001// Licensed under the Apache License, Version 2.0 (the "License");
002// you may not use this file except in compliance with the License.
003// You may obtain a copy of the License at
004//
005//     http://www.apache.org/licenses/LICENSE-2.0
006//
007// Unless required by applicable law or agreed to in writing, software
008// distributed under the License is distributed on an "AS IS" BASIS,
009// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
010// See the License for the specific language governing permissions and
011// limitations under the License.
012
013package org.apache.tapestry5.internal.services;
014
015import org.apache.tapestry5.ComponentResources;
016
017/**
018 * A kind of callback that can easily be injected into a transformed class to perform complex work.
019 *
020 * These callbacks are often injected into a transformed component class. Bear in mind that such
021 * callbacks must be <em>threadsafe</em>, since every instance of such a class will share a single instance of the
022 * operation.
023 *
024 * @deprecated In Tapestry 5.4; use {@link org.apache.tapestry5.plastic.MethodAdvice} and other parts of the new (in 5.3) plastic library.
025 */
026public interface ComponentResourcesOperation
027{
028    /**
029     * Perform some operation that requires the components' resources.
030     */
031    void perform(ComponentResources resources);
032}