package org.apache.myfaces.tobago.servlet;
/*
* 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.
*/
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import javax.faces.FactoryFinder;
import javax.faces.application.Application;
import javax.faces.application.NavigationHandler;
import javax.faces.application.ViewHandler;
import javax.faces.component.UIViewRoot;
import javax.faces.context.FacesContext;
import javax.faces.context.FacesContextFactory;
import javax.faces.lifecycle.Lifecycle;
import javax.faces.lifecycle.LifecycleFactory;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
public abstract class NonFacesRequestServlet extends HttpServlet {
private static final long serialVersionUID = -7448621953821447997L;
private static final Log LOG = LogFactory.getLog(NonFacesRequestServlet.class);
protected void service(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
LifecycleFactory lFactory = (LifecycleFactory) FactoryFinder.getFactory(FactoryFinder.LIFECYCLE_FACTORY);
Lifecycle lifecycle = lFactory.getLifecycle(LifecycleFactory.DEFAULT_LIFECYCLE);
FacesContextFactory fcFactory = (FacesContextFactory) FactoryFinder.getFactory(FactoryFinder.FACES_CONTEXT_FACTORY);
FacesContext facesContext = fcFactory.getFacesContext(getServletContext(), request, response, lifecycle);
try {
// invoke application
String outcome = invokeApplication(facesContext);
if (facesContext.getResponseComplete()) {
return;
}
if (LOG.isDebugEnabled()) {
LOG.debug("outcome = '" + outcome + "'");
}
Application application = facesContext.getApplication();
NavigationHandler navigationHandler = application.getNavigationHandler();
navigationHandler.handleNavigation(facesContext, null, outcome);
if (facesContext.getViewRoot() == null) {
ViewHandler viewHandler = application.getViewHandler();
String viewId = getFromViewId();
UIViewRoot view = viewHandler.createView(facesContext, viewId);
facesContext.setViewRoot(view);
}
lifecycle.render(facesContext);
} finally {
facesContext.release();
}
}
public abstract String invokeApplication(FacesContext facesContext);
/**
* will be called to initialize the first ViewRoot,
* may be overwritten by extended classes
*/
public String getFromViewId() {
return "";
}
}