/**
* Performs actual purging of locks.
*
* Iterates over {@link $lockProperties} and purges all locks of which the
* tokens have been collected in {$locksToPurge}.
*
* @return void
*
* @throws ezcWebdavLockAdministrationException
* in case purging of a lock failed.
*/
protected function performPurge()
{
foreach ($this->lockProperties as $path => $lockDiscoveryProp) {
$removeIds = array();
foreach ($lockDiscoveryProp->activeLock as $id => $activeLock) {
if (isset($this->locksToPurge[(string) $activeLock->token])) {
$removeIds[] = $id;
}
}
if ($removeIds !== array()) {
foreach ($removeIds as $id) {
$lockDiscoveryProp->activeLock->offsetUnset($id);
}
$propPatchReq = new ezcWebdavPropPatchRequest($path);
$propPatchReq->updates = new ezcWebdavFlaggedPropertyStorage();
$propPatchReq->updates->attach($lockDiscoveryProp, ezcWebdavPropPatchRequest::SET);
$propPatchReq->validateHeaders();
$propPatchRes = $this->backend->propPatch($propPatchReq);
if (!$propPatchRes instanceof ezcWebdavPropPatchResponse) {
throw new ezcWebdavLockAdministrationException("PROPPATCH to remove timedout lock failed for '{$path}'.", $propPatchRes);
}
}
}
}
