001// Copyright 2007, 2012 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 org.apache.tapestry5.ComponentResources;
018
019/**
020 * A kind of callback that can easily be injected into a transformed class to perform complex work.
021 * <p/>
022 * These callbacks are often injected into a transformed component class. Bear in mind that such
023 * callbacks must be <em>threadsafe</em>, since every instance of such a class will share a single instance of the
024 * operation.
025 *
026 * @deprecated In Tapestry 5.4; use {@link org.apache.tapestry5.plastic.MethodAdvice} and other parts of the new (in 5.3) plastic library.
027 */
028public interface ComponentResourcesOperation
029{
030    /**
031     * Perform some operation that requires the components' resources.
032     */
033    void perform(ComponentResources resources);
034}