| // Copyright 2006, 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.services; |
| |
| import org.apache.tapestry5.ioc.ObjectProvider; |
| |
| /** |
| * The Alias service provides an ObjectProvider that fits into the MasterObjectProvider command chain and disambiguates |
| * injections based on type. {@linkplain org.apache.tapestry5.services.AliasContribution Contibutions} to the Alias |
| * service identify the desired service to inject for a particular service interface; this is only necessary when there |
| * is more than one service implementing the same interface. |
| * <p/> |
| * The {@linkplain AliasManager AliasOverrides} service also takes an unordered configuration of {@link |
| * org.apache.tapestry5.services.AliasContribution}; such contributions override the "factory" contributions to the Alias |
| * service itself. This is often used to replace built-in service implementations with ones that are specific to a |
| * particular application. |
| */ |
| public interface Alias |
| { |
| /** |
| * Returns an object provideer that checks the desired type against the service's contributions. |
| */ |
| ObjectProvider getObjectProvider(); |
| } |
