PingablePooledConnection connection = (PingablePooledConnection)super.getPooledConnection(queue);
FBPooledConnection connection = (FBPooledConnection)super.getPooledConnection(queue);
	protected synchronized PooledObject getPooledConnection(        PooledConnectionQueue queue) throws SQLException    {		PingablePooledConnection connection =             (PingablePooledConnection)super.getPooledConnection(queue);        connection.addConnectionEventListener(this);        return connection;	}