/**
*
* "Removes" an item from the Children array, but by default not using PHP's
* unset() function becuase this will cause PHP to reset its internal array
* pointer and we need to maintain array state. Use the $force param to unset.
*
* @param int $childID
* @param boolean $force Invoke PHP's unset() function on the selected item.
* @return void
*/
public function removeChild($childID, $force = true)
{
if (isset($this->Children[$childID])) {
if ($force === true) {
unset($this->Children[$childID]);
} else {
$this->Children[$childID] = CacheableSiteTree::create();
// dummy
}
}
}
/**
*
* "Refreshes" (Removes and builds) a cache-entry for the object (page) given
* in $this->get_model().
*
* Note: If a cache entry already exists for a given object ID, it is removed
* and replaced.
*
* @param boolean $forceRemoval Whether to unset() children in {@link CacheableSiteTree::removeChild()}.
* @return boolean False if the underlying calls to {@link Zend_Cache_Core::load()}
* or {@link Zend_Cache_Core::save()} fail for any reason.
*/
public function refreshCachedPage($forceRemoval = false)
{
$model = $this->get_model();
$cacheableClass = 'CacheableSiteTree';
$classes = array_reverse(ClassInfo::ancestry(get_class($model)));
foreach ($classes as $class) {
if (class_exists($cachedDataClass = 'Cacheable' . $class)) {
$cacheableClass = $cachedDataClass;
break;
}
}
$cacheable = CacheableDataModelConvert::model2cacheable($model, $cacheableClass);
$frontend = $this->getCacheableFrontEnd();
$id = $this->getIdentifier();
if (!$this->_cached) {
if (!($cached = $frontend->load($id))) {
return false;
}
$this->_cached = $cached;
}
$site_map = $this->_cached->get_site_map();
if (isset($site_map[$cacheable->ID])) {
$parentCached = $site_map[$cacheable->ID]->getParent();
if ($parentCached && $parentCached->ID && isset($site_map[$parentCached->ID])) {
$site_map[$parentCached->ID]->removeChild($cacheable->ID, $forceRemoval);
}
$children = $site_map[$cacheable->ID]->getAllChildren();
if (count($children)) {
foreach ($children as $child) {
$cacheable->addChild($child);
$child->setParent($cacheable);
}
}
unset($site_map[$cacheable->ID]);
}
$root_elements = $this->_cached->get_root_elements();
if ($cacheable->ParentID) {
if (!isset($site_map[$cacheable->ParentID])) {
$parent = new CacheableSiteTree();
$parent->ID = $cacheable->ParentID;
$parent->addChild($cacheable);
$cacheable->setParent($parent);
$site_map[$cacheable->ParentID] = $parent;
} else {
$site_map[$cacheable->ParentID]->addChild($cacheable);
$cacheable->setParent($site_map[$cacheable->ParentID]);
}
if (isset($root_elements[$cacheable->ID])) {
unset($root_elements[$cacheable->ID]);
}
} else {
$root_elements[$cacheable->ID] = $cacheable;
}
$site_map[$cacheable->ID] = $cacheable;
$this->_cached->set_site_map($site_map);
$this->_cached->set_root_elements($root_elements);
$frontend->remove($id);
return $frontend->save($this->_cached, $id, array(self::get_default_cache_tag()));
}
