001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.wicket.model;
018
019import org.apache.wicket.util.io.IClusterable;
020
021/**
022 * Interface to logic for detaching transient information from a detachable model. Detachable models
023 * are desirable because they reduce the amount of state required by a model, which makes the model
024 * cheaper to replicate in a clustered environment.
025 * 
026 * @author Jonathan Locke
027 */
028public interface IDetachable extends IClusterable
029{
030        /**
031         * Detaches model after use. This is generally used to null out transient references that can be
032         * re-attached later.
033         */
034        void detach();
035}