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
	__isObjectCached ($a_obj_id)
	checks whether an object is aleady in cache or not
	__storeReference ($a_ref_id)
	Stores Reference in cache.
	__storeObjectData ($a_obj_id)
	Stores object data in cache.
Data Fields
	$db = null
	$reference_cache = array()
	$object_data_cache = array()

Detailed Description

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

Member Function Documentation

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 138 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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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 115 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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ilObjectDataCache::__storeObjectData ( $ a_obj_id )

Stores object data in cache.

private

Parameters:

int

$a_obj_id object id

Returns:: bool

Definition at line 183 of file class.ilObjectDataCache.php.

References $query, $res, and $row.

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

        {
                $query = "SELECT * FROM object_data WHERE obj_id = '".$a_obj_id."'";
                $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;

                }
                return true;
        }

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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 163 of file class.ilObjectDataCache.php.

References $query, $res, and $row.

Referenced by lookupObjId().

        {
                global $ilDB;
                
                $query = "SELECT obj_id FROM object_reference WHERE ref_id = ".$ilDB->quote($a_ref_id);
                $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];
        }

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ilObjectDataCache::deleteCachedEntry ( $ a_obj_id )

Definition at line 47 of file class.ilObjectDataCache.php.

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

ilObjectDataCache::ilObjectDataCache ( )

Definition at line 40 of file class.ilObjectDataCache.php.

        {
                global $ilDB;

                $this->db =& $ilDB;
        }

ilObjectDataCache::lookupDescription ( $ a_obj_id )

Definition at line 89 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'];
        }