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BUGFIX: Changes to DataObject::get_one() caching to try and fix segfaults

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git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@60397 467b73ca-7a2a-4603-9d3b-597d59a354a9
This commit is contained in:
Sam Minnee 2008-08-11 05:31:13 +00:00
parent f9a1118b64
commit 9cb17cd5d1
1 changed files with 9 additions and 7 deletions
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16
core/model/DataObject.php
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@ -2069,7 +2069,11 @@ class DataObject extends ViewableData implements DataObjectInterface {
*/
public static function get_one($callerClass, $filter = "", $cache = true, $orderby = "") {
$sum = md5("{$filter}_{$orderby}");
if(!$cache || !isset(DataObject::$cache_get_one[$callerClass][$sum]) || !DataObject::$cache_get_one[$callerClass][$sum] || DataObject::$cache_get_one[$callerClass][$sum]->destroyed) {
// Flush destroyed items out of the cache
if($cache && isset(DataObject::$cache_get_one[$callerClass][$sum]) && DataObject::$cache_get_one[$callerClass][$sum] instanceof DataObject && DataObject::$cache_get_one[$callerClass][$sum]->destroyed) {
DataObject::$cache_get_one[$callerClass][$sum] = false;
}
if(!$cache || !isset(DataObject::$cache_get_one[$callerClass][$sum])) {
$item = singleton($callerClass)->instance_get_one($filter, $orderby);
if($cache) {
DataObject::$cache_get_one[$callerClass][$sum] = $item;
@ -2090,13 +2094,11 @@ class DataObject extends ViewableData implements DataObjectInterface {
return;
}
if(!self::$cache_get_one) return;
$classes = ClassInfo::ancestry($this->class);
foreach($classes as $class) {
// If someone else has called get_one and flushCache() is called, then that object will be destroyed.
// Not very friendly. We need a better way of dealing with PHP's garbage collection limitations.
// Until then, this line is being commented out.
// if(DataObject::$cache_get_one[$class]) foreach(DataObject::$cache_get_one[$class] as $obj) if($obj) $obj->destroy();
DataObject::$cache_get_one[$class] = null;
if(isset(self::$cache_get_one[$class])) unset(self::$cache_get_one[$class]);
}
$this->componentCache = array();
@ -2690,4 +2692,4 @@ class DataObject extends ViewableData implements DataObjectInterface {
}
?>
?>