| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.myfaces.context; |
| |
| import java.lang.reflect.Field; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| |
| import javax.faces.FacesException; |
| import javax.faces.FactoryFinder; |
| import javax.faces.application.ApplicationFactory; |
| import javax.faces.context.ExceptionHandlerFactory; |
| import javax.faces.context.ExternalContext; |
| import javax.faces.context.ExternalContextFactory; |
| import javax.faces.context.FacesContext; |
| import javax.faces.context.FacesContextFactory; |
| import javax.faces.context.PartialViewContextFactory; |
| import javax.faces.lifecycle.Lifecycle; |
| import javax.faces.render.RenderKitFactory; |
| |
| import org.apache.myfaces.context.servlet.FacesContextImpl; |
| import org.apache.myfaces.util.lang.Assert; |
| import org.apache.myfaces.util.lang.ClassUtils; |
| |
| /** |
| * DOCUMENT ME! |
| * |
| * @author Manfred Geiler (latest modification by $Author$) |
| * @version $Revision$ $Date$ |
| */ |
| public class FacesContextFactoryImpl extends FacesContextFactory implements ReleasableFacesContextFactory |
| { |
| private static final Logger log = Logger.getLogger(FacesContextFactoryImpl.class.getName()); |
| |
| /** |
| * Reference to factory to prevent unnecessary lookups |
| */ |
| private final ExternalContextFactory _externalContextFactory; |
| |
| /** |
| * Reference to factory to prevent unnecessary lookups |
| */ |
| private final ExceptionHandlerFactory _exceptionHandlerFactory; |
| |
| private final ApplicationFactory _applicationFactory; |
| |
| private final RenderKitFactory _renderKitFactory; |
| |
| private final PartialViewContextFactory _partialViewContextFactory; |
| |
| /** |
| * This var is assigned as the same as javax.faces.context.ExternalContext._firstInstance, |
| * and since it is a static reference and does not change, we can cache it here safely. |
| * |
| * We need |
| */ |
| private final ThreadLocal<ExternalContext> _firstExternalContextInstance; |
| |
| @SuppressWarnings("unchecked") |
| public FacesContextFactoryImpl() |
| { |
| super(); |
| ThreadLocal<ExternalContext> firstExternalContextInstance = null; |
| try |
| { |
| Class clazz = ClassUtils.classForName("javax.faces.context._MyFacesExternalContextHelper"); |
| Field externalContextFirstInstance = clazz.getDeclaredField("firstInstance"); |
| externalContextFirstInstance.setAccessible(true); |
| |
| if (firstExternalContextInstance == null) |
| { |
| firstExternalContextInstance = |
| (ThreadLocal<ExternalContext>) externalContextFirstInstance.get(null); |
| } |
| } |
| catch (SecurityException e) |
| { |
| // It could happen, but we can ignore it. |
| if (log.isLoggable(Level.FINE)) |
| { |
| log.log(Level.FINE, "Cannot access field firstInstance" |
| + "from _MyFacesExternalContextHelper ", e); |
| } |
| } |
| catch (Exception e) |
| { |
| if (log.isLoggable(Level.SEVERE)) |
| { |
| log.log(Level.SEVERE, "Cannot find field firstInstance" |
| + "from _MyFacesExternalContextHelper ", e); |
| } |
| } |
| |
| _firstExternalContextInstance = firstExternalContextInstance; |
| |
| _externalContextFactory = (ExternalContextFactory) |
| FactoryFinder.getFactory(FactoryFinder.EXTERNAL_CONTEXT_FACTORY); |
| |
| _exceptionHandlerFactory = (ExceptionHandlerFactory) |
| FactoryFinder.getFactory(FactoryFinder.EXCEPTION_HANDLER_FACTORY); |
| |
| _applicationFactory = (ApplicationFactory) |
| FactoryFinder.getFactory(FactoryFinder.APPLICATION_FACTORY); |
| |
| _renderKitFactory = (RenderKitFactory) |
| FactoryFinder.getFactory(FactoryFinder.RENDER_KIT_FACTORY); |
| |
| _partialViewContextFactory = (PartialViewContextFactory) |
| FactoryFinder.getFactory(FactoryFinder.PARTIAL_VIEW_CONTEXT_FACTORY); |
| } |
| |
| @Override |
| public FacesContext getFacesContext(Object context, Object request, Object response, Lifecycle lifecycle) |
| throws FacesException |
| { |
| Assert.notNull(context, "context"); |
| Assert.notNull(request, "request"); |
| Assert.notNull(response, "response"); |
| Assert.notNull(lifecycle, "lifecycle"); |
| |
| ExternalContext externalContext = _externalContextFactory.getExternalContext(context, request, response); |
| |
| ExternalContext defaultExternalContext = null; |
| |
| if (_firstExternalContextInstance != null) |
| { |
| defaultExternalContext = (ExternalContext) |
| externalContext.getRequestMap().remove( |
| ExternalContextFactoryImpl.EXTERNAL_CONTEXT_KEY); |
| |
| if (defaultExternalContext != null) |
| { |
| // Initialize the firstExternalContext that old jsf 1.2 or lower |
| // implementations of ExternalContext should fall when call jsf 2.0 |
| // methods. |
| _firstExternalContextInstance.set(defaultExternalContext); |
| } |
| } |
| |
| FacesContext facesContext = new FacesContextImpl(externalContext, defaultExternalContext, this, |
| _applicationFactory, _renderKitFactory, _partialViewContextFactory); |
| facesContext.setExceptionHandler(_exceptionHandlerFactory.getExceptionHandler()); |
| |
| return facesContext; |
| } |
| |
| @Override |
| public void release() |
| { |
| if (_firstExternalContextInstance != null) |
| { |
| _firstExternalContextInstance.remove(); |
| } |
| } |
| } |