001// Copyright 2007 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.services;
016
017import java.lang.annotation.Documented;
018import static java.lang.annotation.ElementType.FIELD;
019import static java.lang.annotation.ElementType.PARAMETER;
020import java.lang.annotation.Retention;
021import static java.lang.annotation.RetentionPolicy.RUNTIME;
022import java.lang.annotation.Target;
023
024/**
025 * Marks services provided by this module that may need to be unambiguously referenced. Injecting with this marker
026 * annotation and the correct type ensure that the version defined in this module is used, even if another module
027 * provides a service with the same service interface.
028 */
029@Target(
030        { PARAMETER, FIELD })
031@Retention(RUNTIME)
032@Documented
033public @interface Builtin
034{
035
036}