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.devutils.stateless;
018
019import java.lang.annotation.Documented;
020import java.lang.annotation.ElementType;
021import java.lang.annotation.Inherited;
022import java.lang.annotation.Retention;
023import java.lang.annotation.RetentionPolicy;
024import java.lang.annotation.Target;
025
026/**
027 * Annotation for wicket components that you want to be sure remain stateless during the development
028 * cycle. Can be attached to pages and components.
029 * 
030 * <b>Note:</b> this annotation <u><i>does not</i></u> make the component stateless or affect it's
031 * statelessness in any way. This annotation should be used in combination with
032 * <tt>StatelessChecker</tt> to give you runtime warning if you inadvertantly made a page or
033 * component stateful.
034 * 
035 * @author Marat Radchenko
036 * @see StatelessChecker
037 */
038@Documented
039@Retention(RetentionPolicy.RUNTIME)
040@Target(ElementType.TYPE)
041@Inherited
042public @interface StatelessComponent {
043
044        /**
045         * Can be set to <code>false</code> to disable stateless (this is useful if stateful component
046         * inherits from stateless one).
047         */
048        boolean enabled() default true;
049}