// 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.RequestGlobals;
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>Storing the request and response into {@link org.apache.tapestry.services.RequestGlobals}.
* <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;
private RequestGlobals _requestGlobals;
public void service(WebRequest request, WebResponse response) throws IOException
{
_requestGlobals.store(request, response);
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;
}
public void setRequestGlobals(RequestGlobals requestGlobals)
{
_requestGlobals = requestGlobals;
}
}