Collaboration diagram for ilObjectDataCache:

Public Member Functions
	__construct ()

	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.

Constructor & Destructor Documentation

◆ __construct()

ilObjectDataCache::__construct ( )

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

References $DIC, and $ilDB.

     {
         global $DIC;
 
         $ilDB = $DIC->database();
 
         $this->db = $ilDB;
     }

Member Function Documentation

◆ __isObjectCached()

ilObjectDataCache::__isObjectCached ( $a_obj_id )

checks whether an object is aleady in cache or not

private

Parameters

int $a_obj_id object id

Returns: boolean

Definition at line 114 of file class.ilObjectDataCache.php.

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

     {
         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;
     }

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◆ __isReferenceCached()

ilObjectDataCache::__isReferenceCached ( $a_ref_id )

checks whether an reference id is already in cache or not

private

Parameters

int $a_ref_id reference id

Returns: boolean

Definition at line 93 of file class.ilObjectDataCache.php.

Referenced by lookupObjId().

     {
         #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;
     }

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◆ __storeObjectData()

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

Stores object data in cache.

private

Parameters

int $a_obj_id object id

Returns: bool

Definition at line 157 of file class.ilObjectDataCache.php.

References $db, $DIC, $ilDB, $ilUser, $query, $r, $res, $row, and ilDBConstants\FETCHMODE_OBJECT.

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

     {
         global $DIC;
 
         $ilDB = $this->db;
         $objDefinition = $DIC["objDefinition"];
         $ilUser = $DIC["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(ilDBConstants::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 = $r->fetchRow(ilDBConstants::FETCHMODE_OBJECT);
                     if ($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;
     }

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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.

private

Parameters

int $a_ref_id reference id

Returns: int $obj_id

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

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

Referenced by lookupObjId().

     {
         $ilDB = $this->db;
         
         $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(ilDBConstants::FETCHMODE_ASSOC)) {
             $this->reference_cache[$a_ref_id] = $row['obj_id'];
         }
         return (int) @$this->reference_cache[$a_ref_id];
     }

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◆ deleteCachedEntry()

ilObjectDataCache::deleteCachedEntry ( $a_obj_id )

Definition at line 29 of file class.ilObjectDataCache.php.

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

◆ isTranslatedDescription()

ilObjectDataCache::isTranslatedDescription ( $a_obj_id )

Definition at line 205 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 69 of file class.ilObjectDataCache.php.

References __isObjectCached(), and __storeObjectData().

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

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◆ lookupLastUpdate()

ilObjectDataCache::lookupLastUpdate ( $a_obj_id )

Definition at line 77 of file class.ilObjectDataCache.php.

References __isObjectCached(), and __storeObjectData().

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

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◆ lookupObjId()

ilObjectDataCache::lookupObjId ( $a_ref_id )

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

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

     {
         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];
     }

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◆ lookupOwner()

ilObjectDataCache::lookupOwner ( $a_obj_id )

Definition at line 61 of file class.ilObjectDataCache.php.

References __isObjectCached(), and __storeObjectData().

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

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◆ lookupTitle()

ilObjectDataCache::lookupTitle ( $a_obj_id )

Definition at line 44 of file class.ilObjectDataCache.php.

References __isObjectCached(), and __storeObjectData().

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

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◆ lookupType()

ilObjectDataCache::lookupType ( $a_obj_id )

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

References __isObjectCached(), and __storeObjectData().

     {
         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'];
     }

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◆ preloadObjectCache()

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

Stores object data in cache.

private

Parameters

int $a_obj_id object id

Returns: bool

Definition at line 218 of file class.ilObjectDataCache.php.

References $db, $DIC, $ilDB, $ilUser, $query, $res, $row, array, ilDBConstants\FETCHMODE_OBJECT, and preloadTranslations().

Referenced by preloadReferenceCache().

     {
         global $DIC;
 
         $ilDB = $this->db;
         $objDefinition = $DIC["objDefinition"];
         $ilUser = $DIC["ilUser"];
 
         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 = $res->fetchRow(ilDBConstants::FETCHMODE_OBJECT)) {
             //echo "<br>store_obj-".$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);
         }
     }

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◆ preloadReferenceCache()

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

Definition at line 298 of file class.ilObjectDataCache.php.

References $db, $ilDB, $query, $res, $row, array, ilDBConstants\FETCHMODE_ASSOC, and preloadObjectCache().

     {
         $ilDB = $this->db;
         
         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(ilDBConstants::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);
         }
     }

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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 272 of file class.ilObjectDataCache.php.

References $db, $id, $ilDB, $r, array, and ilDBConstants\FETCHMODE_OBJECT.

Referenced by preloadObjectCache().

     {
         $ilDB = $this->db;
 
         $obj_ids = array();
         foreach ($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(ilDBConstants::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;
             }
         }
     }