001// Copyright 2006, 2009 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.ioc.annotations; 016 017import java.lang.annotation.Documented; 018import static java.lang.annotation.ElementType.METHOD; 019import java.lang.annotation.Retention; 020import static java.lang.annotation.RetentionPolicy.RUNTIME; 021import java.lang.annotation.Target; 022 023/** 024 * Optional, but typically used, annotation for service decorator methods, used to define which services the decorator 025 * applies to. This annotation defines a number of <em>patterns</em> that allow services across multiple modules to be 026 * selected. A decorator is applied to a service if any of its patterns match the service. 027 * <p/> 028 * TODO: Describe pattern glob-match syntax 029 * <p/> 030 * When the Match annotation is not supplied, then the decorator only applies to a single service: the service whose id 031 * matches the decorators id; that is, method <code>decorateMyService()</code> would decorate only the service provided 032 * by the <code>buildMyService()</code> method, within the same module. 033 */ 034@Target(METHOD) 035@Retention(RUNTIME) 036@Documented 037@UseWith(AnnotationUseContext.SERVICE_DECORATOR) 038public @interface Match 039{ 040 041 /** 042 * Defines a list of patterns matched against potential service ids to identify to which services the decorator 043 * applies. A decorator is applied if <em>any</em> of the patterns match. 044 */ 045 String[] value(); 046}