| // Copyright 2004, 2005 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.tapestry.services.impl; |
| |
| import java.io.IOException; |
| |
| import org.apache.tapestry.Constants; |
| import org.apache.tapestry.IEngine; |
| import org.apache.tapestry.services.EngineManager; |
| import org.apache.tapestry.services.Infrastructure; |
| import org.apache.tapestry.services.WebRequestServicer; |
| import org.apache.tapestry.web.WebRequest; |
| import org.apache.tapestry.web.WebResponse; |
| |
| /** |
| * The terminatior for the <code>tapestry.RequestProcessor</code> pipeline, this service is |
| * responsible for: |
| * <ul> |
| * <li>Locating the correct engine instance and letting it to the rest of the request. |
| * <li>Returning the engine instance to the pool at the end of the request. </ul> |
| * |
| * @author Howard Lewis Ship |
| * @since 4.0 |
| */ |
| public class InvokeEngineTerminator implements WebRequestServicer |
| { |
| private EngineManager _engineManager; |
| |
| private Infrastructure _infrastructure; |
| |
| public void service(WebRequest request, WebResponse response) throws IOException |
| { |
| IEngine engine = _engineManager.getEngineInstance(); |
| |
| // Until we can inject the infrastructure into the engine |
| // we do this to let the engine know about it. |
| |
| request.setAttribute(Constants.INFRASTRUCTURE_KEY, _infrastructure); |
| |
| try |
| { |
| engine.service(request, response); |
| } |
| finally |
| { |
| _engineManager.storeEngineInstance(engine); |
| } |
| |
| } |
| |
| public void setEngineManager(EngineManager manager) |
| { |
| _engineManager = manager; |
| } |
| |
| public void setInfrastructure(Infrastructure infrastructure) |
| { |
| _infrastructure = infrastructure; |
| } |
| } |