    001// Copyright 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 static java.lang.annotation.ElementType.TYPE;
    020import java.lang.annotation.Retention;
    021import static java.lang.annotation.RetentionPolicy.RUNTIME;
    022import java.lang.annotation.Target;
    023
    024/**
    025 * An optional annotation that may be placed on a service building method of a module, or on the implementation class
    026 * (when using service binding via the {@link org.apache.tapestry5.ioc.ServiceBinder}). The annotation overrides the
    027 * default id for services (the default service id is the simple name of the service interface).
    028 */
    029@Target({ TYPE, METHOD })
    030@Retention(RUNTIME)
    031@Documented
    032@UseWith({AnnotationUseContext.SERVICE, AnnotationUseContext.MODULE})
    033public @interface ServiceId
    034{
    035    /**
    036     * An identifier of a service.
    037     */
    038    String value();
    039}