001// Copyright 2008 The Apache Software Foundation
002//
003// Licensed under the Apache License, Version 2.0 (the "License");
004// you may not use this file except in compliance with the License.
005// You may obtain a copy of the License at
006//
007//     http://www.apache.org/licenses/LICENSE-2.0
008//
009// Unless required by applicable law or agreed to in writing, software
010// distributed under the License is distributed on an "AS IS" BASIS,
011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012// See the License for the specific language governing permissions and
013// limitations under the License.
014
015package org.apache.tapestry5.beanmodel.internal.services;
016
017import java.lang.annotation.*;
018
019/**
020 * Special annotation that is applied to literal {@link org.apache.tapestry5.beanmodel.PropertyConduit}s, to inform {@link
021 * org.apache.tapestry5.internal.bindings.PropBinding} that the value is, in fact, invariant.
022 */
023@Target({ElementType.PARAMETER, ElementType.FIELD})
024@Retention(RetentionPolicy.RUNTIME)
025@Documented
026public @interface Invariant
027{
028}