001/*
002 *  Copyright 2011 Anyware Services
003 *
004 *  Licensed under the Apache License, Version 2.0 (the "License");
005 *  you may not use this file except in compliance with the License.
006 *  You may obtain a copy of the License at
007 *
008 *      http://www.apache.org/licenses/LICENSE-2.0
009 *
010 *  Unless required by applicable law or agreed to in writing, software
011 *  distributed under the License is distributed on an "AS IS" BASIS,
012 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 *  See the License for the specific language governing permissions and
014 *  limitations under the License.
015 */
016package org.ametys.workspaces.repository.jcr;
017
018import java.io.IOException;
019import java.util.Set;
020
021import javax.jcr.RepositoryException;
022
023import org.apache.avalon.framework.service.ServiceException;
024import org.apache.avalon.framework.service.ServiceManager;
025import org.apache.cocoon.ProcessingException;
026import org.apache.cocoon.environment.ObjectModelHelper;
027import org.apache.cocoon.environment.Request;
028import org.apache.cocoon.xml.AttributesImpl;
029import org.apache.cocoon.xml.XMLUtils;
030import org.xml.sax.SAXException;
031
032/**
033 * Generates the session state.
034 */
035public class SessionInformationGenerator extends AbstractRepositoryGenerator
036{
037    
038    /** The node state tracker. */
039    protected NodeStateTracker _nodeStateTracker;
040    
041    @Override
042    public void service(ServiceManager serviceManager) throws ServiceException
043    {
044        super.service(serviceManager);
045        _nodeStateTracker = (NodeStateTracker) serviceManager.lookup(NodeStateTracker.ROLE);
046    }
047    
048    public void generate() throws IOException, SAXException, ProcessingException
049    {
050        Request request = ObjectModelHelper.getRequest(objectModel);
051        
052        String workspaceName = parameters.getParameter("workspace", "default");
053            
054        _getRepository(request, workspaceName);
055
056        contentHandler.startDocument();
057        
058        try
059        {
060            AttributesImpl attrs = new AttributesImpl();
061            attrs.addCDATAAttribute("hasPendingChanges", Boolean.toString(_session.hasPendingChanges()));
062            XMLUtils.startElement(contentHandler, "session", attrs);
063            
064            generateNewNodes(workspaceName);
065            
066            XMLUtils.endElement(contentHandler, "session");
067        }
068        catch (RepositoryException e)
069        {
070            throw new ProcessingException(e);
071        }
072                
073        contentHandler.endDocument();
074    }
075    
076    /**
077     * Generate the new nodes.
078     * @param workspaceName the workspace name
079     * @throws SAXException if an error occurred
080     */
081    protected void generateNewNodes(String workspaceName) throws SAXException
082    {
083        Set<String> newNodes = _nodeStateTracker.getNewNodes(workspaceName);
084        
085        XMLUtils.startElement(contentHandler, "new-nodes");
086        
087        for (String newNodePath : newNodes)
088        {
089            AttributesImpl attrs = new AttributesImpl();
090            attrs.addCDATAAttribute("path", newNodePath);
091            XMLUtils.createElement(contentHandler, "node", attrs);
092        }
093        
094        XMLUtils.endElement(contentHandler, "new-nodes");
095    }
096    
097}