Horde_Kolab_Storage_Cache::deleteAttachment PHP Method

    public function deleteAttachment($data_id, $obid, $attachment_id)
    {
        return $this->_horde_cache->expire($this->_getAttachmentId($data_id, $obid, $attachment_id));
    }

 /**
  * Stores the objects list in the cache.
  *
  * @param array $object                            The object data to store.
  * @param Horde_Kolab_Storage_Folder_Stamp $stamp  The current stamp.
  * @param string $version                          The format version of
  *                                                 the provided data.
  * @param array $delete                            Backend IDs that were
  *                                                 removed.
  */
 public function store(array $objects, Horde_Kolab_Storage_Folder_Stamp $stamp, $version, array $delete = array())
 {
     $this->_load();
     if (!empty($delete)) {
         foreach ($delete as $obid => $object_id) {
             $object = $this->_data[self::OBJECTS][$object_id];
             if (!empty($object['_attachments'])) {
                 // @todo clean up attachment formatting mess.
                 if (isset($object['_attachments']['id'])) {
                     $ids = $object['_attachments']['id'];
                 } else {
                     $ids = array_keys($object['_attachments']);
                 }
                 foreach ($ids as $id) {
                     $this->_cache->deleteAttachment($this->getDataId(), $obid, $id);
                 }
             }
             unset($this->_data[self::O2B][$object_id]);
             unset($this->_data[self::OBJECTS][$object_id]);
             unset($this->_data[self::B2O][$obid]);
         }
     }
     foreach ($objects as $obid => $object) {
         if (!empty($object) && isset($object['uid'])) {
             if (isset($this->_data[self::O2B][$object['uid']])) {
                 if (!isset($this->_data[self::DUPLICATES][$object['uid']])) {
                     $this->_data[self::DUPLICATES][$object['uid']][] = $this->_data[self::O2B][$object['uid']];
                 }
                 $this->_data[self::DUPLICATES][$object['uid']][] = $obid;
             }
             $this->_data[self::B2O][$obid] = $object['uid'];
             $this->_data[self::O2B][$object['uid']] = $obid;
             if (isset($object['_attachments'])) {
                 $attachments = array();
                 foreach ($object['_attachments'] as $id => $attachment) {
                     $attachments['id'][] = $id;
                     if (isset($attachment['name'])) {
                         $attachments['name'][$attachment['name']][] = $id;
                     }
                     if (isset($attachment['type'])) {
                         $attachments['type'][$attachment['type']][] = $id;
                     }
                     $this->_cache->storeAttachment($this->getDataId(), $obid, $id, $attachment['content']);
                 }
                 $object['_attachments'] = $attachments;
             }
             $this->_data[self::OBJECTS][$object['uid']] = $object;
         } else {
             $this->_data[self::B2O][$obid] = false;
             $this->_data[self::ERRORS][] = $obid;
         }
     }
     $this->_data[self::QUERIES] = array();
     $this->_data[self::STAMP] = serialize($stamp);
     $this->_data[self::DATA_VERSION] = $version;
     $this->_data[self::VERSION] = self::FORMAT_VERSION;
     $this->_data[self::ID] = serialize($this->_parameters);
     $this->_data[self::SYNC] = time();
 }