Collaboration diagram for ilObjectDataCache:

Public Member Functions
	ilObjectDataCache ()

	deleteCachedEntry ($a_obj_id)

	lookupObjId ($a_ref_id)

	lookupTitle ($a_obj_id)

	lookupType ($a_obj_id)

	lookupOwner ($a_obj_id)

	lookupDescription ($a_obj_id)

	lookupLastUpdate ($a_obj_id)

	__isReferenceCached ($a_ref_id)
	checks whether an reference id is already in cache or not More...

	__isObjectCached ($a_obj_id)
	checks whether an object is aleady in cache or not More...

	__storeReference ($a_ref_id)
	Stores Reference in cache. More...

	__storeObjectData ($a_obj_id, $a_lang="")
	Stores object data in cache. More...

	isTranslatedDescription ($a_obj_id)

	preloadObjectCache ($a_obj_ids, $a_lang="")
	Stores object data in cache. More...

	preloadTranslations ($a_obj_ids, $a_lang)
	Preload translation informations. More...

	preloadReferenceCache ($a_ref_ids, $a_incl_obj=true)

Data Fields
	$db = null

	$reference_cache = array()

	$object_data_cache = array()

	$description_trans = array()

Detailed Description

class ilObjectDataCache

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

Version: $Id$

This class caches some properties of the object_data table. Like title description owner obj_id

Definition at line 13 of file class.ilObjectDataCache.php.

Member Function Documentation

◆ __isObjectCached()

ilObjectDataCache::__isObjectCached ( $a_obj_id )

checks whether an object is aleady in cache or not

@access private

Parameters

int $a_obj_id object id

Returns: boolean

Definition at line 120 of file class.ilObjectDataCache.php.

        {
                static $cached = 0;
                static $not_cached = 0;
                        
 
                if(@$this->object_data_cache[$a_obj_id])
                {
                        #echo "Object ". ++$cached ."cached<br>";
                        return true;
                }
                #echo "Object ". ++$not_cached ." not cached<br>";
                return false;
        }

Referenced by lookupDescription(), lookupLastUpdate(), lookupOwner(), lookupTitle(), and lookupType().

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◆ __isReferenceCached()

ilObjectDataCache::__isReferenceCached ( $a_ref_id )

checks whether an reference id is already in cache or not

@access private

Parameters

int $a_ref_id reference id

Returns: boolean

Definition at line 97 of file class.ilObjectDataCache.php.

        {
                #return false;
                #static $cached = 0;
                #static $not_cached = 0;
 
                if(@$this->reference_cache[$a_ref_id])
                {
                        #echo "Reference ". ++$cached ."cached<br>";
                        return true;
                }
                #echo "Reference ". ++$not_cached ." not cached<br>";
                return false;
                
        }

Referenced by lookupObjId().

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◆ __storeObjectData()

ilObjectDataCache::__storeObjectData	(	$a_obj_id,
		$a_lang = `""`
	)

Stores object data in cache.

@access private

Parameters

int $a_obj_id object id

Returns: bool

Definition at line 165 of file class.ilObjectDataCache.php.

        {
                global $ilDB, $objDefinition, $ilUser;
                
                if (is_object($ilUser) && $a_lang == "")
                {
                        $a_lang = $ilUser->getLanguage();
                }
 
                $query = "SELECT * FROM object_data WHERE obj_id = ".
                        $ilDB->quote($a_obj_id ,'integer');
                $res = $this->db->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        $this->object_data_cache[$a_obj_id]['title'] = $row->title;
                        $this->object_data_cache[$a_obj_id]['description'] = $row->description;
                        $this->object_data_cache[$a_obj_id]['type'] = $row->type;
                        $this->object_data_cache[$a_obj_id]['owner'] = $row->owner;
                        $this->object_data_cache[$a_obj_id]['last_update'] = $row->last_update;
                        
                        if (is_object($objDefinition))
                        {
                                $translation_type = $objDefinition->getTranslationType($row->type);
                        }
 
                        if ($translation_type == "db")
                        {
                                if (!$this->trans_loaded[$a_obj_id])
                                {
                                        $q = "SELECT title,description FROM object_translation ".
                                                 "WHERE obj_id = ".$ilDB->quote($a_obj_id,'integer')." ".
                                                 "AND lang_code = ".$ilDB->quote($a_lang,'text')." ".
                                                 "AND NOT lang_default = 1";
                                        $r = $ilDB->query($q);
 
                                        $row = $r->fetchRow(DB_FETCHMODE_OBJECT);
                                        if ($row)
                                        {
                                                $this->object_data_cache[$a_obj_id]['title'] = $row->title;
                                                $this->object_data_cache[$a_obj_id]['description'] = $row->description;
                                                $this->description_trans[] = $a_obj_id;
                                        }
                                        $this->trans_loaded[$a_obj_id] = true;
                                }
                        }
                }
                
                return true;
        }

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

Referenced by lookupDescription(), lookupLastUpdate(), lookupObjId(), lookupOwner(), lookupTitle(), and lookupType().

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◆ __storeReference()

ilObjectDataCache::__storeReference ( $a_ref_id )

Stores Reference in cache.

Maybe it could be useful to find all references of that object andd store them also in the cache. But this would be an extra query.

@access private

Parameters

int $a_ref_id reference id

Returns: int $obj_id

Definition at line 145 of file class.ilObjectDataCache.php.

        {
                global $ilDB;
                
                $query = "SELECT obj_id FROM object_reference WHERE ref_id = ".$ilDB->quote($a_ref_id,'integer');
                $res = $this->db->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_ASSOC))
                {
                        $this->reference_cache[$a_ref_id] = $row['obj_id'];
                }
                return (int) @$this->reference_cache[$a_ref_id];
        }

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

Referenced by lookupObjId().

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◆ deleteCachedEntry()

ilObjectDataCache::deleteCachedEntry ( $a_obj_id )

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

        {
                unset($this->object_data_cache[$a_obj_id]);
        }

◆ ilObjectDataCache()

ilObjectDataCache::ilObjectDataCache ( )

Definition at line 20 of file class.ilObjectDataCache.php.

        {
                global $ilDB;
 
                $this->db =& $ilDB;
        }

References $ilDB.

◆ isTranslatedDescription()

ilObjectDataCache::isTranslatedDescription ( $a_obj_id )

Definition at line 215 of file class.ilObjectDataCache.php.

        {
                return (is_array($this->description_trans) &&
                        in_array($a_obj_id, $this->description_trans));
        }

◆ lookupDescription()

ilObjectDataCache::lookupDescription ( $a_obj_id )

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

        {
                if(!$this->__isObjectCached($a_obj_id))
                {
                        $this->__storeObjectData($a_obj_id);
                }
                return @$this->object_data_cache[$a_obj_id]['description'];
        }

References __isObjectCached(), and __storeObjectData().

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◆ lookupLastUpdate()

ilObjectDataCache::lookupLastUpdate ( $a_obj_id )

Definition at line 80 of file class.ilObjectDataCache.php.

        {
                if(!$this->__isObjectCached($a_obj_id))
                {
                        $this->__storeObjectData($a_obj_id);
                }
                return @$this->object_data_cache[$a_obj_id]['last_update'];
        }

References __isObjectCached(), and __storeObjectData().

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◆ lookupObjId()

ilObjectDataCache::lookupObjId ( $a_ref_id )

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

        {
                if(!$this->__isReferenceCached($a_ref_id))
                {
//echo"-objidmissed-$a_ref_id-";
                        $obj_id = $this->__storeReference($a_ref_id);
                        $this->__storeObjectData($obj_id);
                }
                return (int) @$this->reference_cache[$a_ref_id];
        }

References __isReferenceCached(), __storeObjectData(), and __storeReference().

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◆ lookupOwner()

ilObjectDataCache::lookupOwner ( $a_obj_id )

Definition at line 62 of file class.ilObjectDataCache.php.

        {
                if(!$this->__isObjectCached($a_obj_id))
                {
                        $this->__storeObjectData($a_obj_id);
                }
                return @$this->object_data_cache[$a_obj_id]['owner'];
        }

References __isObjectCached(), and __storeObjectData().

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◆ lookupTitle()

ilObjectDataCache::lookupTitle ( $a_obj_id )

Definition at line 43 of file class.ilObjectDataCache.php.

        {
                if(!$this->__isObjectCached($a_obj_id))
                {
                        $this->__storeObjectData($a_obj_id);
                }
                return @$this->object_data_cache[$a_obj_id]['title'];
        }

References __isObjectCached(), and __storeObjectData().

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◆ lookupType()

ilObjectDataCache::lookupType ( $a_obj_id )

Definition at line 52 of file class.ilObjectDataCache.php.

        {
                if(!$this->__isObjectCached($a_obj_id))
                {
//echo"-typemissed-$a_obj_id-";
                        $this->__storeObjectData($a_obj_id);
                }
                return @$this->object_data_cache[$a_obj_id]['type'];
        }

References __isObjectCached(), and __storeObjectData().

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◆ preloadObjectCache()

ilObjectDataCache::preloadObjectCache	(	$a_obj_ids,
		$a_lang = `""`
	)

Stores object data in cache.

@access private

Parameters

int $a_obj_id object id

Returns: bool

Definition at line 228 of file class.ilObjectDataCache.php.

        {
                global $ilDB, $objDefinition, $ilUser, $tree;
                
                if (is_object($ilUser) && $a_lang == "")
                {
                        $a_lang = $ilUser->getLanguage();
                }
//echo "<br>-preloading-"; var_dump($a_obj_ids);
                if (!is_array($a_obj_ids)) return;
                if (count($a_obj_ids) == 0) return;
                
                
                $query = "SELECT * FROM object_data ".
                        "WHERE ".$ilDB->in('obj_id',$a_obj_ids,false,'integer');
                $res = $ilDB->query($query);
                $db_trans = array();
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
//echo "<br>store_obj-".$row->obj_id."-".$row->type."-".$row->title."-";
 
                        // this if fixes #9960
                        if (!$this->trans_loaded[$row->obj_id])
                        {
                                $this->object_data_cache[$row->obj_id]['title'] = $row->title;
                                $this->object_data_cache[$row->obj_id]['description'] = $row->description;
                        }
                        $this->object_data_cache[$row->obj_id]['type'] = $row->type;
                        $this->object_data_cache[$row->obj_id]['owner'] = $row->owner;
                        $this->object_data_cache[$row->obj_id]['last_update'] = $row->last_update;
 
                        if (is_object($objDefinition))
                        {
                                $translation_type = $objDefinition->getTranslationType($row->type);
                        }
 
                        if ($translation_type == "db")
                        {
                                $db_trans[$row->obj_id] = $row->obj_id;
                        }
                }
                if (count($db_trans) > 0)
                {
                        $this->preloadTranslations($db_trans, $a_lang);
                }
        }

References $ilDB, $ilUser, $query, $res, $row, DB_FETCHMODE_OBJECT, and preloadTranslations().

Referenced by preloadReferenceCache().

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◆ preloadReferenceCache()

ilObjectDataCache::preloadReferenceCache	(	$a_ref_ids,
		$a_incl_obj = `true`
	)

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

        {
                global $ilDB;
                
                if (!is_array($a_ref_ids)) return;
                if (count($a_ref_ids) == 0) return;
                
                $query = "SELECT ref_id, obj_id FROM object_reference ".
                        "WHERE ".$ilDB->in('ref_id',$a_ref_ids,false,'integer');
                $res = $ilDB->query($query);
                
                $obj_ids = array();
                while($row = $res->fetchRow(DB_FETCHMODE_ASSOC))
                {
                        $this->reference_cache[$row['ref_id']] = $row['obj_id'];
//echo "<br>store_ref-".$row['ref_id']."-".$row['obj_id']."-";
                        $obj_ids[] = $row['obj_id'];
                }
                if ($a_incl_obj)
                {
                        $this->preloadObjectCache($obj_ids);
                }
        }

References $ilDB, $query, $res, $row, DB_FETCHMODE_ASSOC, and preloadObjectCache().

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◆ preloadTranslations()

ilObjectDataCache::preloadTranslations	(	$a_obj_ids,
		$a_lang
	)

Preload translation informations.

Parameters

array $a_obj_ids array of object ids

Definition at line 280 of file class.ilObjectDataCache.php.

        {
                global $ilDB, $tree;
 
                $obj_ids = array();
                foreach ($a_obj_ids as $id)
                {
                        // do not load an id more than one time
                        if (!$this->trans_loaded[$id])
                        {
                                $obj_ids[] = $id;
                                $this->trans_loaded[$id] = true;
                        }
                }
                if (count($obj_ids) > 0)
                {
                        $q = "SELECT obj_id, title, description FROM object_translation ".
                                 "WHERE ".$ilDB->in('obj_id', $obj_ids, false, 'integer')." ".
                                 "AND lang_code = ".$ilDB->quote($a_lang, 'text')." ".
                                 "AND NOT lang_default = 1";
                        $r = $ilDB->query($q);
                        while ($row2 = $r->fetchRow(DB_FETCHMODE_OBJECT))
                        {
                                $this->object_data_cache[$row2->obj_id]['title'] = $row2->title;
                                $this->object_data_cache[$row2->obj_id]['description'] = $row2->description;
                                $this->description_trans[] = $row2->obj_id;
                        }
                }
        }