/**
* The contents of this file are subject to the license and copyright
* detailed in the LICENSE and NOTICE files at the root of the source
* tree and available online at
*
* http://www.dspace.org/license/
*/
package org.dspace.app.xmlui.aspect.discovery;
import java.io.IOException;
import java.sql.SQLException;
import org.apache.commons.collections.CollectionUtils;
import org.dspace.app.xmlui.cocoon.AbstractDSpaceTransformer;
import org.dspace.app.xmlui.utils.HandleUtil;
import org.dspace.app.xmlui.wing.Message;
import org.dspace.app.xmlui.wing.WingException;
import org.dspace.app.xmlui.wing.element.*;
import org.dspace.authorize.AuthorizeException;
import org.dspace.content.DSpaceObject;
import org.dspace.content.Item;
import org.dspace.discovery.SearchUtils;
import org.dspace.discovery.configuration.DiscoveryConfiguration;
import org.xml.sax.SAXException;
/**
* Displays related items to the currently viewable item
*
* @author Kevin Van de Velde (kevin at atmire dot com)
* @author Mark Diggory (markd at atmire dot com)
* @author Ben Bosman (ben at atmire dot com)
*/
public class RelatedItems extends AbstractDSpaceTransformer
{
private static final Message T_head = message("xmlui.Discovery.RelatedItems.head");
private static final Message T_related_help = message("xmlui.Discovery.RelatedItems.help");
/**
* Display items related to the given item
*/
public void addBody(Body body) throws SAXException, WingException,
SQLException, IOException, AuthorizeException
{
DSpaceObject dspaceObject = HandleUtil.obtainHandle(objectModel);
if (!(dspaceObject instanceof Item))
{
return;
}
Item item = (Item) dspaceObject;
DiscoveryConfiguration discoveryConfiguration = SearchUtils.getDiscoveryConfiguration(item);
if(discoveryConfiguration != null && discoveryConfiguration.getMoreLikeThisConfiguration() != null)
{
java.util.List<Item> relatedItems = SearchUtils.getSearchService().getRelatedItems(context, item, discoveryConfiguration.getMoreLikeThisConfiguration());
if(CollectionUtils.isNotEmpty(relatedItems))
{
Division mltDiv = body.addDivision("item-related-container").addDivision("item-related", "secondary related");
mltDiv.setHead(T_head);
mltDiv.addPara(T_related_help);
ReferenceSet set = mltDiv.addReferenceSet(
"item-related-items", ReferenceSet.TYPE_SUMMARY_LIST,
null, "related-items");
for (DSpaceObject dso : relatedItems)
{
set.addReference(dso);
}
}
}
}
/**
* Recycle
*/
public void recycle() {
super.recycle();
}
}