/**
* Clear the bucket
*
* @return int Returns the number of deleted keys
* @throws ExceptionCollection
*/
public function clear()
{
$that = $this;
$batch = DeleteObjectsBatch::factory($this->client, $this->bucket, $this->mfa);
$batch = new NotifyingBatch($batch, function ($items) use($that) {
$that->dispatch(ClearBucket::AFTER_DELETE, array('keys' => $items));
});
$batch = new FlushingBatch(new ExceptionBufferingBatch($batch), 1000);
// Let any listeners know that the bucket is about to be cleared
$this->dispatch(self::BEFORE_CLEAR, array('iterator' => $this->getIterator(), 'batch' => $batch, 'mfa' => $this->mfa));
$deleted = 0;
foreach ($this->getIterator() as $object) {
if (isset($object['VersionId'])) {
$versionId = $object['VersionId'] == 'null' ? null : $object['VersionId'];
} else {
$versionId = null;
}
$batch->addKey($object['Key'], $versionId);
$deleted++;
}
$batch->flush();
// If any errors were encountered, then throw an ExceptionCollection
if (count($batch->getExceptions())) {
$e = new ExceptionCollection();
foreach ($batch->getExceptions() as $exception) {
$e->add($exception->getPrevious());
}
throw $e;
}
// Let any listeners know that the bucket was cleared
$this->dispatch(self::AFTER_CLEAR, array('deleted' => $deleted));
return $deleted;
}
