// 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.util.Locale;
import org.apache.tapestry.IEngine;
import org.apache.tapestry.services.EngineFactory;
import org.apache.tapestry.services.EngineManager;
import org.apache.tapestry.services.ObjectPool;
import org.apache.tapestry.services.RequestLocaleManager;
/**
* Implementation of service {@link org.apache.tapestry.services.EngineManager}.
* Service point tapestry.request.EngineManager.
*
* @author Howard Lewis Ship
* @since 4.0
*/
public class EngineManagerImpl implements EngineManager
{
private ObjectPool _enginePool;
private EngineFactory _engineFactory;
private RequestLocaleManager _localeManager;
public IEngine getEngineInstance()
{
Locale locale = _localeManager.extractLocaleForCurrentRequest();
IEngine result = (IEngine) _enginePool.get(locale);
// This happens when either the pool is empty, or when a session exists
// but the engine has not been stored into it (which should never happen, and
// probably indicates an error in the framework or the application).
if (result == null)
result = _engineFactory.constructNewEngineInstance(locale);
return result;
}
public void storeEngineInstance(IEngine engine)
{
_enginePool.store(engine.getLocale(), engine);
}
public void setEngineFactory(EngineFactory factory)
{
_engineFactory = factory;
}
public void setEnginePool(ObjectPool pool)
{
_enginePool = pool;
}
public void setLocaleManager(RequestLocaleManager manager)
{
_localeManager = manager;
}
}