class.ilTaxonomyNode.php

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<?php

/* Copyright (c) 1998-2012 ILIAS open source, Extended GPL, see docs/LICENSE */


class ilTaxonomyNode
{
        var $type;
        var $id;
        var $title;

        function __construct($a_id = 0)
        {
                $this->id = $a_id;
                
//              include_once("./Services/Taxonomy/classes/class.ilTaxonomyTree.php");
//              $this->taxonomy_tree = new ilTaxonomyTree();

                if($a_id != 0)
                {
                        $this->read();
                }

                $this->setType("taxn");
        }

        function setTitle($a_title)
        {
                $this->title = $a_title;
        }

        function getTitle()
        {
                return $this->title;
        }

        function setType($a_type)
        {
                $this->type = $a_type;
        }

        function getType()
        {
                return $this->type;
        }

        function setId($a_id)
        {
                $this->id = $a_id;
        }

        function getId()
        {
                return $this->id;
        }

        function setOrderNr($a_val)
        {
                $this->order_nr = $a_val;
        }
        
        function getOrderNr()
        {
                return $this->order_nr;
        }

        function setTaxonomyId($a_val)
        {
                $this->taxonomy_id = $a_val;
        }
        
        function getTaxonomyId()
        {
                return $this->taxonomy_id;
        }
        
        function read()
        {
                global $ilDB;

                if(!isset($this->data_record))
                {
                        $query = "SELECT * FROM tax_node WHERE obj_id = ".
                                $ilDB->quote($this->id, "integer");
                        $obj_set = $ilDB->query($query);
                        $this->data_record = $ilDB->fetchAssoc($obj_set);
                }
                $this->setType($this->data_record["type"]);
                $this->setTitle($this->data_record["title"]);
                $this->setOrderNr($this->data_record["order_nr"]);
                $this->setTaxonomyId($this->data_record["tax_id"]);
        }

        function create()
        {
                global $ilDB;
                
                if ($this->getTaxonomyId() <= 0)
                {
                        die("ilTaxonomyNode->create: No taxonomy ID given");
                }

                // insert object data
                $id = $ilDB->nextId("tax_node");
                $query = "INSERT INTO tax_node (obj_id, title, type, create_date, order_nr, tax_id) ".
                        "VALUES (".
                        $ilDB->quote($id, "integer").",".
                        $ilDB->quote($this->getTitle(), "text").",".
                        $ilDB->quote($this->getType(), "text").", ".
                        $ilDB->now().", ".
                        $ilDB->quote((int) $this->getOrderNr(), "integer").", ".
                        $ilDB->quote((int) $this->getTaxonomyId(), "integer").
                        ")";
                $ilDB->manipulate($query);
                $this->setId($id);

        }

        function update()
        {
                global $ilDB;

                $query = "UPDATE tax_node SET ".
                        " title = ".$ilDB->quote($this->getTitle(), "text").
                        " ,order_nr = ".$ilDB->quote((int) $this->getOrderNr(), "integer").
                        " WHERE obj_id = ".$ilDB->quote($this->getId(), "integer");

                $ilDB->manipulate($query);
        }

        function delete()
        {
                global $ilDB;
                
                // delete all assignments of the node
                include_once("./Services/Taxonomy/classes/class.ilTaxNodeAssignment.php");
                ilTaxNodeAssignment::deleteAllAssignmentsOfNode($this->getId());
                
                $query = "DELETE FROM tax_node WHERE obj_id= ".
                        $ilDB->quote($this->getId(), "integer");
                $ilDB->manipulate($query);
        }

        function copy($a_tax_id = 0)
        {
                $taxn = new ilTaxonomyNode();
                $taxn->setTitle($this->getTitle());
                $taxn->setType($this->getType());
                $taxn->setOrderNr($this->getOrderNr());
                if ($a_tax_id == 0)
                {
                        $taxn->setTaxonomyId($this->getTaxonomyId());
                }
                else
                {
                        $taxn->setTaxonomyId($a_tax_id);
                }

                $taxn->create();

                return $taxn;
        }

        protected static function _lookup($a_obj_id, $a_field)
        {
                global $ilDB;

                $query = "SELECT $a_field FROM tax_node WHERE obj_id = ".
                        $ilDB->quote($a_obj_id, "integer");
                $obj_set = $ilDB->query($query);
                $obj_rec = $ilDB->fetchAssoc($obj_set);

                return $obj_rec[$a_field];
        }

        static function _lookupTitle($a_obj_id)
        {
                global $ilDB;

                return self::_lookup($a_obj_id, "title");
        }

        static function putInTree($a_tax_id, $a_node, $a_parent_id = "", $a_target_node_id = "",
                $a_order_nr = 0)
        {
                include_once("./Services/Taxonomy/classes/class.ilTaxonomyTree.php");
                $tax_tree = new ilTaxonomyTree($a_tax_id);

                // determine parent
                $parent_id = ($a_parent_id != "")
                        ? $a_parent_id
                        : $tax_tree->readRootId();

                // determine target
                if ($a_target_node_id != "")
                {
                        $target = $a_target_node_id;
                }
                else
                {
                        // determine last child that serves as predecessor
                        $childs = $tax_tree->getChilds($parent_id);

                        if (count($childs) == 0)
                        {
                                $target = IL_FIRST_NODE;
                        }
                        else
                        {
                                $target = $childs[count($childs) - 1]["obj_id"];
                        }
                }

                if ($tax_tree->isInTree($parent_id) && !$tax_tree->isInTree($a_node->getId()))
                {
                        $tax_tree->insertNode($a_node->getId(), $parent_id, $target);
                }
        }

        static function writeOrderNr($a_node_id, $a_order_nr)
        {
                global $ilDB;
                
                $ilDB->manipulate("UPDATE tax_node SET ".
                        " order_nr = ".$ilDB->quote($a_order_nr, "integer").
                        " WHERE obj_id = ".$ilDB->quote($a_node_id, "integer")
                        );
        }
        
        static function writeTitle($a_node_id, $a_title)
        {
                global $ilDB;
                
                $ilDB->manipulate("UPDATE tax_node SET ".
                        " title = ".$ilDB->quote($a_title, "text").
                        " WHERE obj_id = ".$ilDB->quote($a_node_id, "integer")
                        );
        }
        
        static function getNextOrderNr($a_tax_id, $a_parent_id)
        {
                include_once("./Services/Taxonomy/classes/class.ilTaxonomyTree.php");
                $tax_tree = new ilTaxonomyTree($a_tax_id);
                if ($a_parent_id == 0)
                {
                        $a_parent_id = $tax_tree->readRootId();
                }
                $childs = $tax_tree->getChilds($a_parent_id);
                $max = 0;

                foreach ($childs as $c)
                {
                        if ($c["order_nr"] > $max)
                        {
                                $max = $c["order_nr"] + 10;
                        }
                }

                return $max;
        }
        
        static function fixOrderNumbers($a_tax_id, $a_parent_id)
        {
                include_once("./Services/Taxonomy/classes/class.ilTaxonomyTree.php");
                $tax_tree = new ilTaxonomyTree($a_tax_id);
                if ($a_parent_id == 0)
                {
                        $a_parent_id = $tax_tree->readRootId();
                }
                $childs = $tax_tree->getChilds($a_parent_id);
                $childs = ilUtil::sortArray($childs, "order_nr", "asc", true);

                $cnt = 10;
                foreach ($childs as $c)
                {
                        self::writeOrderNr($c["child"], $cnt);
                        $cnt += 10;
                }
        }
        
}
?>