001// Copyright 2005 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.tapestry.enhance; 016 017import org.apache.tapestry.spec.InjectSpecification; 018 019/** 020 * A kind of enhancement worker dedicated to injection, based on the <inject> element of the 021 * specification. There are different types of injection which match up to different implementations 022 * of this interface (i.e., the Strategy pattern). 023 * 024 * @author Howard M. Lewis Ship 025 * @since 4.0 026 * @see org.apache.tapestry.spec.InjectSpecification 027 * @see org.apache.tapestry.enhance.DispatchToInjectWorker 028 */ 029public interface InjectEnhancementWorker 030{ 031 /** 032 * Perform the enhancement defined by the {@link org.apache.tapestry.spec.InjectSpecification}. 033 * Thrown runtime exceptions are caught and reported by the invoker. 034 */ 035 036 public void performEnhancement(EnhancementOperation op, InjectSpecification spec); 037 038}