+
+ // 'update' won't write key columns, so we have to do it ourselves.
+ public function updateKeys(&$orig)
+ {
+ if (!$orig instanceof $this) {
+ throw new ServerException('Tried updating a DataObject with a different class than itself.');
+ }
+
+ $this->_connect();
+ $parts = array();
+ foreach ($this->keys() as $k) {
+ if (strcmp($this->$k, $orig->$k) != 0) {
+ $parts[] = $k . ' = ' . $this->_quote($this->$k);
+ }
+ }
+ if (count($parts) == 0) {
+ // No changes
+ return true;
+ }
+ $toupdate = implode(', ', $parts);
+
+ $table = common_database_tablename($this->tableName());
+ $qry = 'UPDATE ' . $table . ' SET ' . $toupdate .
+ ' WHERE id = ' . $this->getID();
+ $orig->decache();
+ $result = $this->query($qry);
+ if ($result !== false) {
+ $this->encache();
+ }
+ return $result;
+ }