| // Copyright 2007, 2008 The Apache Software Foundation |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package org.apache.tapestry5.ioc.annotations; |
| |
| import java.lang.annotation.Documented; |
| import static java.lang.annotation.ElementType.FIELD; |
| import static java.lang.annotation.ElementType.PARAMETER; |
| import java.lang.annotation.Retention; |
| import static java.lang.annotation.RetentionPolicy.RUNTIME; |
| import java.lang.annotation.Target; |
| |
| /** |
| * Marker annotation used to denote a service that is the primary instance of some common interface. This is often used |
| * when a service is a {@linkplain org.apache.tapestry5.ioc.services.ChainBuilder chain of command} or {@linkplain |
| * org.apache.tapestry5.ioc.services.StrategyBuilder strategy-based} and, therefore, many services will implement the |
| * same interface. |
| */ |
| @Target( |
| { PARAMETER, FIELD }) |
| @Retention(RUNTIME) |
| @Documented |
| public @interface Primary |
| { |
| |
| } |
