    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.internal.services;
    016
    017import java.lang.annotation.*;
    018
    019/**
    020 * Special annotation that is applied to literal {@link org.apache.tapestry5.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}