| // Copyright 2006, 2009 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; |
| |
| /** |
| * A service decorator is derived from a {@link org.apache.tapestry5.ioc.def.DecoratorDef} and is responsible for |
| * building an interceptor around an existing implementation (called the "delegate"). |
| * |
| * @see org.apache.tapestry5.ioc.ServiceAdvisor |
| */ |
| public interface ServiceDecorator |
| { |
| /** |
| * Creates a new interceptor object implementing the same service interface as the delegate object. |
| * |
| * @param delegate an existing object implementing the service interface. |
| * @return a new object implementing the same service interface, or delegate or null if the decorator chooses not to |
| * create a new interceptor. |
| */ |
| Object createInterceptor(Object delegate); |
| } |