OmBuilderXStreamImpl.java

/* ===============================================================================
 *
 * Part of the InfoGlue Content Management Platform (www.infoglue.org)
 *
 * ===============================================================================
 *
 *  Copyright (C)
 * 
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License version 2, as published by the
 * Free Software Foundation. See the file LICENSE.html for more information.
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY, including the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc. / 59 Temple
 * Place, Suite 330 / Boston, MA 02111-1307 / USA.
 *
 * ===============================================================================
 */
package org.infoglue.deliver.portal;

import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.pluto.om.entity.PortletApplicationEntity;
import org.apache.pluto.om.entity.PortletApplicationEntityList;
import org.infoglue.deliver.portal.om.PortletApplicationEntityImpl;
import org.infoglue.deliver.portal.om.PortletApplicationEntityListImpl;
import org.infoglue.deliver.portal.om.PortletEntityImpl;
import org.infoglue.deliver.portal.om.PreferenceImpl;

import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.io.xml.DomDriver;

/**
 * OM builder to serialize/deserialize a PortletApplicationEntityList
 * (registry).
 * 
 * @author jand
 * @author joran
 *  
 */
public class OmBuilderXStreamImpl implements OmBuilder 
{
    private static final Log log = LogFactory.getLog(OmBuilderXStreamImpl.class);

    private XStream xstream;

    public OmBuilderXStreamImpl() 
    {
        xstream = new XStream(new DomDriver());
        xstream.alias("applications", ArrayList.class);
        xstream.alias("application", PortletApplicationEntityImpl.class);
        xstream.alias("entities", ArrayList.class);
        xstream.alias("entity", PortletEntityImpl.class);
        xstream.alias("preferences", ArrayList.class);
        xstream.alias("preference", PreferenceImpl.class);
        //xstream.alias("name", java.lang.String.class);
        xstream.alias("value", java.lang.String.class);
        //xstream.alias("value", ArrayList.class);
        //xstream.addImplicitCollection(PreferenceSet.class, "preference",
        // PreferenceImpl.class);
        //        xstream.addImplicitCollection(
        //            ArrayList.class,
        //            "applications",
        //            PortletApplicationEntityImpl.class);
        xstream.addImplicitCollection(PreferenceImpl.class, "values", String.class);
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.apache.pluto.portalImpl.services.portletentityregistry.PortletEntityRegistryService#getPortletApplicationEntityList()
     */
    public PortletApplicationEntityListImpl getPortletApplicationEntityList(InputStream is) 
    {
    	ArrayList apps = new ArrayList();
    	try
    	{
    		apps = (ArrayList) xstream.fromXML(new InputStreamReader(is));
    	}
    	catch(Exception e)
    	{
    		e.printStackTrace();
    	}

    	PortletApplicationEntityListImpl applications = new PortletApplicationEntityListImpl(apps);

        // This is here to set back-references
        for (Iterator iter = applications.iterator(); iter.hasNext();) {
            PortletApplicationEntity app = (PortletApplicationEntity) iter.next();

            for (Iterator ports = app.getPortletEntityList().iterator(); ports.hasNext();) {
                PortletEntityImpl port = (PortletEntityImpl) ports.next();
                if (port.getId().toString().indexOf(".") < 0) {
                    port.setId(app.getId() + "." + port.getId());
                }
                port.setPortletApplicationEntity(app);

            }
        }
        return applications;
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.apache.pluto.portalImpl.services.portletentityregistry.PortletEntityRegistryService#toXML()
     */
    public String toXML(PortletApplicationEntityList pael) {
        List apps = new ArrayList();
        for (Iterator it = pael.iterator(); it.hasNext();) {
            apps.add(it.next());
        }
        return xstream.toXML(apps);
    }
}