+
+ function delete() {
+ $this->blowCaches();
+ $this->blowFavesCache();
+ parent::delete();
+ }
+
+ function saveTags() {
+ /* extract all #hastags */
+ $count = preg_match_all('/(?:^|\s)#([A-Za-z0-9_\-\.]{1,64})/', strtolower($this->content), $match);
+ if (!$count) {
+ return true;
+ }
+
+ /* elide characters we don't want in the tag */
+ $match[1] = str_replace(array('-', '_', '.'), '', $match[1]);
+
+ /* Add them to the database */
+ foreach(array_unique($match[1]) as $hashtag) {
+ $tag = DB_DataObject::factory('Notice_tag');
+ $tag->notice_id = $this->id;
+ $tag->tag = $hashtag;
+ $tag->created = $this->created;
+ $id = $tag->insert();
+ if (!$id) {
+ $last_error = PEAR::getStaticProperty('DB_DataObject','lastError');
+ common_log(LOG_ERR, 'DB error inserting hashtag: ' . $last_error->message);
+ common_server_error(sprintf(_('DB error inserting hashtag: %s'), $last_error->message));
+ return;
+ }
+ }
+ return true;
+ }
+
+ static function saveNew($profile_id, $content, $source=NULL, $is_local=1, $reply_to=NULL, $uri=NULL) {
+
+ $notice = new Notice();
+ $notice->profile_id = $profile_id;
+ $notice->is_local = $is_local;
+ $notice->reply_to = $reply_to;
+ $notice->created = common_sql_now();
+ $notice->content = $content;
+ $notice->rendered = common_render_content($notice->content, $notice);
+ $notice->source = $source;
+ $notice->uri = $uri;
+
+ $id = $notice->insert();
+
+ if (!$id) {
+ common_log_db_error($notice, 'INSERT', __FILE__);
+ return _('Problem saving notice.');
+ }
+
+ # Update the URI after the notice is in the database
+ if (!$uri) {
+ $orig = clone($notice);
+ $notice->uri = common_notice_uri($notice);
+
+ if (!$notice->update($orig)) {
+ common_log_db_error($notice, 'UPDATE', __FILE__);
+ return _('Problem saving notice.');
+ }
+ }
+
+ # XXX: do we need to change this for remote users?
+
+ common_save_replies($notice);
+ $notice->saveTags();
+
+ # Clear the cache for subscribed users, so they'll update at next request
+ # XXX: someone clever could prepend instead of clearing the cache
+
+ if (common_config('memcached', 'enabled')) {
+ $notice->blowCaches();
+ }
+
+ return $notice;
+ }
+
+ function blowCaches() {
+ $this->blowSubsCache();
+ $this->blowNoticeCache();
+ $this->blowRepliesCache();
+ $this->blowPublicCache();
+ }
+
+ function blowSubsCache() {
+ $cache = common_memcache();
+ if ($cache) {
+ $user = new User();
+
+ $user->query('SELECT id ' .
+ 'FROM user JOIN subscription ON user.id = subscription.subscriber ' .
+ 'WHERE subscription.subscribed = ' . $this->profile_id);
+
+ while ($user->fetch()) {
+ $cache->delete(common_cache_key('user:notices_with_friends:' . $user->id));
+ }
+
+ $user->free();
+ unset($user);
+ }
+ }
+
+ function blowNoticeCache() {
+ if ($this->is_local) {
+ $cache = common_memcache();
+ if ($cache) {
+ $cache->delete(common_cache_key('user:notices:'.$this->profile_id));
+ }
+ }
+ }
+
+ function blowRepliesCache() {
+ $cache = common_memcache();
+ if ($cache) {
+ $reply = new Reply();
+ $reply->notice_id = $this->id;
+ if ($reply->find()) {
+ while ($reply->fetch()) {
+ $cache->delete(common_cache_key('user:replies:'.$reply->profile_id));
+ }
+ }
+ $reply->free();
+ unset($reply);
+ }
+ }
+
+ function blowPublicCache() {
+ if ($this->is_local) {
+ $cache = common_memcache();
+ if ($cache) {
+ $cache->delete(common_cache_key('public'));
+ }
+ }
+ }
+
+ function blowFavesCache() {
+ $cache = common_memcache();
+ if ($cache) {
+ $fave = new Fave();
+ $fave->notice_id = $this->id;
+ if ($fave->find()) {
+ while ($fave->fetch()) {
+ $cache->delete(common_cache_key('user:faves:'.$fave->user_id));
+ }
+ }
+ $fave->free();
+ unset($fave);
+ }
+ }
+
+ static function getStream($qry, $cachekey, $offset=0, $limit=20) {
+
+ if (common_config('memcached', 'enabled')) {
+ return Notice::getCachedStream($qry, $cachekey, $offset, $limit);
+ } else {
+ return Notice::getStreamDirect($qry, $offset, $limit);
+ }
+
+ }
+
+ static function getStreamDirect($qry, $offset, $limit) {
+
+ $qry .= ' ORDER BY notice.created DESC, notice.id DESC ';
+
+ if(common_config('db','type')=='pgsql') {
+ $qry .= ' LIMIT ' . $limit . ' OFFSET ' . $offset;
+ } else {
+ $qry .= ' LIMIT ' . $offset . ', ' . $limit;
+ }
+
+ $notice = new Notice();
+
+ $notice->query($qry);
+
+ return $notice;
+ }
+
+ static function getCachedStream($qry, $cachekey, $offset, $limit) {
+
+ # If outside our cache window, just go to the DB
+
+ if ($offset + $limit > NOTICE_CACHE_WINDOW) {
+ return Notice::getStreamDirect($qry, $offset, $limit);
+ }
+
+ # Get the cache; if we can't, just go to the DB
+
+ $cache = common_memcache();
+
+
+ if (!$cache) {
+ return Notice::getStreamDirect($qry, $offset, $limit);
+ }
+
+ # Get the notices out of the cache
+
+ $notices = $cache->get(common_cache_key($cachekey));
+
+ # On a cache hit, return a DB-object-like wrapper
+
+ if ($notices !== FALSE) {
+ $wrapper = new NoticeWrapper(array_slice($notices, $offset, $limit));
+ return $wrapper;
+ }
+
+ # Otherwise, get the full cache window out of the DB
+
+ $notice = Notice::getStreamDirect($qry, 0, NOTICE_CACHE_WINDOW);
+
+ # If there are no hits, just return the value
+
+ if (!$notice) {
+ return $notice;
+ }
+
+ # Pack results into an array
+
+ $notices = array();
+
+ while ($notice->fetch()) {
+ $notices[] = clone($notice);
+ }
+
+ # Store the array in the cache for next time
+
+ $result = $cache->set(common_cache_key($cachekey), $notices);
+
+ # return a wrapper of the array for use now
+
+ $wrapper = new NoticeWrapper(array_slice($notices, $offset, $limit));
+
+ return $wrapper;
+ }
+
+ function publicStream($offset=0, $limit=20) {
+
+ $qry = 'SELECT * FROM notice ';
+
+ if (common_config('public', 'localonly')) {
+ $qry .= ' WHERE is_local = 1 ';
+ }
+
+ return Notice::getStream($qry,
+ 'public',
+ $offset, $limit);
+ }