/*
* 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.
*
* $Header:$
*/
package org.apache.beehive.netui.pageflow;
import org.apache.beehive.netui.pageflow.handler.StorageHandler;
import org.apache.beehive.netui.pageflow.handler.Handlers;
import org.apache.beehive.netui.pageflow.scoping.ScopedServletUtils;
import org.apache.beehive.netui.pageflow.internal.InternalConstants;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.ServletContext;
public class PageFlowControlContainerFactory
{
private static String PAGEFLOW_CONTROL_CONTAINER = InternalConstants.ATTR_PREFIX + "PageFlowControlContainerInstance";
/**
* This method will return the <code>PageFlowControlContainer</code> that is acting as the
* control container for the page flow runtime.
* @param request The current request
* @param servletContext The servlet context
* @return The <code>pageFLowControlContainer</code> acting as the control container.
*/
public static synchronized PageFlowControlContainer getControlContainer(HttpServletRequest request, ServletContext servletContext)
{
PageFlowControlContainer pfcc = (PageFlowControlContainer) getSessionVar(request, servletContext, PAGEFLOW_CONTROL_CONTAINER);
if (pfcc != null)
return pfcc;
pfcc = new PageFlowControlContainerImpl();
setSessionVar(request,servletContext,PAGEFLOW_CONTROL_CONTAINER,pfcc);
return pfcc;
}
/**
* This is a generic routine that will retrieve a value from the Session through the
* StorageHandler.
* @param request
* @param servletContext
* @param name The name of the value to be retrieved
* @return The requested value from the session
*/
private static Object getSessionVar(HttpServletRequest request, ServletContext servletContext, String name)
{
StorageHandler sh = Handlers.get( servletContext ).getStorageHandler();
HttpServletRequest unwrappedRequest = PageFlowUtils.unwrapMultipart( request );
RequestContext rc = new RequestContext( unwrappedRequest, null );
String attrName = ScopedServletUtils.getScopedSessionAttrName(name, unwrappedRequest);
return sh.getAttribute( rc, attrName );
}
/**
* This is a generic routine that will store a value into the Session through the StorageHandler.
* @param request
* @param servletContext
* @param name The name of the variable to be stored
* @param value The value of the variable to be stored
*/
private static void setSessionVar(HttpServletRequest request, ServletContext servletContext, String name, Object value)
{
StorageHandler sh = Handlers.get( servletContext ).getStorageHandler();
HttpServletRequest unwrappedRequest = PageFlowUtils.unwrapMultipart( request );
RequestContext rc = new RequestContext( unwrappedRequest, null );
String attrName = ScopedServletUtils.getScopedSessionAttrName(name, unwrappedRequest);
sh.setAttribute( rc, attrName, value );
}
}