(), getNodeData(), getPathFull(), getPathId(), getSubTree(), initTreeImplementation(), insertNode(), insertNodeFromTrash(), isCacheUsed(), isInTree(), isSaved(), moveTree(), preloadDeleted(), preloadDepthParent(), removeTree(), and renumber().

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__renumber()

ilTree::__renumber	(		$node_id = 1,
			$i = 1
	)

This method is private.

Always call ilTree->renumber() since it locks the tree table renumber left/right values and close the gaps in numbers (recursive) @access private

Parameters

integer	node_id where to start (usually the root node)
integer	first left value of start node (usually 1)

Returns

integer current left value of recursive call

Definition at line 2438 of file class.ilTree.php.

        {
                global $ilDB;
                
                $query = 'UPDATE '.$this->table_tree.' SET lft = %s WHERE child = %s AND tree = %s';
                $res = $ilDB->manipulateF($query,array('integer','integer','integer'),array(
                        $i,
                        $node_id,
                        $this->tree_id));
 
                // to much dependencies
                //$childs = $this->getChilds($node_id);
                $childs = $this->getChildIds($node_id);
 
                foreach ($childs as $child)
                {
                        $i = $this->__renumber($child,$i+1);
                }
                $i++;
                
                // Insert a gap at the end of node, if the node has children
                if (count($childs) > 0)
                {
                        $i += $this->gap * 2;
                }
                
                
                $query = 'UPDATE '.$this->table_tree.' SET rgt = %s WHERE child = %s AND tree = %s';
                $res = $ilDB->manipulateF($query,array('integer','integer', 'integer'),array(
                        $i,
                        $node_id,
                        $this->tree_id));
                return $i;
        }

References $ilDB, $query, $res, __renumber(), and getChildIds().

Referenced by __renumber(), and renumber().

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__validateSubtrees()

ilTree::__validateSubtrees	(	&	$lft_childs,
			$parent_childs
	)

Parameters

$lft_childs
$parent_childs

Returns

bool

Exceptions

ilInvalidTreeStructureException

Deprecated:

since 4.4.0

Definition at line 2683 of file class.ilTree.php.

        {
                // SORT BY KEY
                ksort($lft_childs);
                ksort($parent_childs);
 
                $this->log->debug('left childs '. print_r($lft_childs,true));
                $this->log->debug('parent childs '. print_r($parent_childs,true));
 
                if(count($lft_childs) != count($parent_childs))
                {
                        $message = '(COUNT) Tree is corrupted! Left/Right subtree does not comply with parent relation';
                        $this->log->error($message);
                        throw new ilInvalidTreeStructureException($message);
                }
                
 
                foreach($lft_childs as $key => $value)
                {
                        if($parent_childs[$key] != $value)
                        {
                                $message = '(COMPARE) Tree is corrupted! Left/Right subtree does not comply with parent relation';
                                $this->log->error($message);
                                throw new ilInvalidTreeStructureException($message);
                        }
                        if($key == ROOT_FOLDER_ID)
                        {
                                $message = '(ROOT_FOLDER) Tree is corrupted! Tried to delete root folder';
                                $this->log->error($message);
                                throw new ilInvalidTreeStructureException($message);
                        }
                }
                return true;
        }

Referenced by __checkDelete().

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_removeEntry()

static ilTree::_removeEntry (   $a_tree,   $a_child,   $a_db_table = "tree"  )

static

STATIC METHOD Removes a single entry from a tree.

The tree structure is NOT updated!

@access public

Parameters

integer	tree id
integer	child id
string	db_table name. default is 'tree' (optional)

Exceptions

InvalidArgumentException

Definition at line 2547 of file class.ilTree.php.

        {
                global $ilDB;
 
                if($a_db_table === 'tree')
                {
                        if($a_tree == 1 and $a_child == ROOT_FOLDER_ID)
                        {
                                $message = sprintf('Tried to delete root node! $a_tree: %s $a_child: %s',
                                                                   $a_tree,
                                                                   $a_child);
                                ilLoggerFactory::getLogger('tree')->error($message);
                                throw new InvalidArgumentException($message);
                        }
                }
                
                $query = 'DELETE FROM '.$a_db_table.' '.
                        'WHERE tree = %s '.
                        'AND child = %s ';
                $res = $ilDB->manipulateF($query,array('integer','integer'),array(
                        $a_tree,
                        $a_child));
                
        }

References $ilDB, $query, $res, ilLoggerFactory\getLogger(), and sprintf.

Referenced by ilValidator\purgeObjects(), and ilSystemCheckTrash\removeSelectedFromSystem().

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addTree()

ilTree::addTree	(		$a_tree_id,
			$a_node_id = -1
	)

create a new tree to do: ???

Parameters

integer	a_tree_id: obj_id of object where tree belongs to
integer	a_node_id: root node of tree (optional; default is tree_id itself)

Returns

boolean true on success

Exceptions

InvalidArgumentException

@access public

Definition at line 1788 of file class.ilTree.php.

        {
                global $ilDB;
 
                // FOR SECURITY addTree() IS NOT ALLOWED ON MAIN TREE
                if($this->__isMainTree())
                {
                        $message = sprintf('Operation not allowed on main tree! $a_tree_if: %s $a_node_id: %s',
                                                           $a_tree_id,
                                                           $a_node_id);
                        $this->log->error($message);
                        throw new InvalidArgumentException($message);
                }
 
                if (!isset($a_tree_id))
                {
                        $message  = "No tree_id given!";
                        $this->log->error($message);
                        throw new InvalidArgumentException($message);
                }
 
                if ($a_node_id <= 0)
                {
                        $a_node_id = $a_tree_id;
                }
 
                $query = 'INSERT INTO '.$this->table_tree.' ('.
                        $this->tree_pk.', child,parent,lft,rgt,depth) '.
                        'VALUES '.
                        '(%s,%s,%s,%s,%s,%s)';
                $res = $ilDB->manipulateF($query,array('integer','integer','integer','integer','integer','integer'),array(
                        $a_tree_id,
                        $a_node_id,
                        0,
                        1,
                        2,
                        1));
 
                return true;
        }

References $ilDB, $query, $res, __isMainTree(), and sprintf.

Referenced by ilWorkspaceExplorer\__construct(), and ilWorkspaceTree\createTreeForUser().

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buildJoin()

ilTree::buildJoin

(

)

build join depending on table settings @access private

Returns

string

Definition at line 458 of file class.ilTree.php.

        {
                if ($this->table_obj_reference)
                {
                        // Use inner join instead of left join to improve performance
                        return "JOIN ".$this->table_obj_reference." ON ".$this->table_tree.".child=".$this->table_obj_reference.".".$this->ref_pk." ".
                                   "JOIN ".$this->table_obj_data." ON ".$this->table_obj_reference.".".$this->obj_pk."=".$this->table_obj_data.".".$this->obj_pk." ";
                }
                else
                {
                        // Use inner join instead of left join to improve performance
                        return "JOIN ".$this->table_obj_data." ON ".$this->table_tree.".child=".$this->table_obj_data.".".$this->obj_pk." ";
                }
        }

Referenced by fetchPredecessorNode(), fetchSuccessorNode(), getChildsByTypeFilter(), getChildSequenceNumber(), getNodeData(), getNodeDataByType(), getPathFull(), getSavedNodeData(), and getSavedNodeObjIds().

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checkForParentType()

ilTree::checkForParentType	(		$a_ref_id,
			$a_type,
			$a_exclude_source_check = false
	)

Check for parent type e.g check if a folder (ref_id 3) is in a parent course obj => checkForParentType(3,'crs');.

@access public

Parameters

integer	ref_id
string	type

Returns

mixed false if item is not in tree, int (object ref_id) > 0 if path container course, int 0 if pathc does not contain the object type

Definition at line 2484 of file class.ilTree.php.

        {                               
                // #12577
                $cache_key = $a_ref_id.'.'.$a_type.'.'.((int)$a_exclude_source_check);
                
                // Try to return a cached result
                if($this->isCacheUsed() &&
                        array_key_exists($cache_key, $this->parent_type_cache)) 
                {                       
                        return $this->parent_type_cache[$cache_key];
                }
                
                // Store up to 1000 results in cache
                $do_cache = ($this->__isMainTree() && count($this->parent_type_cache) < 1000);
 
                // ref_id is not in tree
                if(!$this->isInTree($a_ref_id))
                {
            if($do_cache) 
                        {
                $this->parent_type_cache[$cache_key] = false;
            }
                        return false;
                }
                
                $path = array_reverse($this->getPathFull($a_ref_id));
 
                // remove first path entry as it is requested node
                if($a_exclude_source_check)
                {
                        array_shift($path);
                }
 
                foreach($path as $node)
                {
                        // found matching parent
                        if($node["type"] == $a_type)
                        {
                                if($do_cache) 
                                {
                                        $this->parent_type_cache[$cache_key] = $node["child"];
                                }
                                return $node["child"];
                        }
                }
                
                if($do_cache)
                {
                        $this->parent_type_cache[$cache_key] = false;
                }
                return 0;
        }

References $a_type, $path, __isMainTree(), getPathFull(), isCacheUsed(), and isInTree().

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checkTree()

ilTree::checkTree

(

)

check consistence of tree all left & right values are checked if they are exists only once @access public

Returns

boolean true if tree is ok; otherwise throws error object

Exceptions

ilInvalidTreeStructureException

Definition at line 1317 of file class.ilTree.php.

        {
                global $ilDB;
                
                $types = array('integer');
                $query = 'SELECT lft,rgt FROM '.$this->table_tree.' '.
                        'WHERE '.$this->tree_pk.' = %s ';
                
                $res = $ilDB->queryF($query,$types,array($this->tree_id));
                while ($row = $ilDB->fetchObject($res))
                {
                        $lft[] = $row->lft;
                        $rgt[] = $row->rgt;
                }
 
                $all = array_merge($lft,$rgt);
                $uni = array_unique($all);
 
                if (count($all) != count($uni))
                {
                        $message = 'Tree is corrupted!';
 
                        $this->log->error($message);
                        throw new ilInvalidTreeStructureException($message);
                }
 
                return true;
        }

References $ilDB, $query, $res, and $row.

checkTreeChilds()

ilTree::checkTreeChilds

(

$a_no_zero_child = true

)

check, if all childs of tree nodes exist in object table

Parameters

bool

$a_no_zero_child

Returns

bool

Exceptions

ilInvalidTreeStructureException

Definition at line 1353 of file class.ilTree.php.

        {
                global $ilDB;
                
                $query = 'SELECT * FROM '.$this->table_tree.' '.
                                'WHERE '.$this->tree_pk.' = %s '.
                                'ORDER BY lft';
                $r1 = $ilDB->queryF($query,array('integer'),array($this->tree_id));
                
                while ($row = $ilDB->fetchAssoc($r1))
                {
//echo "tree:".$row[$this->tree_pk].":lft:".$row["lft"].":rgt:".$row["rgt"].":child:".$row["child"].":<br>";
                        if (($row["child"] == 0) && $a_no_zero_child)
                        {
                                $message = "Tree contains child with ID 0!";
                                $this->log->error($message);
                                throw new ilInvalidTreeStructureException($message);
                        }
 
                        if ($this->table_obj_reference)
                        {
                                // get object reference data
                                $query = 'SELECT * FROM '.$this->table_obj_reference.' WHERE '.$this->ref_pk.' = %s ';
                                $r2 = $ilDB->queryF($query,array('integer'),array($row['child']));
                                
//echo "num_childs:".$r2->numRows().":<br>";
                                if ($r2->numRows() == 0)
                                {
                                        $message = "No Object-to-Reference entry found for ID ". $row["child"]."!";
                                        $this->log->error($message);
                                        throw new ilInvalidTreeStructureException($message);
                                }
                                if ($r2->numRows() > 1)
                                {
                                        $message = "More Object-to-Reference entries found for ID ". $row["child"]."!";
                                        $this->log->error($message);
                                        throw new ilInvalidTreeStructureException($message);
                                }
 
                                // get object data
                                $obj_ref = $ilDB->fetchAssoc($r2);
 
                                $query = 'SELECT * FROM '.$this->table_obj_data.' WHERE '.$this->obj_pk.' = %s';
                                $r3 = $ilDB->queryF($query,array('integer'),array($obj_ref[$this->obj_pk]));
                                if ($r3->numRows() == 0)
                                {
                                        $message = " No child found for ID ". $obj_ref[$this->obj_pk]."!";
                                        $this->log->error($message);
                                        throw new ilInvalidTreeStructureException($message);
                                }
                                if ($r3->numRows() > 1)
                                {
                                        $message = "More childs found for ID ". $obj_ref[$this->obj_pk]."!";
                                        $this->log->error($message);
                                        throw new ilInvalidTreeStructureException($message);
                                }
 
                        }
                        else
                        {
                                // get only object data
                                $query = 'SELECT * FROM '.$this->table_obj_data.' WHERE '.$this->obj_pk.' = %s';
                                $r2 = $ilDB->queryF($query,array('integer'),array($row['child']));
//echo "num_childs:".$r2->numRows().":<br>";
                                if ($r2->numRows() == 0)
                                {
                                        $message = "No child found for ID ". $row["child"]."!";
                                        $this->log->error($message);
                                        throw new ilInvalidTreeStructureException($message);
                                }
                                if ($r2->numRows() > 1)
                                {
                                        $message = "More childs found for ID ". $row["child"]."!";
                                        $this->log->error($message);
                                        throw new ilInvalidTreeStructureException($message);
                                }
                        }
                }
 
                return true;
        }

References $ilDB, $obj_pk, $query, and $row.

deleteNode()

ilTree::deleteNode	(		$a_tree_id,
			$a_node_id
	)

Definition at line 2821 of file class.ilTree.php.

        {
                global $ilDB, $ilAppEventHandler;
                
                $query = 'DELETE FROM tree where '.
                                'child = '.$ilDB->quote($a_node_id,'integer').' '.
                                'AND tree = '.$ilDB->quote($a_tree_id,'integer');
                $ilDB->manipulate($query);
 
                $ilAppEventHandler->raise(
                                        "Services/Tree",
                                        "deleteNode",
                                        array('tree' => $this->table_tree,
                                                  'node_id' => $a_node_id,
                                                  'tree_id' => $a_tree_id
                                        )
                                );
        }

References $ilDB, and $query.

deleteTree()

ilTree::deleteTree

(

$a_node

)

delete node and the whole subtree under this node @access public

Parameters

array

node_data of a node

Exceptions

InvalidArgumentException
ilInvalidTreeStructureException

Definition at line 976 of file class.ilTree.php.

        {
                global $ilDB;
 
                $this->log->debug('Delete tree with node '. $a_node);
                
                if (!is_array($a_node))
                {
                        $this->log->logStack(ilLogLevel::ERROR);
                        throw new InvalidArgumentException(__METHOD__.': Wrong datatype for node data!');
                }
                
                $this->log->debug($this->tree_pk);
                
                if($this->__isMainTree() )
                {
                        // @todo normally this part is not executed, since the subtree is first 
                        // moved to trash and then deleted.
                        if(!$this->__checkDelete($a_node))
                        {
                                $this->log->logStack(ilLogLevel::ERROR);
                                throw new ilInvalidTreeStructureException('Deletion canceled due to invalid tree structure.' . print_r($a_node,true));
                        }
                }
 
                $this->getTreeImplementation()->deleteTree($a_node['child']);
                
                $this->resetInTreeCache();
        }

References $ilDB, __checkDelete(), __isMainTree(), ilLogLevel\ERROR, getTreeImplementation(), and resetInTreeCache().

Referenced by ilWorkspaceTree\cascadingDelete().

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fetchNodeData()

ilTree::fetchNodeData

(

$a_row

)

get data of parent node from tree and object_data @access private

Parameters

object

db db result object containing node_data

Returns

array 2-dim (int/str) node_data TODO: select description twice for compability. Please use 'desc' in future only

Definition at line 1558 of file class.ilTree.php.

        {
                global $objDefinition, $lng, $ilBench,$ilDB;
 
                //$ilBench->start("Tree", "fetchNodeData_getRow");
                $data = $a_row;
                $data["desc"] = $a_row["description"];  // for compability
                //$ilBench->stop("Tree", "fetchNodeData_getRow");
 
                // multilingual support systemobjects (sys) & categories (db)
                //$ilBench->start("Tree", "fetchNodeData_readDefinition");
                if (is_object($objDefinition))
                {
                        $translation_type = $objDefinition->getTranslationType($data["type"]);
                }
                //$ilBench->stop("Tree", "fetchNodeData_readDefinition");
 
                if ($translation_type == "sys")
                {
                        //$ilBench->start("Tree", "fetchNodeData_getLangData");
                        if ($data["type"] == "rolf" and $data["obj_id"] != ROLE_FOLDER_ID)
                        {
                                $data["description"] = $lng->txt("obj_".$data["type"]."_local_desc").$data["title"].$data["desc"];
                                $data["desc"] = $lng->txt("obj_".$data["type"]."_local_desc").$data["title"].$data["desc"];
                                $data["title"] = $lng->txt("obj_".$data["type"]."_local");
                        }
                        else
                        {
                                $data["title"] = $lng->txt("obj_".$data["type"]);
                                $data["description"] = $lng->txt("obj_".$data["type"]."_desc");
                                $data["desc"] = $lng->txt("obj_".$data["type"]."_desc");
                        }
                        //$ilBench->stop("Tree", "fetchNodeData_getLangData");
                }
                elseif ($translation_type == "db")
                {
 
                        // Try to retrieve object translation from cache
                        if ($this->isCacheUsed() &&
                                array_key_exists($data["obj_id"].'.'.$lang_code, $this->translation_cache)) {
 
                                $key = $data["obj_id"].'.'.$lang_code;
                                $data["title"] = $this->translation_cache[$key]['title'];
                                $data["description"] = $this->translation_cache[$key]['description'];
                                $data["desc"] = $this->translation_cache[$key]['desc'];
                        } 
                        else 
                        {
                                // Object translation is not in cache, read it from database
                                //$ilBench->start("Tree", "fetchNodeData_getTranslation");
                                $query = 'SELECT title,description FROM object_translation '.
                                        'WHERE obj_id = %s '.
                                        'AND lang_code = %s '.
                                        'AND NOT lang_default = %s';
 
                                $res = $ilDB->queryF($query,array('integer','text','integer'),array(
                                        $data['obj_id'],
                                        $this->lang_code,
                                        1));
                                $row = $ilDB->fetchObject($res);
 
                                if ($row)
                                {
                                        $data["title"] = $row->title;
                                        $data["description"] = ilUtil::shortenText($row->description,ilObject::DESC_LENGTH,true);
                                        $data["desc"] = $row->description;
                                }
                                //$ilBench->stop("Tree", "fetchNodeData_getTranslation");
 
                                // Store up to 1000 object translations in cache
                                if ($this->isCacheUsed() && count($this->translation_cache) < 1000)
                                {
                                        $key = $data["obj_id"].'.'.$lang_code;
                                        $this->translation_cache[$key] = array();
                                        $this->translation_cache[$key]['title'] = $data["title"] ;
                                        $this->translation_cache[$key]['description'] = $data["description"];
                                        $this->translation_cache[$key]['desc'] = $data["desc"];
                                }
                        }
                }
 
                // TODO: Handle this switch by module.xml definitions
                if($data['type'] == 'crsr' or $data['type'] == 'catr' or $data['type'] == 'grpr')
                {
                        include_once('./Services/ContainerReference/classes/class.ilContainerReference.php');
                        $data['title'] = ilContainerReference::_lookupTitle($data['obj_id']);
                }
 
                return $data ? $data : array();
        }

References $data, $ilBench, $ilDB, $lng, $query, $res, $row, ilContainerReference\_lookupTitle(), ilObject\DESC_LENGTH, isCacheUsed(), and ilUtil\shortenText().

Referenced by fetchPredecessorNode(), fetchSuccessorNode(), ilSCORMTree\getChilds(), getChilds(), getChildsByType(), getChildsByTypeFilter(), getNodeData(), getNodeDataByType(), getParentNodeData(), getPathFull(), getSavedNodeData(), and getSubTree().

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fetchPredecessorNode()

ilTree::fetchPredecessorNode	(		$a_node_id,
			$a_type = ""
	)

get node data of predecessor node

@access public

Parameters

integer

node id

Returns

array node data array

Exceptions

InvalidArgumentException

Definition at line 2334 of file class.ilTree.php.

        {
                global $ilDB;
                
                if (!isset($a_node_id))
                {
                        $message = "No node_id given!";
                        $this->log->error($message);
                        throw new InvalidArgumentException($message);
                }
 
                // get lft value for current node
                $query = 'SELECT lft FROM '.$this->table_tree.' '.
                        'WHERE '.$this->table_tree.'.child = %s '.
                        'AND '.$this->table_tree.'.'.$this->tree_pk.' = %s ';
                $res = $ilDB->queryF($query,array('integer','integer'),array(
                        $a_node_id,
                        $this->tree_id));
 
                $curr_node = $ilDB->fetchAssoc($res);
                
                if($a_type)
                {
                        $query = 'SELECT * FROM '.$this->table_tree.' '.
                                $this->buildJoin().
                                'WHERE lft < %s '.
                                'AND '.$this->table_obj_data.'.type = %s '.
                                'AND '.$this->table_tree.'.'.$this->tree_pk.' = %s '.
                                'ORDER BY lft DESC';
                        $ilDB->setLimit(1);
                        $res = $ilDB->queryF($query,array('integer','text','integer'),array(
                                $curr_node['lft'],
                                $a_type,
                                $this->tree_id));
                }
                else
                {
                        $query = 'SELECT * FROM '.$this->table_tree.' '.
                                $this->buildJoin().
                                'WHERE lft < %s '.
                                'AND '.$this->table_tree.'.'.$this->tree_pk.' = %s '.
                                'ORDER BY lft DESC';
                        $ilDB->setLimit(1);
                        $res = $ilDB->queryF($query,array('integer','integer'),array(
                                $curr_node['lft'],
                                $this->tree_id));
                }
                
                if ($res->numRows() < 1)
                {
                        return false;
                }
                else
                {
                        $row = $ilDB->fetchAssoc($res);
                        return $this->fetchNodeData($row);
                }
        }

References $a_type, $ilDB, $query, $res, $row, buildJoin(), and fetchNodeData().

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fetchSuccessorNode()

ilTree::fetchSuccessorNode	(		$a_node_id,
			$a_type = ""
	)

get node data of successor node

@access public

Parameters

integer

node id

Returns

array node data array

Exceptions

InvalidArgumentException

Definition at line 2268 of file class.ilTree.php.

        {
                global $ilDB;
                
                if (!isset($a_node_id))
                {
                        $message = "No node_id given!";
                        $this->log->error($message);
                        throw new InvalidArgumentException($message);
                }
 
                // get lft value for current node
                $query = 'SELECT lft FROM '.$this->table_tree.' '.
                        'WHERE '.$this->table_tree.'.child = %s '.
                        'AND '.$this->table_tree.'.'.$this->tree_pk.' = %s ';
                $res = $ilDB->queryF($query,array('integer','integer'),array(
                        $a_node_id,
                        $this->tree_id));
                $curr_node = $ilDB->fetchAssoc($res);
                
                if($a_type)
                {
                        $query = 'SELECT * FROM '.$this->table_tree.' '.
                                $this->buildJoin().
                                'WHERE lft > %s '.
                                'AND '.$this->table_obj_data.'.type = %s '.
                                'AND '.$this->table_tree.'.'.$this->tree_pk.' = %s '.
                                'ORDER BY lft ';
                        $ilDB->setLimit(1);
                        $res = $ilDB->queryF($query,array('integer','text','integer'),array(
                                $curr_node['lft'],
                                $a_type,
                                $this->tree_id));
                }
                else
                {
                        $query = 'SELECT * FROM '.$this->table_tree.' '.
                                $this->buildJoin().
                                'WHERE lft > %s '.
                                'AND '.$this->table_tree.'.'.$this->tree_pk.' = %s '.
                                'ORDER BY lft ';
                        $ilDB->setLimit(1);
                        $res = $ilDB->queryF($query,array('integer','integer'),array(
                                $curr_node['lft'],
                                $this->tree_id));
                }
 
                if ($res->numRows() < 1)
                {
                        return false;
                }
                else
                {
                        $row = $ilDB->fetchAssoc($res);
                        return $this->fetchNodeData($row);
                }
        }

References $a_type, $ilDB, $query, $res, $row, buildJoin(), and fetchNodeData().

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fetchTranslationFromObjectDataCache()

ilTree::fetchTranslationFromObjectDataCache (   $a_obj_ids )

protected

Get translation data from object cache (trigger in object cache on preload)

Parameters

array

$a_obj_ids

object ids

Definition at line 1654 of file class.ilTree.php.

        {
                global $ilObjDataCache;
 
                if ($this->isCacheUsed() && is_array($a_obj_ids) && is_object($ilObjDataCache))
                {
                        foreach ($a_obj_ids as $id)
                        {
                                $this->translation_cache[$id.'.']['title'] = $ilObjDataCache->lookupTitle($id);
                                $this->translation_cache[$id.'.']['description'] = $ilObjDataCache->lookupDescription($id);;
                                $this->translation_cache[$id.'.']['desc'] =
                                        $this->translation_cache[$id.'.']['description'];
                        }
                }
        }

References isCacheUsed().

Referenced by getChilds().

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getChildIds()

ilTree::getChildIds

(

$a_node

)

Get node child ids @global type $ilDB.

Parameters

type

$a_node

Returns

type

Definition at line 503 of file class.ilTree.php.

        {
                global $ilDB;
                
                $query = 'SELECT * FROM '. $this->table_tree . ' ' .
                                'WHERE parent = '.$ilDB->quote($a_node,'integer').' '.
                                'AND tree = '.$ilDB->quote($this->tree_id,'integer' . ' ' .
                                'ORDER BY lft');
                $res = $ilDB->query($query);
                
                $childs = array();
                while($row = $res->fetchRow(ilDBConstants::FETCHMODE_OBJECT))
                {
                        $childs[] = $row->child;
                }
                return $childs;
        }

References $ilDB, $query, $res, $row, and ilDBConstants\FETCHMODE_OBJECT.

Referenced by __renumber().

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getChilds()

ilTree::getChilds	(		$a_node_id,
			$a_order = "",
			$a_direction = "ASC"
	)

get child nodes of given node @access public

Parameters

integer	node_id
string	sort order of returned childs, optional (possible values: 'title','desc','last_update' or 'type')
string	sort direction, optional (possible values: 'DESC' or 'ASC'; defalut is 'ASC')

Returns

array with node data of all childs or empty array

Exceptions

InvalidArgumentException

Reimplemented in ilSCORMTree.

Definition at line 530 of file class.ilTree.php.

        {
                global $ilBench,$ilDB, $ilObjDataCache, $ilUser;
                
                if (!isset($a_node_id))
                {
                        $message = "No node_id given!";
                        $this->log->error($message);
                        throw new InvalidArgumentException($message);
                }
 
                // init childs
                $childs = array();
 
                // number of childs
                $count = 0;
 
                // init order_clause
                $order_clause = "";
 
                // set order_clause if sort order parameter is given
                if (!empty($a_order))
                {
                        $order_clause = "ORDER BY ".$a_order." ".$a_direction;
                }
                else
                {
                        $order_clause = "ORDER BY ".$this->table_tree.".lft";
                }
 
                         
                $query = sprintf('SELECT * FROM '.$this->table_tree.' '.
                                $this->buildJoin().
                                "WHERE parent = %s " .
                                "AND ".$this->table_tree.".".$this->tree_pk." = %s ".
                                $order_clause,
                                $ilDB->quote($a_node_id,'integer'),
                                $ilDB->quote($this->tree_id,'integer'));
 
                $res = $ilDB->query($query);
                
                if(!$count = $res->numRows())
                {
                        return array();
                }
 
                // get rows and object ids
                $rows = array();
                while($r = $ilDB->fetchAssoc($res))
                {
                        $rows[] = $r;
                        $obj_ids[] = $r["obj_id"];
                }
 
                // preload object translation information
                if ($this->__isMainTree() && $this->isCacheUsed() && is_object($ilObjDataCache) &&
                        is_object($ilUser) && $this->lang_code == $ilUser->getLanguage() && !$this->oc_preloaded[$a_node_id])
                {
//                      $ilObjDataCache->preloadTranslations($obj_ids, $this->lang_code);
                        $ilObjDataCache->preloadObjectCache($obj_ids, $this->lang_code);
                        $this->fetchTranslationFromObjectDataCache($obj_ids);
                        $this->oc_preloaded[$a_node_id] = true;
                }
 
                foreach ($rows as $row)
                {
                        $childs[] = $this->fetchNodeData($row);
 
                        // Update cache of main tree
                        if ($this->__isMainTree())
                        {
                                #$GLOBALS['ilLog']->write(__METHOD__.': Storing in tree cache '.$row['child'].' = true');
                                $this->in_tree_cache[$row['child']] = $row['tree'] == 1;
                        }
                }
                $childs[$count - 1]["last"] = true;
                return $childs;
        }

References $ilBench, $ilDB, $ilUser, $query, $r, $res, $row, __isMainTree(), fetchNodeData(), fetchTranslationFromObjectDataCache(), isCacheUsed(), and sprintf.

Referenced by getFilteredChilds(), and ilSkillTree\getMaxOrderNr().

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getChildsByType()

ilTree::getChildsByType	(		$a_node_id,
			$a_type
	)

get child nodes of given node by object type @access public

Parameters

integer	node_id
string	object type

Returns

array with node data of all childs or empty array

Exceptions

InvalidArgumentException

Definition at line 641 of file class.ilTree.php.

        {
                global $ilDB;
                
                if (!isset($a_node_id) or !isset($a_type))
                {
                        $message = "Missing parameter! node_id:".$a_node_id." type:".$a_type;
                        $this->log->error($message);
                        throw new InvalidArgumentException($message);
                }
 
        if ($a_type=='rolf' && $this->table_obj_reference) {
            // Performance optimization: A node can only have exactly one
            // role folder as its child. Therefore we don't need to sort the
            // results, and we can let the database know about the expected limit.
            $ilDB->setLimit(1,0);
            $query = sprintf("SELECT * FROM ".$this->table_tree." ".
                $this->buildJoin().
                "WHERE parent = %s ".
                "AND ".$this->table_tree.".".$this->tree_pk." = %s ".
                "AND ".$this->table_obj_data.".type = %s ",
                $ilDB->quote($a_node_id,'integer'),
                $ilDB->quote($this->tree_id,'integer'),
                $ilDB->quote($a_type,'text'));
        } else {
            $query = sprintf("SELECT * FROM ".$this->table_tree." ".
                $this->buildJoin().
                "WHERE parent = %s ".
                "AND ".$this->table_tree.".".$this->tree_pk." = %s ".
                "AND ".$this->table_obj_data.".type = %s ".
                "ORDER BY ".$this->table_tree.".lft",
                $ilDB->quote($a_node_id,'integer'),
                $ilDB->quote($this->tree_id,'integer'),
                $ilDB->quote($a_type,'text'));
        }
                $res = $ilDB->query($query);
                
                // init childs
                $childs = array();
                while($row = $ilDB->fetchAssoc($res))
                {
                        $childs[] = $this->fetchNodeData($row);
                }
                
                return $childs ? $childs : array();
        }

References $a_type, $ilDB, $query, $res, $row, fetchNodeData(), and sprintf.

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getChildsByTypeFilter()

ilTree::getChildsByTypeFilter	(		$a_node_id,
			$a_types,
			$a_order = "",
			$a_direction = "ASC"
	)

get child nodes of given node by object type @access public

Parameters

integer	node_id
array	array of object type

Returns

array with node data of all childs or empty array

Exceptions

InvalidArgumentException

Definition at line 697 of file class.ilTree.php.

        {
                global $ilDB;
                
                if (!isset($a_node_id) or !$a_types)
                {
                        $message = "Missing parameter! node_id:".$a_node_id." type:".$a_types;
                        $this->log->error($message);
                        throw new InvalidArgumentException($message);
                }
        
                $filter = ' ';
                if($a_types)
                {
                        $filter = 'AND '.$this->table_obj_data.'.type IN('.implode(',',ilUtil::quoteArray($a_types)).') ';
                }
 
                // set order_clause if sort order parameter is given
                if (!empty($a_order))
                {
                        $order_clause = "ORDER BY ".$a_order." ".$a_direction;
                }
                else
                {
                        $order_clause = "ORDER BY ".$this->table_tree.".lft";
                }
                
                $query = 'SELECT * FROM '.$this->table_tree.' '.
                        $this->buildJoin().
                        'WHERE parent = '.$ilDB->quote($a_node_id,'integer').' '.
                        'AND '.$this->table_tree.'.'.$this->tree_pk.' = '.$ilDB->quote($this->tree_id,'integer').' '.
                        $filter.
                        $order_clause;
                
                $res = $ilDB->query($query);
                while($row = $ilDB->fetchAssoc($res))
                {
                        $childs[] = $this->fetchNodeData($row);
                }       
                
                return $childs ? $childs : array();
        }

References $ilDB, $query, $res, $row, buildJoin(), fetchNodeData(), and ilUtil\quoteArray().

Referenced by ilSkillTree\getMaxOrderNr().

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getChildSequenceNumber()

ilTree::getChildSequenceNumber	(		$a_node,
			$type = ""
	)

get sequence number of node in sibling sequence @access public

Parameters

array

node

Returns

integer sequence number

Exceptions

InvalidArgumentException

Definition at line 2161 of file class.ilTree.php.

        {
                global $ilDB;
                
                if (!isset($a_node))
                {
                        $message = "No node_id given!";
                        $this->log->error($message);
                        throw new InvalidArgumentException($message);
                }
                
                if($type)
                {
                        $query = 'SELECT count(*) cnt FROM '.$this->table_tree.' '.
                                $this->buildJoin().
                                'WHERE lft <= %s '.
                                'AND type = %s '.
                                'AND parent = %s '.
                                'AND '.$this->table_tree.'.'.$this->tree_pk.' = %s ';
 
                        $res = $ilDB->queryF($query,array('integer','text','integer','integer'),array(
                                $a_node['lft'],
                                $type,
                                $a_node['parent'],
                                $this->tree_id));
                }
                else
                {
                        $query = 'SELECT count(*) cnt FROM '.$this->table_tree.' '.
                                $this->buildJoin().
                                'WHERE lft <= %s '.
                                'AND parent = %s '.
                                'AND '.$this->table_tree.'.'.$this->tree_pk.' = %s ';
 
                        $res = $ilDB->queryF($query,array('integer','integer','integer'),array(
                                $a_node['lft'],
                                $a_node['parent'],
                                $this->tree_id));
                        
                }
                $row = $ilDB->fetchAssoc($res);
                return $row["cnt"];
        }

References $ilDB, $query, $res, $row, and buildJoin().

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getDepth()

ilTree::getDepth

(

$a_node_id

)

return depth of a node in tree @access private

Parameters

integer

node_id of parent's node_id

Returns

integer depth of node in tree

Definition at line 1457 of file class.ilTree.php.

        {
                global $ilDB;
                
                if ($a_node_id)
                {
                        $query = 'SELECT depth FROM '.$this->table_tree.' '.
                                'WHERE child = %s '.
                                'AND '.$this->tree_pk.' = %s ';
                        $res = $ilDB->queryF($query,array('integer','integer'),array($a_node_id,$this->tree_id));
                        $row = $ilDB->fetchObject($res);
 
                        return $row->depth;
                }
                else
                {
                        return 1;
                }
        }

References $ilDB, $query, $res, and $row.

getDepthCache()

ilTree::getDepthCache

(

)

Get depth cache.

Returns

type

Definition at line 273 of file class.ilTree.php.

        {
                return (array) $this->depth_cache;
        }

References $depth_cache.

getFilteredChilds()

ilTree::getFilteredChilds	(		$a_filter,
			$a_node,
			$a_order = "",
			$a_direction = "ASC"
	)

get child nodes of given node (exclude filtered obj_types) @access public

Parameters

array	objects to filter (e.g array('rolf'))
integer	node_id
string	sort order of returned childs, optional (possible values: 'title','desc','last_update' or 'type')
string	sort direction, optional (possible values: 'DESC' or 'ASC'; defalut is 'ASC')

Returns

array with node data of all childs or empty array

Definition at line 618 of file class.ilTree.php.

        {
                $childs = $this->getChilds($a_node,$a_order,$a_direction);
 
                foreach($childs as $child)
                {
                        if(!in_array($child["type"],$a_filter))
                        {
                                $filtered[] = $child;
                        }
                }
                return $filtered ? $filtered : array();
        }

References getChilds().

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getFilteredSubTree()

ilTree::getFilteredSubTree	(		$a_node_id,
			$a_filter = array()
	)

get filtered subtree

get all subtree nodes beginning at a specific node excluding specific object types and their child nodes.

E.g getFilteredSubTreeNodes()

@access public

Parameters

return

Definition at line 857 of file class.ilTree.php.

        {
                $node = $this->getNodeData($a_node_id);
                
                $first = true;
                $depth = 0;
                foreach($this->getSubTree($node) as $subnode)
                {
                        if($depth and $subnode['depth'] > $depth)
                        {
                                continue;
                        }
                        if(!$first and in_array($subnode['type'],$a_filter))
                        {
                                $depth = $subnode['depth'];
                                $first = false;
                                continue;
                        }
                        $depth = 0;
                        $first = false;
                        $filtered[] = $subnode; 
                }
                return $filtered ? $filtered : array();
        }

References getNodeData(), and getSubTree().

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getGap()

ilTree::getGap

(

)

Get default gap *.

Returns

int

Definition at line 344 of file class.ilTree.php.

        {
                return $this->gap;
        }

References $gap.

getLeftValue()

ilTree::getLeftValue

(

$a_node_id

)

get left value of given node @access public

Parameters

integer

node id

Returns

integer left value

Exceptions

InvalidArgumentException

Definition at line 2133 of file class.ilTree.php.

        {
                global $ilDB;
                
                if (!isset($a_node_id))
                {
                        $message = "No node_id given!";
                        $this->log->error($message);
                        throw new InvalidArgumentException($message);
                }
 
                $query = 'SELECT lft FROM '.$this->table_tree.' '.
                        'WHERE child = %s '.
                        'AND '.$this->tree_pk.' = %s ';
                $res = $ilDB->queryF($query,array('integer','integer'),array(
                        $a_node_id,
                        $this->tree_id));
                $row = $ilDB->fetchObject($res);
                return $row->lft;
        }

References $ilDB, $query, $res, and $row.

getMaximumDepth()

ilTree::getMaximumDepth

(

)

Return the current maximum depth in the tree @access public.

Returns

integer max depth level of tree

Definition at line 1440 of file class.ilTree.php.

        {
                global $ilDB;
                
                $query = 'SELECT MAX(depth) depth FROM '.$this->table_tree;
                $res = $ilDB->query($query);            
                
                $row = $ilDB->fetchAssoc($res);
                return $row['depth'];
        }

References $ilDB, $query, $res, and $row.

getNodeData()

ilTree::getNodeData	(		$a_node_id,
			$a_tree_pk = null
	)

get all information of a node.

get data of a specific node from tree and object_data @access public

Parameters

integer

node id

Returns

array 2-dim (int/str) node_data

Exceptions

InvalidArgumentException

Definition at line 1515 of file class.ilTree.php.

        {
                global $ilDB;
                
                if (!isset($a_node_id))
                {
                        $this->log->logStack(ilLogLevel::ERROR);
                        throw new InvalidArgumentException("No node_id given!");
                }
                if($this->__isMainTree())
                {
                        if($a_node_id < 1)
                        {
                                $message = 'No valid parameter given! $a_node_id: %s'.$a_node_id;
 
                                $this->log->error($message);
                                throw new InvalidArgumentException($message);
                        }
                }
 
                // BEGIN WebDAV: Pass tree id to this method
                $query = 'SELECT * FROM '.$this->table_tree.' '.
                        $this->buildJoin().
                        'WHERE '.$this->table_tree.'.child = %s '.
                        'AND '.$this->table_tree.'.'.$this->tree_pk.' = %s ';
                $res = $ilDB->queryF($query,array('integer','integer'),array(
                        $a_node_id,
                        $a_tree_pk === null ? $this->tree_id : $a_tree_pk));
                // END WebDAV: Pass tree id to this method
                $row = $ilDB->fetchAssoc($res);
                $row[$this->tree_pk] = $this->tree_id;
 
                return $this->fetchNodeData($row);
        }

References $ilDB, $query, $res, $row, $tree_id, $tree_pk, __isMainTree(), buildJoin(), ilLogLevel\ERROR, and fetchNodeData().

Referenced by ilWorkspaceTree\cascadingDelete(), getFilteredSubTree(), ilWorkspaceTree\getObjectsFromType(), getSubTreeFilteredByObjIds(), getSubTreeTypes(), and ilTestTaxonomyTree\initOrderedTreeIndex().

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getNodeDataByType()

ilTree::getNodeDataByType

(

$a_type

)

get nodes by type

Parameters

integer	a_tree_id: obj_id of object where tree belongs to
integer	a_type_id: type of object @access public

Exceptions

InvalidArgumentException

Returns

array

Deprecated:

since 4.4.0

Definition at line 1838 of file class.ilTree.php.

        {
                global $ilDB;
                
                if(!isset($a_type) or (!is_string($a_type)))
                {
                        $this->log->logStack(ilLogLevel::ERROR);
                        throw new InvalidArgumentException('Type not given or wrong datatype');
                }
 
                $query = 'SELECT * FROM ' . $this->table_tree . ' ' .
                        $this->buildJoin().
                        'WHERE ' . $this->table_obj_data . '.type = ' . $this->ilDB->quote($a_type, 'text').
                        'AND ' . $this->table_tree . '.' . $this->tree_pk . ' = ' . $this->ilDB->quote($this->tree_id, 'integer');
 
                $res = $ilDB->query($query);
                $data = array();
                while($row = $ilDB->fetchAssoc($res))
                {
                        $data[] = $this->fetchNodeData($row);
                }
 
                return $data;
        }

References $a_type, $data, $ilDB, $query, $res, $row, buildJoin(), ilLogLevel\ERROR, fetchNodeData(), and ilDB\quote().

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getNodePath()

ilTree::getNodePath	(		$a_endnode_id,
			$a_startnode_id = 0
	)

Returns the node path for the specified object reference.

Note: this function returns the same result as getNodePathForTitlePath, but takes ref-id's as parameters.

This function differs from getPathFull, in the following aspects:

• The title of an object is not translated into the language of the user
• This function is significantly faster than getPathFull.

@access public

Parameters

integer	node_id of endnode
integer	node_id of startnode (optional)

Returns

array ordered path info (depth,parent,child,obj_id,type,title) or null, if the node_id can not be converted into a node path.

Definition at line 1271 of file class.ilTree.php.

        {
                global $ilDB;
 
                $pathIds = $this->getPathId($a_endnode_id, $a_startnode_id);
 
                // Abort if no path ids were found
                if (count($pathIds) == 0)
                {
                        return null;
                }
 
                
                $types = array();
                $data = array();
                for ($i = 0; $i < count($pathIds); $i++)
                {
                        $types[] = 'integer';
                        $data[] = $pathIds[$i];
                }
 
                $query = 'SELECT t.depth,t.parent,t.child,d.obj_id,d.type,d.title '.
                        'FROM '.$this->table_tree.' t '.
                        'JOIN '.$this->table_obj_reference.' r ON r.ref_id = t.child '.
                        'JOIN '.$this->table_obj_data.' d ON d.obj_id = r.obj_id '.
                        'WHERE '.$ilDB->in('t.child',$data,false,'integer').' '.
                        'ORDER BY t.depth ';
                        
                $res = $ilDB->queryF($query,$types,$data);
 
                $titlePath = array();
                while ($row = $ilDB->fetchAssoc($res))
                {
                        $titlePath[] = $row;
                }
                return $titlePath;
        }

References $data, $ilDB, $query, $res, $row, and getPathId().

Referenced by getNodePathForTitlePath().

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getNodePathForTitlePath()

ilTree::getNodePathForTitlePath	(		$titlePath,
			$a_startnode_id = null
	)

Converts a path consisting of object titles into a path consisting of tree nodes.

The comparison is non-case sensitive.

Note: this function returns the same result as getNodePath, but takes a title path as parameter.

@access public

Parameters

Array	Path array with object titles. e.g. array('ILIAS','English','Course A')
ref_id	Startnode of the relative path. Specify null, if the title path is an absolute path. Specify a ref id, if the title path is a relative path starting at this ref id.

Returns

array ordered path info (depth,parent,child,obj_id,type,title) or null, if the title path can not be converted into a node path.

Definition at line 1148 of file class.ilTree.php.

        {
                global $ilDB, $log;
                //$log->write('getNodePathForTitlePath('.implode('/',$titlePath));
                
                // handle empty title path
                if ($titlePath == null || count($titlePath) == 0)
                {
                        if ($a_startnode_id == 0)
                        {
                                return null;
                        }
                        else
                        {
                                return $this->getNodePath($a_startnode_id);
                        }
                }
 
                // fetch the node path up to the startnode
                if ($a_startnode_id != null && $a_startnode_id != 0)
                {
                        // Start using the node path to the root of the relative path
                        $nodePath = $this->getNodePath($a_startnode_id);
                        $parent = $a_startnode_id;
                }
                else
                {
                        // Start using the root of the tree
                        $nodePath = array();
                        $parent = 0;
                }
 
                
                // Convert title path into Unicode Normal Form C
                // This is needed to ensure that we can compare title path strings with
                // strings from the database.
                require_once('include/Unicode/UtfNormal.php');
                include_once './Services/Utilities/classes/class.ilStr.php';
                $inClause = 'd.title IN (';
                for ($i=0; $i < count($titlePath); $i++)
                {
                        $titlePath[$i] = ilStr::strToLower(UtfNormal::toNFC($titlePath[$i]));
                        if ($i > 0) $inClause .= ',';
                        $inClause .= $ilDB->quote($titlePath[$i],'text');
                }
                $inClause .= ')';
 
                // Fetch all rows that are potential path elements
                if ($this->table_obj_reference)
                {
                        $joinClause = 'JOIN '.$this->table_obj_reference.'  r ON t.child = r.'.$this->ref_pk.' '.
                                'JOIN '.$this->table_obj_data.' d ON r.'.$this->obj_pk.' = d.'.$this->obj_pk;
                }
                else
                {
                        $joinClause = 'JOIN '.$this->table_obj_data.'  d ON t.child = d.'.$this->obj_pk;
                }
                // The ORDER BY clause in the following SQL statement ensures that,
                // in case of a multiple objects with the same title, always the Object
                // with the oldest ref_id is chosen.
                // This ensure, that, if a new object with the same title is added,
                // WebDAV clients can still work with the older object.
                $q = 'SELECT t.depth, t.parent, t.child, d.'.$this->obj_pk.' obj_id, d.type, d.title '.
                        'FROM '.$this->table_tree.'  t '.
                        $joinClause.' '.
                        'WHERE '.$inClause.' '.
                        'AND t.depth <= '.(count($titlePath)+count($nodePath)).' '.
                        'AND t.tree = 1 '.
                        'ORDER BY t.depth, t.child ASC';
                $r = $ilDB->query($q);
                
                $rows = array();
                while ($row = $r->fetchRow(ilDBConstants::FETCHMODE_ASSOC))
                {
                        $row['title'] = UtfNormal::toNFC($row['title']);
                        $row['ref_id'] = $row['child'];
                        $rows[] = $row;
                }
 
                // Extract the path elements from the fetched rows
                for ($i = 0; $i < count($titlePath); $i++) {
                        $pathElementFound = false; 
                        foreach ($rows as $row) {
                                if ($row['parent'] == $parent && 
                                ilStr::strToLower($row['title']) == $titlePath[$i])
                                {
                                        // FIXME - We should test here, if the user has 
                                        // 'visible' permission for the object.
                                        $nodePath[] = $row;
                                        $parent = $row['child'];
                                        $pathElementFound = true;
                                        break;
                                }
                        }
                        // Abort if we haven't found a path element for the current depth
                        if (! $pathElementFound)
                        {
                                //$log->write('ilTree.getNodePathForTitlePath('.var_export($titlePath,true).','.$a_startnode_id.'):null');
                                return null;
                        }
                }
                // Return the node path
                //$log->write('ilTree.getNodePathForTitlePath('.var_export($titlePath,true).','.$a_startnode_id.'):'.var_export($nodePath,true));
                return $nodePath;
        }

References $ilDB, $log, $obj_pk, $r, $row, ilDBConstants\FETCHMODE_ASSOC, getNodePath(), ilStr\strToLower(), and UtfNormal\toNFC().

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getNodeTreeData()

ilTree::getNodeTreeData

(

$a_node_id

)

return all columns of tabel tree

Parameters

type

$a_node_id

Returns

array of table column => values

Exceptions

InvalidArgumentException

Definition at line 1484 of file class.ilTree.php.

        {
                global $ilDB;
                
                if(!$a_node_id)
                {
                        $this->log->logStack(ilLogLevel::ERROR);
                        throw new InvalidArgumentException('Missing or empty parameter $a_node_id: '. $a_node_id);
                }
                
                $query = 'SELECT * FROM '.$this->table_tree.' '.
                                'WHERE child = '.$ilDB->quote($a_node_id,'integer');
                $res = $ilDB->query($query);
                while($row = $res->fetchRow(ilDBConstants::FETCHMODE_ASSOC))
                {
                        return $row;
                }
                return array();
        }

References $ilDB, $query, $res, $row, ilLogLevel\ERROR, and ilDBConstants\FETCHMODE_ASSOC.

Referenced by getRelation(), getSubTreeQuery(), and moveToTrash().

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getObjectDataTable()

ilTree::getObjectDataTable

(

)

Get object data table.

Returns

type

Definition at line 319 of file class.ilTree.php.

        {
                return $this->table_obj_data;
        }

References $table_obj_data.

Referenced by getSubTreeFilteredByObjIds().

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getParentCache()

ilTree::getParentCache

(

)

Get parent cache.

Returns

type

Definition at line 282 of file class.ilTree.php.

        {
                return (array) $this->parent_cache;
        }

References $parent_cache.

getParentId()

ilTree::getParentId

(

$a_node_id

)

get parent id of given node @access public

Parameters

integer

node id

Returns

integer parent id

Exceptions

InvalidArgumentException

Definition at line 2104 of file class.ilTree.php.

        {
                global $ilDB;
                
                if (!isset($a_node_id))
                {
                        $message = "No node_id given!";
                        $this->log->error($message);
                        throw new InvalidArgumentException($message);
                }
 
                $query = 'SELECT parent FROM '.$this->table_tree.' '.
                        'WHERE child = %s '.
                        'AND '.$this->tree_pk.' = %s ';
                $res = $ilDB->queryF($query,array('integer','integer'),array(
                        $a_node_id,
                        $this->tree_id));
 
                $row = $ilDB->fetchObject($res);
                return $row->parent;
        }

References $ilDB, $query, $res, and $row.

Referenced by moveTree().

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getParentNodeData()

ilTree::getParentNodeData

(

$a_node_id

)

get data of parent node from tree and object_data @access public

Parameters

integer

node id

Returns

array

Exceptions

InvalidArgumentException

Definition at line 1730 of file class.ilTree.php.

        {
                global $ilDB;
                global $ilLog;
                
                if (!isset($a_node_id))
                {
                        $ilLog->logStack();
                        throw new InvalidArgumentException(__METHOD__.': No node_id given!');
                }
 
                if ($this->table_obj_reference)
                {
                        // Use inner join instead of left join to improve performance
                        $innerjoin = "JOIN ".$this->table_obj_reference." ON v.child=".$this->table_obj_reference.".".$this->ref_pk." ".
                                                "JOIN ".$this->table_obj_data." ON ".$this->table_obj_reference.".".$this->obj_pk."=".$this->table_obj_data.".".$this->obj_pk." ";
                }
                else
                {
                        // Use inner join instead of left join to improve performance
                        $innerjoin = "JOIN ".$this->table_obj_data." ON v.child=".$this->table_obj_data.".".$this->obj_pk." ";
                }
 
                $query = 'SELECT * FROM '.$this->table_tree.' s, '.$this->table_tree.' v '.
                        $innerjoin.
                        'WHERE s.child = %s '.
                        'AND s.parent = v.child '.
                        'AND s.'.$this->tree_pk.' = %s '.
                        'AND v.'.$this->tree_pk.' = %s';
                $res = $ilDB->queryF($query,array('integer','integer','integer'),array(
                        $a_node_id,
                        $this->tree_id,
                        $this->tree_id));
                $row = $ilDB->fetchAssoc($res);
                return $this->fetchNodeData($row);
        }

References $ilDB, $ilLog, $query, $res, $row, and fetchNodeData().

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getPathFull()

ilTree::getPathFull	(		$a_endnode_id,
			$a_startnode_id = 0
	)

get path from a given startnode to a given endnode if startnode is not given the rootnode is startnode.

This function chooses the algorithm to be used.

@access public

Parameters

integer	node_id of endnode
integer	node_id of startnode (optional)

Returns

array ordered path info (id,title,parent) from start to end

Definition at line 1025 of file class.ilTree.php.

        {
                $pathIds = $this->getPathId($a_endnode_id, $a_startnode_id);
 
                // We retrieve the full path in a single query to improve performance
        global $ilDB;
 
                // Abort if no path ids were found
                if (count($pathIds) == 0)
                {
                        return null;
                }
 
                $inClause = 'child IN (';
                for ($i=0; $i < count($pathIds); $i++)
                {
                        if ($i > 0) $inClause .= ',';
                        $inClause .= $ilDB->quote($pathIds[$i],'integer');
                }
                $inClause .= ')';
 
                $q = 'SELECT * '.
                        'FROM '.$this->table_tree.' '.
            $this->buildJoin().' '.
                        'WHERE '.$inClause.' '.
            'AND '.$this->table_tree.'.'.$this->tree_pk.' = '.$this->ilDB->quote($this->tree_id,'integer').' '.
                        'ORDER BY depth';
                $r = $ilDB->query($q);
 
                $pathFull = array();
                while ($row = $r->fetchRow(ilDBConstants::FETCHMODE_ASSOC))
                {
                        $pathFull[] = $this->fetchNodeData($row);
 
                        // Update cache
                        if ($this->__isMainTree())
                        {
                                #$GLOBALS['ilLog']->write(__METHOD__.': Storing in tree cache '.$row['child']);
                                $this->in_tree_cache[$row['child']] = $row['tree'] == 1;
                        }
                }
                return $pathFull;
        }

References $ilDB, $r, $row, __isMainTree(), buildJoin(), ilDBConstants\FETCHMODE_ASSOC, fetchNodeData(), getPathId(), and ilDB\quote().

Referenced by checkForParentType(), ilTestTaxonomyTree\getPathNodes(), and ilSkillTree\getSkillTreePath().

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getPathId()

ilTree::getPathId	(		$a_endnode_id,
			$a_startnode_id = 0
	)

get path from a given startnode to a given endnode if startnode is not given the rootnode is startnode @access public

Parameters

integer	node_id of endnode
integer	node_id of startnode (optional)

Returns

array all path ids from startnode to endnode

Exceptions

InvalidArgumentException

Definition at line 1105 of file class.ilTree.php.

        {
                if(!$a_endnode_id)
                {
                        $this->log->logStack(ilLogLevel::ERROR);
                        throw new InvalidArgumentException(__METHOD__.': No endnode given!');
                }
                
                // path id cache
                if ($this->isCacheUsed() && isset($this->path_id_cache[$a_endnode_id][$a_startnode_id]))
                {
//echo "<br>getPathIdhit";
                        return $this->path_id_cache[$a_endnode_id][$a_startnode_id];
                }
//echo "<br>miss";
 
                $pathIds = $this->getTreeImplementation()->getPathIds($a_endnode_id, $a_startnode_id);
                
                if($this->__isMainTree())
                {
                        $this->path_id_cache[$a_endnode_id][$a_startnode_id] = $pathIds;
                }
                return $pathIds;
        }

References __isMainTree(), ilLogLevel\ERROR, getTreeImplementation(), and isCacheUsed().

Referenced by getNodePath(), getPathFull(), and ilSkillTree\getTopParentNodeId().

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getRbacSubtreeInfo()

ilTree::getRbacSubtreeInfo

(

$a_endnode_id

)

This method is used for change existing objects and returns all necessary information for this action.

The former use of ilTree::getSubtree needs to much memory.

Parameters

ref_id

ref_id of source node

Returns

Definition at line 2756 of file class.ilTree.php.

        {
                return $this->getTreeImplementation()->getSubtreeInfo($a_endnode_id);
        }

References getTreeImplementation().

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getRelation()

ilTree::getRelation	(		$a_node_a,
			$a_node_b
	)

Get relation of two nodes.

Parameters

int	$a_node_a
int	$a_node_b

Definition at line 478 of file class.ilTree.php.

        {
                return $this->getRelationOfNodes(
                                        $this->getNodeTreeData($a_node_a),
                                        $this->getNodeTreeData($a_node_b)
                );
        }

References getNodeTreeData(), and getRelationOfNodes().

Referenced by isGrandChild().

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getRelationOfNodes()

ilTree::getRelationOfNodes	(		$a_node_a_arr,
			$a_node_b_arr
	)

get relation of two nodes by node data

Parameters

array	$a_node_a_arr
array	$a_node_b_arr

Definition at line 492 of file class.ilTree.php.

        {
                return $this->getTreeImplementation()->getRelation($a_node_a_arr, $a_node_b_arr);
        }

References getTreeImplementation().

Referenced by getRelation().

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getRootId()

ilTree::getRootId

(

)

get the root id of tree @access public

Returns

integer root node id

Definition at line 2231 of file class.ilTree.php.

        {
                return $this->root_id;
        }

References $root_id.

Referenced by ilWorkspaceTree\getObjectsFromType(), and ilTestTaxonomyTree\initOrderedTreeIndex().

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getSavedNodeData()

ilTree::getSavedNodeData

(

$a_parent_id

)

get data saved/deleted nodes

Returns

array data

Parameters

integer

id of parent object of saved object @access public

Exceptions

InvalidArgumentException

Definition at line 2047 of file class.ilTree.php.

        {
                global $ilDB;
                
                if (!isset($a_parent_id))
                {
                        $message = "No node_id given!";
                        $this->log->error($message);
                        throw new InvalidArgumentException($message);
                }
 
                $query = 'SELECT * FROM '.$this->table_tree.' '.
                        $this->buildJoin().
                        'WHERE '.$this->table_tree.'.'.$this->tree_pk.' < %s '.
                        'AND '.$this->table_tree.'.parent = %s';
                $res = $ilDB->queryF($query,array('integer','integer'),array(
                        0,
                        $a_parent_id));
 
                while($row = $ilDB->fetchAssoc($res))
                {
                        $saved[] = $this->fetchNodeData($row);
                }
 
                return $saved ? $saved : array();
        }

References $ilDB, $query, $res, $row, buildJoin(), and fetchNodeData().

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getSavedNodeObjIds()

ilTree::getSavedNodeObjIds

(

array

$a_obj_ids

)

get object id of saved/deleted nodes

Returns

array data

Parameters

array

object ids to check @access public

Definition at line 2080 of file class.ilTree.php.

        {
                global $ilDB;
                
                $query = 'SELECT '.$this->table_obj_data.'.obj_id FROM '.$this->table_tree.' '.
                        $this->buildJoin().
                        'WHERE '.$this->table_tree.'.'.$this->tree_pk.' < '.$ilDB->quote(0, 'integer').' '.
                        'AND '.$ilDB->in($this->table_obj_data.'.obj_id', $a_obj_ids, '', 'integer');
                $res = $ilDB->query($query);
                while($row = $ilDB->fetchAssoc($res))
                {
                        $saved[] = $row['obj_id'];
                }
 
                return $saved ? $saved : array();
        }

References $ilDB, $query, $res, $row, and buildJoin().

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getSubTree()

ilTree::getSubTree	(		$a_node,
			$a_with_data = true,
			$a_type = ""
	)

get all nodes in the subtree under specified node

@access public

Parameters

array	node_data
boolean	with data: default is true otherwise this function return only a ref_id array

Returns

array 2-dim (int/array) key, node_data of each subtree node including the specified node

Exceptions

InvalidArgumentException

Definition at line 902 of file class.ilTree.php.

        {
                global $ilDB;
                
                if (!is_array($a_node))
                {
                        $this->log->logStack(ilLogLevel::ERROR);
                        throw new InvalidArgumentException(__METHOD__.': wrong datatype for node data given');
                }
 
                /*
                if($a_node['lft'] < 1 or $a_node['rgt'] < 2)
                {
                        $GLOBALS['ilLog']->logStack();
                        $message = sprintf('%s: Invalid node given! $a_node["lft"]: %s $a_node["rgt"]: %s',
                                                                   __METHOD__,
                                                                   $a_node['lft'],
                                                                   $a_node['rgt']);
 
                        throw new InvalidArgumentException($message);
                }
                */
                
                $query = $this->getTreeImplementation()->getSubTreeQuery($a_node, $a_type);
                $res = $ilDB->query($query);
                while($row = $ilDB->fetchAssoc($res))
                {
                        if($a_with_data)
                        {
                                $subtree[] = $this->fetchNodeData($row);
                        }
                        else
                        {
                                $subtree[] = $row['child'];
                        }
                        // the lm_data "hack" should be removed in the trunk during an alpha
                        if($this->__isMainTree() || $this->table_tree == "lm_tree")
                        {
                                $this->in_tree_cache[$row['child']] = true;
                        }
                }
                return $subtree ? $subtree : array();
        }

References $a_type, $ilDB, $query, $res, $row, __isMainTree(), ilLogLevel\ERROR, fetchNodeData(), and getTreeImplementation().

Referenced by ilWorkspaceTree\cascadingDelete(), getFilteredSubTree(), ilWorkspaceTree\getObjectsFromType(), and ilTestTaxonomyTree\initOrderedTreeIndex().

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getSubTreeFilteredByObjIds()

ilTree::getSubTreeFilteredByObjIds	(		$a_node_id,
		array	$a_obj_ids,
		array	$a_fields = array()
	)

get all node ids in the subtree under specified node id, filter by object ids

Parameters

int	$a_node_id
array	$a_obj_ids
array	$a_fields

Returns

array

Definition at line 2787 of file class.ilTree.php.

        {
                global $ilDB;
                
                $node = $this->getNodeData($a_node_id);
                if(!sizeof($node))
                {
                        return;
                }
                
                $res = array();
                
                $query = $this->getTreeImplementation()->getSubTreeQuery($node, '', true, array($this->ref_pk));
                
                $fields = '*';
                if(count($a_fields))
                {
                        $fields = implode(',',$a_fields);
                }
                
                $query = "SELECT ".$fields.
                        " FROM ".$this->getTreeTable().
                        " ".$this->buildJoin().
                        " WHERE ".$this->getTableReference().".".$this->ref_pk." IN (".$query.")".
                        " AND ".$ilDB->in($this->getObjectDataTable().".".$this->obj_pk, $a_obj_ids, "", "integer");
                $set = $ilDB->query($query);
                while($row = $ilDB->fetchAssoc($set))
                {
                        $res[] = $row;
                }
                
                return $res;
        }

References $ilDB, $query, $res, $row, getNodeData(), getObjectDataTable(), and getTreeImplementation().

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getSubTreeIds()

ilTree::getSubTreeIds

(

$a_ref_id

)

Get all ids of subnodes.

Returns

Parameters

object

$a_ref_id

Definition at line 887 of file class.ilTree.php.

        {
                return $this->getTreeImplementation()->getSubTreeIds($a_ref_id);
        }

References getTreeImplementation().

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getSubTreeQuery()

ilTree::getSubTreeQuery	(		$a_node_id,
			$a_fields = array(),
			$a_types = '',
			$a_force_join_reference = false
	)

Get tree subtree query.

Parameters

type	$a_node_id
type	$a_types
type	$a_force_join_reference

Returns

type

Definition at line 2769 of file class.ilTree.php.

        {
                return $this->getTreeImplementation()->getSubTreeQuery(
                                $this->getNodeTreeData($a_node_id),
                                $a_types, 
                                $a_force_join_reference, 
                                $a_fields);
        }

References getNodeTreeData(), and getTreeImplementation().

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getSubTreeTypes()

ilTree::getSubTreeTypes	(		$a_node,
			$a_filter = 0
	)

get types of nodes in the subtree under specified node

@access public

Parameters

array	node_id
array	object types to filter e.g array('rolf')

Returns

array 2-dim (int/array) key, node_data of each subtree node including the specified node

Definition at line 954 of file class.ilTree.php.

        {
                $a_filter = $a_filter ? $a_filter : array();
 
                foreach($this->getSubtree($this->getNodeData($a_node)) as $node)
                {
                        if(in_array($node["type"],$a_filter))
                        {
                                continue;
                        }
                        $types["$node[type]"] = $node["type"];
                }
                return $types ? $types : array();
        }

References getNodeData().

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getTableReference()

ilTree::getTableReference

(

)

Get reference table if available.

Definition at line 336 of file class.ilTree.php.

        {
                return $this->table_obj_reference;
        }

References $table_obj_reference.

getTreeId()

ilTree::getTreeId

(

)

get tree id @access public

Returns

integer tree id

Definition at line 2245 of file class.ilTree.php.

        {
                return $this->tree_id;
        }

References $tree_id.

Referenced by ilWorkspaceExplorer\__construct().

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getTreeImplementation()

ilTree::getTreeImplementation

(

)

Get tree implementation.

Returns

ilTreeImplementation $impl

Definition at line 247 of file class.ilTree.php.

        {
                return $this->tree_impl;
        }

References $tree_impl.

Referenced by __checkDelete(), deleteTree(), getPathId(), getRbacSubtreeInfo(), getRelationOfNodes(), getSubTree(), getSubTreeFilteredByObjIds(), getSubTreeIds(), getSubTreeQuery(), insertNode(), moveToTrash(), moveTree(), and validateParentRelations().

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getTreePk()

ilTree::getTreePk

(

)

Get tree primary key.

Returns

string column of pk

Definition at line 328 of file class.ilTree.php.

        {
                return $this->tree_pk;
        }

References $tree_pk.

getTreeTable()

ilTree::getTreeTable

(

)

Get tree table name.

Returns

string tree table name

Definition at line 310 of file class.ilTree.php.

        {
                return $this->table_tree;
        }

References $table_tree.

initLangCode()

ilTree::initLangCode

(

)

Store user language.

This function is used by the "main" tree only (during initialisation).

Definition at line 291 of file class.ilTree.php.

        {
                global $ilUser;
                
                // lang_code is only required in $this->fetchnodedata
                if (!is_object($ilUser))
                {
                        $this->lang_code = "en";
                }
                else
                {
                        $this->lang_code = $ilUser->getCurrentLanguage();
                }
        }

References $ilUser.

initTreeImplementation()

ilTree::initTreeImplementation

(

)

Init tree implementation.

Definition at line 205 of file class.ilTree.php.

        {
                global $ilDB;
                
                
                if(!is_object($GLOBALS['ilSetting']) or $GLOBALS['ilSetting']->getModule() != 'common')
                {
                        include_once './Services/Administration/classes/class.ilSetting.php';
                        $setting = new ilSetting('common');
                }
                else
                {
                        $setting = $GLOBALS['ilSetting'];
                }
                
                if($this->__isMainTree())
                {
                        if($setting->get('main_tree_impl','ns') == 'ns')
                        {
                                #$GLOBALS['ilLog']->write(__METHOD__.': Using nested set.');
                                include_once './Services/Tree/classes/class.ilNestedSetTree.php';
                                $this->tree_impl = new ilNestedSetTree($this);
                        }
                        else
                        {
                                #$GLOBALS['ilLog']->write(__METHOD__.': Using materialized path.');
                                include_once './Services/Tree/classes/class.ilMaterializedPathTree.php';
                                $this->tree_impl = new ilMaterializedPathTree($this);
                        }
                }
                else
                {
                        #$GLOBALS['ilLog']->write(__METHOD__.': Using netsted set for non main tree.');
                        include_once './Services/Tree/classes/class.ilNestedSetTree.php';
                        $this->tree_impl = new ilNestedSetTree($this);
                }
        }

References $GLOBALS, $ilDB, and __isMainTree().

Referenced by __construct(), and setTableNames().

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insertNode()

ilTree::insertNode	(		$a_node_id,
			$a_parent_id,
			$a_pos = IL_LAST_NODE,
			$a_reset_deletion_date = false
	)

insert new node with node_id under parent node with parent_id @access public

Parameters

integer	node_id
integer	parent_id
integer	IL_LAST_NODE | IL_FIRST_NODE | node id of preceding child

Exceptions

InvalidArgumentException

Definition at line 792 of file class.ilTree.php.

        {
                global $ilDB;
                
//echo "+$a_node_id+$a_parent_id+";
                // CHECK node_id and parent_id > 0 if in main tree
                if($this->__isMainTree())
                {
                        if($a_node_id <= 1 or $a_parent_id <= 0)
                        {
                                $message = sprintf('Invalid parameters! $a_node_id: %s $a_parent_id: %s',
                                                                   $a_node_id,
                                                                   $a_parent_id);
                                $this->log->logStack(ilLogLevel::ERROR, $message);
                                throw new InvalidArgumentException($message);
                        }
                }
 
 
                if (!isset($a_node_id) or !isset($a_parent_id))
                {
                        $this->log->logStack(ilLogLevel::ERROR);
                        throw new InvalidArgumentException("Missing parameter! ".
                                "node_id: ".$a_node_id." parent_id: ".$a_parent_id);
                }
                if ($this->isInTree($a_node_id))
                {
                        throw new InvalidArgumentException("Node ".$a_node_id." already in tree ".
                                                                         $this->table_tree."!");
                }
 
                $this->getTreeImplementation()->insertNode($a_node_id, $a_parent_id, $a_pos);
                
                $this->in_tree_cache[$a_node_id] = true;
 
                // reset deletion date
                if ($a_reset_deletion_date)
                {
                        ilObject::_resetDeletedDate($a_node_id);
                }
                
                if (isset($GLOBALS["ilAppEventHandler"]) && $this->__isMainTree()) {
                        $GLOBALS['ilAppEventHandler']->raise(
                                        "Services/Tree", 
                                        "insertNode", 
                                        array(
                                                'tree'          => $this->table_tree,
                                                'node_id'       => $a_node_id, 
                                                'parent_id'     => $a_parent_id)
                        );
                }
        }

References $GLOBALS, $ilDB, __isMainTree(), ilObject\_resetDeletedDate(), ilLogLevel\ERROR, getTreeImplementation(), isInTree(), and sprintf.

Referenced by insertNodeFromTrash(), and ilWorkspaceTree\insertObject().

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insertNodeFromTrash()

ilTree::insertNodeFromTrash	(		$a_source_id,
			$a_target_id,
			$a_tree_id,
			$a_pos = IL_LAST_NODE,
			$a_reset_deleted_date = false
	)

Insert node from trash deletes trash entry.

If we have database query exceptions we could wrap insertNode in try/catch and rollback if the insert failed.

Parameters

type	$a_source_id
type	$a_target_id
type	$a_tree_id

Exceptions

InvalidArgumentException

Definition at line 751 of file class.ilTree.php.

        {
                global $ilDB;
                
                if($this->__isMainTree())
                {
                        if($a_source_id <= 1 or $a_target_id <= 0)
                        {
                                ilLoggerFactory::getLogger('tree')->logStack(ilLogLevel::INFO);
                                throw new InvalidArgumentException('Invalid parameter given for ilTree::insertNodeFromTrash');
                        }
                }
                if (!isset($a_source_id) or !isset($a_target_id))
                {
                        ilLoggerFactory::getLogger('tree')->logStack(ilLogLevel::INFO);
                        throw new InvalidArgumentException('Missing parameter for ilTree::insertNodeFromTrash');
                }
                if($this->isInTree($a_source_id))
                {
                        ilLoggerFactory::getLogger('tree')->error('Node already in tree');
                        ilLoggerFactory::getLogger('tree')->logStack(ilLogLevel::INFO);
                        throw new InvalidArgumentException('Node already in tree.');
                }
                
                $query = 'DELETE from tree '.
                                'WHERE tree = '.$ilDB->quote($a_tree_id,'integer').' '.
                                'AND child = '.$ilDB->quote($a_source_id,'integer');
                $ilDB->manipulate($query);
                
                $this->insertNode($a_source_id, $a_target_id, IL_LAST_NODE, $a_reset_deleted_date);
        }

References $ilDB, $query, __isMainTree(), ilLoggerFactory\getLogger(), IL_LAST_NODE, ilLogLevel\INFO, insertNode(), and isInTree().

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isCacheUsed()

ilTree::isCacheUsed

(

)

Check if cache is active.

Returns

bool

Reimplemented in ilLMTree.

Definition at line 264 of file class.ilTree.php.

        {
                return $this->__isMainTree() and $this->use_cache;
        }

References __isMainTree().

Referenced by checkForParentType(), fetchNodeData(), fetchTranslationFromObjectDataCache(), getChilds(), getPathId(), isInTree(), isSaved(), preloadDeleted(), and preloadDepthParent().

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isDeleted()

ilTree::isDeleted

(

$a_node_id

)

This is a wrapper for isSaved() with a more useful name.

Parameters

int

$a_node_id

Definition at line 1957 of file class.ilTree.php.

        {
                return $this->isSaved($a_node_id);
        }

References isSaved().

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isGrandChild()

ilTree::isGrandChild	(		$a_startnode_id,
			$a_querynode_id
	)

checks if a node is in the path of an other node @access public

Parameters

integer	object id of start node
integer	object id of query node

Returns

integer number of entries

Definition at line 1774 of file class.ilTree.php.

        {
                return $this->getRelation($a_startnode_id, $a_querynode_id) == self::RELATION_PARENT;
        }

References getRelation(), and RELATION_PARENT.

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isInTree()

ilTree::isInTree

(

$a_node_id

)

get all information of a node.

get data of a specific node from tree and object_data @access public

Parameters

integer

node id

Returns

boolean true, if node id is in tree

Definition at line 1678 of file class.ilTree.php.

        {
                global $ilDB;
 
                if (!isset($a_node_id))
                {
                        return false;
                        #$this->ilErr->raiseError(get_class($this)."::getNodeData(): No node_id given! ",$this->ilErr->WARNING);
                }
                // is in tree cache
                if ($this->isCacheUsed() && isset($this->in_tree_cache[$a_node_id]))
                {
                        #$GLOBALS['ilLog']->write(__METHOD__.': Using in tree cache '.$a_node_id);
//echo "<br>in_tree_hit";
                        return $this->in_tree_cache[$a_node_id];
                }
 
                $query = 'SELECT * FROM '.$this->table_tree.' '.
                        'WHERE '.$this->table_tree.'.child = %s '.
                        'AND '.$this->table_tree.'.'.$this->tree_pk.' = %s';
                        
                $res = $ilDB->queryF($query,array('integer','integer'),array(
                        $a_node_id,
                        $this->tree_id));
 
                if ($res->numRows() > 0)
                {
                        if($this->__isMainTree())
                        {
                                #$GLOBALS['ilLog']->write(__METHOD__.': Storing in tree cache '.$a_node_id.' = true');
                                $this->in_tree_cache[$a_node_id] = true;
                        }
                        return true;
                }
                else
                {
                        if($this->__isMainTree())
                        {
                                #$GLOBALS['ilLog']->write(__METHOD__.': Storing in tree cache '.$a_node_id.' = false');
                                $this->in_tree_cache[$a_node_id] = false;
                        }
                        return false;
                }
        }

References $ilDB, $query, $res, __isMainTree(), and isCacheUsed().

Referenced by checkForParentType(), insertNode(), and insertNodeFromTrash().

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isSaved()

ilTree::isSaved

(

$a_node_id

)

Use method isDeleted check if node is saved.

Deprecated:

since 4.4.0

Definition at line 1967 of file class.ilTree.php.

        {
                global $ilDB;
                
                // is saved cache
                if ($this->isCacheUsed() && isset($this->is_saved_cache[$a_node_id]))
                {
//echo "<br>issavedhit";
                        return $this->is_saved_cache[$a_node_id];
                }
 
                $query = 'SELECT '.$this->tree_pk.' FROM '.$this->table_tree.' '.
                        'WHERE child = %s ';
                $res = $ilDB->queryF($query,array('integer'),array($a_node_id));
                $row = $ilDB->fetchAssoc($res);
 
                if ($row[$this->tree_pk] < 0)
                {
                        if($this->__isMainTree())
                        {
                                $this->is_saved_cache[$a_node_id] = true;
                        }
                        return true;
                }
                else
                {
                        if($this->__isMainTree())
                        {
                                $this->is_saved_cache[$a_node_id] = false;
                        }
                        return false;
                }
        }

References $ilDB, $query, $res, $row, __isMainTree(), and isCacheUsed().

Referenced by isDeleted().

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lookupTrashedObjectTypes()

ilTree::lookupTrashedObjectTypes

(

)

Lookup object types in trash @global type $ilDB.

Returns

type

Definition at line 2845 of file class.ilTree.php.

        {
                global $ilDB;
                
                $query = 'SELECT DISTINCT(o.type) '.$ilDB->quoteIdentifier('type').' FROM tree t JOIN object_reference r ON child = r.ref_id '.
                                'JOIN object_data o on r.obj_id = o.obj_id '.
                                'WHERE tree < '.$ilDB->quote(0,'integer').' '.
                                'AND child = -tree '.
                                'GROUP BY o.type';
                $res = $ilDB->query($query);
                
                $types_deleted = array();
                while($row = $res->fetchRow(ilDBConstants::FETCHMODE_OBJECT))
                {
                        $types_deleted[] = $row->type;
                }
                return $types_deleted;
        }

References $ilDB, $query, $res, $row, and ilDBConstants\FETCHMODE_OBJECT.

moveToTrash()

ilTree::moveToTrash	(		$a_node_id,
			$a_set_deleted = false
	)

Wrapper for saveSubTree.

Parameters

int	$a_node_id
bool	$a_set_deleted

Returns

integer

Exceptions

InvalidArgumentException

Definition at line 1900 of file class.ilTree.php.

        {
                global $ilDB;
 
                if(!$a_node_id)
                {
                        $this->log->logStack(ilLogLevel::ERROR);
                        throw new InvalidArgumentException('No valid parameter given! $a_node_id: '.$a_node_id);
                }
 
 
                $query = $this->getTreeImplementation()->getSubTreeQuery($this->getNodeTreeData($a_node_id),'',false);
                $res = $ilDB->query($query);
 
                $subnodes = array();
                while($row = $res->fetchRow(ilDBConstants::FETCHMODE_ASSOC))
                {
                        $subnodes[] = $row['child'];
                }
 
                if(!count($subnodes))
                {
                        // Possibly already deleted
                        return false;
                }
 
                if($a_set_deleted)
                {
                        include_once './Services/Object/classes/class.ilObject.php';
                        ilObject::setDeletedDates($subnodes);
                }
 
                // netsted set <=> mp
                $this->getTreeImplementation()->moveToTrash($a_node_id);
 
                return true;
        }

References $ilDB, $query, $res, $row, ilLogLevel\ERROR, ilDBConstants\FETCHMODE_ASSOC, getNodeTreeData(), getTreeImplementation(), and ilObject\setDeletedDates().

Referenced by saveSubTree().

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moveTree()

ilTree::moveTree	(		$a_source_id,
			$a_target_id,
			$a_location = self::POS_LAST_NODE
	)

Move Tree Implementation.

@access public

Parameters

int	source ref_id
int	target ref_id
int	location IL_LAST_NODE or IL_FIRST_NODE (IL_FIRST_NODE not implemented yet)

Returns

bool

Definition at line 2727 of file class.ilTree.php.

        {
                $old_parent_id = $this->getParentId($a_source_id);
                $this->getTreeImplementation()->moveTree($a_source_id,$a_target_id,$a_location);
                if (isset($GLOBALS["ilAppEventHandler"]) && $this->__isMainTree()) {
                        $GLOBALS['ilAppEventHandler']->raise(
                                        "Services/Tree", 
                                        "moveTree", 
                                        array(
                                                'tree'                  => $this->table_tree,
                                                'source_id'     => $a_source_id, 
                                                'target_id'     => $a_target_id,
                                                'old_parent_id' => $old_parent_id
                                                )
                        );
                }
                return true;
        }

References $GLOBALS, __isMainTree(), getParentId(), and getTreeImplementation().

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preloadDeleted()

ilTree::preloadDeleted

(

$a_node_ids

)

Preload deleted information.

Parameters

array

nodfe ids

Returns

bool

Definition at line 2007 of file class.ilTree.php.

        {
                global $ilDB;
 
                if (!is_array($a_node_ids) || !$this->isCacheUsed())
                {
                        return;
                }
 
                $query = 'SELECT '.$this->tree_pk.', child FROM '.$this->table_tree.' '.
                        'WHERE '.$ilDB->in("child", $a_node_ids, false, "integer");
 
                $res = $ilDB->query($query);
                while ($row = $ilDB->fetchAssoc($res))
                {
                        if ($row[$this->tree_pk] < 0)
                        {
                                if($this->__isMainTree())
                                {
                                        $this->is_saved_cache[$row["child"]] = true;
                                }
                        }
                        else
                        {
                                if($this->__isMainTree())
                                {
                                        $this->is_saved_cache[$row["child"]] = false;
                                }
                        }
                }
        }

References $ilDB, $query, $res, $row, __isMainTree(), and isCacheUsed().

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preloadDepthParent()

ilTree::preloadDepthParent

(

$a_node_ids

)

Preload depth/parent.

Parameters

return

Definition at line 1076 of file class.ilTree.php.

        {
                global $ilDB;
 
                if (!$this->__isMainTree() || !is_array($a_node_ids) || !$this->isCacheUsed())
                {
                        return;
                }
 
                $res = $ilDB->query('SELECT t.depth, t.parent, t.child '.
                        'FROM '.$this->table_tree.' t '.
                        'WHERE '.$ilDB->in("child", $a_node_ids, false, "integer").
                        'AND '.$this->tree_pk.' = '.$ilDB->quote($this->tree_id, "integer"));
                while ($row = $ilDB->fetchAssoc($res))
                {
                        $this->depth_cache[$row["child"]] = $row["depth"];
                        $this->parent_cache[$row["child"]] = $row["parent"];
                }
        }

References $ilDB, $res, $row, __isMainTree(), and isCacheUsed().

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readRootId()

ilTree::readRootId

(

)

read root id from database

Parameters

root_id

@access public

Returns

int new root id

Definition at line 2211 of file class.ilTree.php.

        {
                global $ilDB;
                
                $query = 'SELECT child FROM '.$this->table_tree.' '.
                        'WHERE parent = %s '.
                        'AND '.$this->tree_pk.' = %s ';
                $res = $ilDB->queryF($query,array('integer','integer'),array(
                        0,
                        $this->tree_id));
                $row = $ilDB->fetchObject($res);
                $this->root_id = $row->child;
                return $this->root_id;
        }

References $ilDB, $query, $res, $root_id, and $row.

Referenced by ilWorkspaceTree\__construct(), ilWorkspaceExplorer\__construct(), ilTestTaxonomyTree\__construct(), ilWorkspaceTree\cascadingDelete(), ilWorkspaceAccessHandler\checkAccessOfUser(), and ilSkillTree\getMaxOrderNr().

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removeTree()

ilTree::removeTree

(

$a_tree_id

)

remove an existing tree

Parameters

integer

a_tree_id: tree to be removed

Returns

boolean true on success @access public

Exceptions

InvalidArgumentException

Definition at line 1871 of file class.ilTree.php.

        {
                global $ilDB;
                
                // OPERATION NOT ALLOWED ON MAIN TREE
                if($this->__isMainTree())
                {
                        $this->log->logStack(ilLogLevel::ERROR);
                        throw new InvalidArgumentException('Operation not allowed on main tree');
                }
                if (!$a_tree_id)
                {
                        $this->log->logStack(ilLogLevel::ERROR);
                        throw new InvalidArgumentException('Missing parameter tree id');
                }
 
                $query = 'DELETE FROM '.$this->table_tree.
                        ' WHERE '.$this->tree_pk.' = %s ';
                $ilDB->manipulateF($query,array('integer'),array($a_tree_id));
                return true;
        }

References $ilDB, $query, __isMainTree(), and ilLogLevel\ERROR.

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renumber()

ilTree::renumber	(		$node_id = 1,
			$i = 1
	)

Wrapper for renumber.

This method locks the table tree (recursive) @access public

Parameters

integer	node_id where to start (usually the root node)
integer	first left value of start node (usually 1)

Returns

integer current left value of recursive call

Definition at line 2401 of file class.ilTree.php.

        {
                global $ilDB;
 
                $renumber_callable = function(ilDBInterface $ilDB) use($node_id,$i,&$return)
                {
 
                        $return = $this->__renumber($node_id,$i);
 
                };
 
                // LOCKED ###################################
                if($this->__isMainTree())
                {
                        $ilAtomQuery = $ilDB->buildAtomQuery();
                        $ilAtomQuery->addTableLock( $this->table_tree );
 
                        $ilAtomQuery->addQueryCallable($renumber_callable);
                        $ilAtomQuery->run();
                }
                else
                {
                        $renumber_callable($ilDB);
                }
                return $return;
        }

References $ilDB, __isMainTree(), and __renumber().

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resetInTreeCache()

ilTree::resetInTreeCache

(

)

Definition at line 352 of file class.ilTree.php.

        {
                $this->in_tree_cache = array();
        }

Referenced by deleteTree().

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saveSubTree()

ilTree::saveSubTree	(		$a_node_id,
			$a_set_deleted = false
	)

Use the wrapper moveToTrash save subtree: delete a subtree (defined by node_id) to a new tree with $this->tree_id -node_id.

This is neccessary for undelete functionality

Parameters

integer

node_id

Returns

integer @access public

Exceptions

InvalidArgumentException

Deprecated:

since 4.4.0

Definition at line 1948 of file class.ilTree.php.

        {
                return $this->moveToTrash($a_node_id, $a_set_deleted);
        }

References moveToTrash().

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setObjectTablePK()

ilTree::setObjectTablePK

(

$a_column_name

)

set column containing primary key in object table @access public

Parameters

string

column name

Returns

boolean true, when successfully set

Exceptions

InvalidArgumentException

Definition at line 420 of file class.ilTree.php.

        {
                if (!isset($a_column_name))
                {
                        $message = "No column name given!";
                        $this->log->error($message);
                        throw new InvalidArgumentException($message);
                }
 
                $this->obj_pk = $a_column_name;
                return true;
        }

Referenced by ilECSCmsTree\__construct(), and ilWorkspaceTree\__construct().

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setReferenceTablePK()

ilTree::setReferenceTablePK

(

$a_column_name

)

set column containing primary key in reference table @access public

Parameters

string

column name

Returns

boolean true, when successfully set

Exceptions

InvalidArgumentException

Definition at line 400 of file class.ilTree.php.

        {
                if (!isset($a_column_name))
                {
                        $message = "No column name given!";
                        $this->log->error($message);
                        throw new InvalidArgumentException($message);
                }
 
                $this->ref_pk = $a_column_name;
                return true;
        }

Referenced by ilWorkspaceTree\__construct().

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setRootId()

ilTree::setRootId

(

$a_root_id

)

Definition at line 2235 of file class.ilTree.php.

        {
                $this->root_id = $a_root_id;
        }

Referenced by ilWorkspaceExplorer\__construct(), and ilWorkspaceTree\createTreeForUser().

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setTableNames()

ilTree::setTableNames	(		$a_table_tree,
			$a_table_obj_data,
			$a_table_obj_reference = ""
	)

set table names The primary key of the table containing your object_data must be 'obj_id' You may use a reference table.

If no reference table is specified the given tree table is directly joined with the given object_data table. The primary key in object_data table and its foreign key in reference table must have the same name!

Parameters

string	table name of tree table
string	table name of object_data table
string	table name of object_reference table (optional) @access public

Returns

boolean

Exceptions

InvalidArgumentException

Definition at line 374 of file class.ilTree.php.

        {
                if (!isset($a_table_tree) or !isset($a_table_obj_data))
                {
                        $message = "Missing parameter! ".
                                                                "tree table: ".$a_table_tree." object data table: ".$a_table_obj_data;
                        $this->log->error($message);
                        throw new InvalidArgumentException($message);
                }
 
                $this->table_tree = $a_table_tree;
                $this->table_obj_data = $a_table_obj_data;
                $this->table_obj_reference = $a_table_obj_reference;
                
                $this->initTreeImplementation();
 
                return true;
        }

References initTreeImplementation().

Referenced by ilSCORM2004Tree\__construct(), ilTaxonomyTree\__construct(), ilAICCTree\__construct(), ilSCORMTree\__construct(), ilLMTree\__construct(), ilECSCmsTree\__construct(), ilWorkspaceTree\__construct(), ilBookmarkTree\__construct(), and ilSkillTree\__construct().

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setTreeId()

ilTree::setTreeId

(

$a_tree_id

)

set tree id @access public

Returns

integer tree id

Definition at line 2255 of file class.ilTree.php.

        {
                $this->tree_id = $a_tree_id;
        }

setTreeTablePK()

ilTree::setTreeTablePK

(

$a_column_name

)

set column containing primary key in tree table @access public

Parameters

string

column name

Returns

boolean true, when successfully set

Exceptions

InvalidArgumentException

Definition at line 440 of file class.ilTree.php.

        {
                if (!isset($a_column_name))
                {
                        $message = "No column name given!";
                        $this->log->error($message);
                        throw new InvalidArgumentException($message);
                }
 
                $this->tree_pk = $a_column_name;
                return true;
        }

Referenced by ilSCORM2004Tree\__construct(), ilTaxonomyTree\__construct(), ilAICCTree\__construct(), ilSCORMTree\__construct(), ilLMTree\__construct(), ilWorkspaceTree\__construct(), and ilSkillTree\__construct().

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useCache()

ilTree::useCache

(

$a_use = true

)

Use Cache (usually activated)

Definition at line 255 of file class.ilTree.php.

        {
                $this->use_cache = $a_use;
        }

Referenced by ilLMTree\__construct(), and ilECSCmsTree\__construct().

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validateParentRelations()

ilTree::validateParentRelations

(

)

Validate parent relations of tree.

Returns

int[] array of failure nodes

Definition at line 1010 of file class.ilTree.php.

        {
                return $this->getTreeImplementation()->validateParentRelations();
        }

References getTreeImplementation().

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Field Documentation

$depth_cache

ilTree::$depth_cache = array()

protected

Definition at line 134 of file class.ilTree.php.

Referenced by getDepthCache().

$gap

ilTree::$gap

Size of the gaps to be created in the nested sets sequence numbering of the

tree nodes. Having gaps in the tree greatly improves performance on all operations that add or remove tree nodes.

Setting this to zero will leave no gaps in the tree. Setting this to a value larger than zero will create gaps in the tree. Each gap leaves room in the sequence numbering for the specified number of nodes. (The gap is expressed as the number of nodes. Since each node consumes two sequence numbers, specifying a gap of 1 will leave space for 2 sequence numbers.)

A gap is created, when a new child is added to a node, and when not
enough room between node.rgt and the child with the highest node.rgt value 
of the node is available.
A gap is closed, when a node is removed and when (node.rgt - node.lft) 
is bigger than gap * 2.


@var                integer
@access     private

Definition at line 132 of file class.ilTree.php.

Referenced by getGap().

$ilias

ilTree::$ilias

Definition at line 42 of file class.ilTree.php.

$in_tree_cache

ilTree::$in_tree_cache = array()

protected

Definition at line 136 of file class.ilTree.php.

$log

ilTree::$log

Definition at line 50 of file class.ilTree.php.

Referenced by getNodePathForTitlePath().

$obj_pk

ilTree::$obj_pk

Definition at line 99 of file class.ilTree.php.

Referenced by checkTreeChilds(), getNodePathForTitlePath(), and ilWorkspaceTree\lookupObjectId().

$parent_cache

ilTree::$parent_cache = array()

protected

Definition at line 135 of file class.ilTree.php.

Referenced by getParentCache().

$ref_pk

ilTree::$ref_pk

Definition at line 92 of file class.ilTree.php.

Referenced by ilWorkspaceTree\lookupNodeId().

$root_id

ilTree::$root_id

Definition at line 57 of file class.ilTree.php.

Referenced by ilWorkspaceTree\cascadingDelete(), ilWorkspaceTree\createTreeForUser(), getRootId(), and readRootId().

$table_obj_data

ilTree::$table_obj_data

Definition at line 78 of file class.ilTree.php.

Referenced by getObjectDataTable().

$table_obj_reference

ilTree::$table_obj_reference

Definition at line 85 of file class.ilTree.php.

Referenced by getTableReference().

$table_tree

ilTree::$table_tree

Definition at line 71 of file class.ilTree.php.

Referenced by getTreeTable().

$tree_id

ilTree::$tree_id

Definition at line 64 of file class.ilTree.php.

Referenced by getNodeData(), and getTreeId().

$tree_impl

ilTree::$tree_impl = NULL

private

Definition at line 138 of file class.ilTree.php.

Referenced by getTreeImplementation().

$tree_pk

ilTree::$tree_pk

Definition at line 106 of file class.ilTree.php.

Referenced by getNodeData(), and getTreePk().

POS_FIRST_NODE

const ilTree::POS_FIRST_NODE = -1

Definition at line 27 of file class.ilTree.php.

Referenced by ilNestedSetTree\insertNode().

POS_LAST_NODE

const ilTree::POS_LAST_NODE = -2

Definition at line 26 of file class.ilTree.php.

RELATION_CHILD

const ilTree::RELATION_CHILD = 1

Definition at line 30 of file class.ilTree.php.

Referenced by ilObjRole\adjustPermissions(), ilMaterializedPathTree\getRelation(), and ilNestedSetTree\getRelation().

RELATION_EQUALS

const ilTree::RELATION_EQUALS = 4

Definition at line 33 of file class.ilTree.php.

Referenced by ilObjRole\adjustPermissions(), ilMaterializedPathTree\getRelation(), and ilNestedSetTree\getRelation().

RELATION_NONE

const ilTree::RELATION_NONE = 5

Definition at line 34 of file class.ilTree.php.

Referenced by ilObjRole\adjustPermissions(), ilMaterializedPathTree\getRelation(), and ilNestedSetTree\getRelation().

RELATION_PARENT

const ilTree::RELATION_PARENT = 2

Definition at line 31 of file class.ilTree.php.

Referenced by ilObjRole\adjustPermissions(), ilMaterializedPathTree\getRelation(), ilNestedSetTree\getRelation(), and isGrandChild().

RELATION_SIBLING

const ilTree::RELATION_SIBLING = 3

Definition at line 32 of file class.ilTree.php.

Referenced by ilObjRole\adjustPermissions(), ilMaterializedPathTree\getRelation(), and ilNestedSetTree\getRelation().

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The documentation for this class was generated from the following file:

• Services/Tree/classes/class.ilTree.php