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Enhanced and renamed the DSORelationsConverterPlugin into SimpleDSOR...
Renamed the DSORelationsConverterPlugin into SimpleDSORelationsConverterPlugin. Overhault the Plugin: it can be configured now and it can create multiple links per DSO Relation.
This commit is contained in:
Pascal-Nicolas Becker
committed by
Pascal-Nicolas Becker
Pascal-Nicolas Becker
parent
fd8626bbac
commit
4b250862fc
@@ -1,329 +0,0 @@
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/**
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* The contents of this file are subject to the license and copyright
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* detailed in the LICENSE and NOTICE files at the root of the source
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* tree and available online at
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*
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* http://www.dspace.org/license/
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*/
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package org.dspace.rdf.conversion;
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import com.hp.hpl.jena.rdf.model.Model;
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import com.hp.hpl.jena.rdf.model.ModelFactory;
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import java.io.UnsupportedEncodingException;
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import java.sql.SQLException;
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import java.util.Arrays;
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import java.util.LinkedList;
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import org.dspace.app.util.Util;
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import org.dspace.content.Bitstream;
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import org.dspace.content.Bundle;
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import org.dspace.content.Collection;
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import org.dspace.content.Community;
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import org.dspace.content.DSpaceObject;
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import org.dspace.content.Item;
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import org.dspace.content.ItemIterator;
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import org.dspace.content.Site;
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import org.dspace.core.Constants;
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import org.dspace.core.Context;
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import org.dspace.rdf.RDFUtil;
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import org.dspace.services.ConfigurationService;
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/**
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*
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* @author Pascal-Nicolas Becker (dspace -at- pascal -hyphen- becker -dot- de)
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*/
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public class DSORelationsConverterPlugin
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implements ConverterPlugin
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{
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protected ConfigurationService configurationService;
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@Override
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public void setConfigurationService(ConfigurationService configurationService)
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{
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this.configurationService = configurationService;
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}
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@Override
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public Model convert(Context context, DSpaceObject dso)
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throws SQLException
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{
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switch(dso.getType())
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{
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case (Constants.SITE) :
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{
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return convertSite(context, (Site) dso);
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}
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case (Constants.COMMUNITY) :
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{
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return convertCommunity(context, (Community) dso);
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}
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case (Constants.COLLECTION) :
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{
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return convertCollection(context, (Collection) dso);
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}
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case (Constants.ITEM) :
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{
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return convertItem(context, (Item) dso);
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}
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}
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return null;
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}
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public Model convertSite(Context context, Site site)
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throws SQLException
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{
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Model m = ModelFactory.createDefaultModel();
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String myId = RDFUtil.generateIdentifier(context, site);
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if (myId == null)
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{
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return null;
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}
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Community[] topLevelCommies = Community.findAllTop(context);
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for (Community community : topLevelCommies)
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{
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if (!RDFUtil.isPublicBoolean(context, community))
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{
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continue;
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}
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String id = RDFUtil.generateIdentifier(context, community);
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if (id == null)
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{
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continue;
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}
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m.add(m.createResource(myId),
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m.createProperty("http://purl.org/dc/terms/hasPart"),
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m.createResource(id));
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}
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if (m.isEmpty())
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{
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m.close();
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return null;
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}
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m.setNsPrefix("dcterms", "http://purl.org/dc/terms/");
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return m;
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}
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public Model convertCommunity(Context context, Community community)
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throws SQLException
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{
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Model m = ModelFactory.createDefaultModel();
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String myId = RDFUtil.generateIdentifier(context, community);
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if (myId == null)
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{
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return null;
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}
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// add all parents
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DSpaceObject[] parents = community.getAllParents();
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// check whether this is a top level community
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if (parents.length == 0)
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{
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parents = new DSpaceObject[] {Site.find(context, Site.SITE_ID)};
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}
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for (DSpaceObject parent : parents)
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{
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if (!RDFUtil.isPublicBoolean(context, parent))
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{
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continue;
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}
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String id = RDFUtil.generateIdentifier(context, parent);
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if (id != null)
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{
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m.add(m.createResource(myId),
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m.createProperty("http://purl.org/dc/terms/isPartOf"),
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m.createResource(id));
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}
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}
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// add all subcommunities and collections.
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LinkedList<DSpaceObject> subDSOs = new LinkedList<>();
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subDSOs.addAll(Arrays.asList(community.getSubcommunities()));
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subDSOs.addAll(Arrays.asList(community.getAllCollections()));
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for (DSpaceObject dso : subDSOs)
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{
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if (!RDFUtil.isPublicBoolean(context, dso))
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{
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continue;
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}
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String id = RDFUtil.generateIdentifier(context, dso);
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if (id != null)
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{
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m.add(m.createResource(myId),
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m.createProperty("http://purl.org/dc/terms/hasPart"),
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m.createResource(id));
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}
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}
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if (m.isEmpty())
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{
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m.close();
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return null;
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}
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m.setNsPrefix("dcterms", "http://purl.org/dc/terms/");
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return m;
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}
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public Model convertCollection(Context context, Collection collection)
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throws SQLException
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{
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Model m = ModelFactory.createDefaultModel();
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String myId = RDFUtil.generateIdentifier(context, collection);
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if (myId == null)
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{
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return null;
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}
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// add all parents
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DSpaceObject[] parents = collection.getCommunities();
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for (DSpaceObject parent : parents)
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{
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if (!RDFUtil.isPublicBoolean(context, parent))
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{
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continue;
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}
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String id = RDFUtil.generateIdentifier(context, parent);
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if (id != null)
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{
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m.add(m.createResource(myId),
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m.createProperty("http://purl.org/dc/terms/isPartOf"),
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m.createResource(id));
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}
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}
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// add all items
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ItemIterator items = collection.getAllItems();
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while (items.hasNext())
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{
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String id = RDFUtil.generateIdentifier(context, items.next());
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if (id != null)
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{
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m.add(m.createResource(myId),
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m.createProperty("http://purl.org/dc/terms/hasPart"),
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m.createResource(id));
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}
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}
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if (m.isEmpty())
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{
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m.close();
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return null;
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}
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m.setNsPrefix("dcterms", "http://purl.org/dc/terms/");
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return m;
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}
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public Model convertItem(Context context, Item item)
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throws SQLException
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{
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Model m = ModelFactory.createDefaultModel();
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String myId = RDFUtil.generateIdentifier(context, item);
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if (myId == null)
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{
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return null;
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}
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// add all parents
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Collection[] collections = item.getCollections();
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for (DSpaceObject parent : collections)
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{
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if (!RDFUtil.isPublicBoolean(context, parent))
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{
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continue;
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}
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String id = RDFUtil.generateIdentifier(context, parent);
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if (id != null)
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{
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m.add(m.createResource(myId),
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m.createProperty("http://purl.org/dc/terms/isPartOf"),
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m.createResource(id));
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}
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}
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// add all items
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for(Bundle bundle : item.getBundles())
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{
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// currently link only the original files
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// TODO: Discuss if LICENSEs, THUMBNAILs and/or extracted TEXTs
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// should be linked/exported as well (and if sutch a feature should
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// be configurable).
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if (bundle.getName().equals("ORIGINAL"))
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{
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for (Bitstream bs : bundle.getBitstreams())
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{
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if (RDFUtil.isPublicBoolean(context, bs))
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{
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String url = bitstreamURI(bs);
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if (url != null)
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{
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// TODO: user other property here? perhaps we should
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// use something like the following?
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// http://prismstandard.org/namespaces/basic/3.0/url
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m.add(m.createResource(myId),
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m.createProperty("http://purl.org/dc/terms/hasPart"),
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m.createResource(url));
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}
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}
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}
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}
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}
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if (m.isEmpty())
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{
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m.close();
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return null;
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}
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m.setNsPrefix("dcterms", "http://purl.org/dc/terms/");
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return m;
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}
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public String bitstreamURI(Bitstream bitstream)
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throws SQLException
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{
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DSpaceObject parent = bitstream.getParentObject();
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if (!(parent instanceof Item))
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{
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// Bitstream is a community or collection logo.
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// we currently ignore those
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return null;
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}
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String dspaceURL = configurationService.getProperty("dspace.url");
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String link = "";
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try
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{
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// this currently (DSpace 4.1) works with xmlui and jspui.
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link = dspaceURL + "/bitstream/" + parent.getHandle() + "/"
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+ bitstream.getSequenceID() + "/"
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+ Util.encodeBitstreamName(bitstream.getName(), Constants.DEFAULT_ENCODING);
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}
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catch (UnsupportedEncodingException ex)
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{
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throw new RuntimeException("DSpace's default encoding is not supported.", ex);
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}
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return link;
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}
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@Override
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public boolean supports(int type)
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{
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switch (type)
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{
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case (Constants.COLLECTION) :
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return true;
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case (Constants.COMMUNITY) :
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return true;
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case (Constants.ITEM) :
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return true;
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case (Constants.SITE) :
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return true;
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default :
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return false;
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}
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}
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}
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@@ -0,0 +1,607 @@
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/**
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* The contents of this file are subject to the license and copyright
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* detailed in the LICENSE and NOTICE files at the root of the source
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* tree and available online at
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*
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* http://www.dspace.org/license/
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*/
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package org.dspace.rdf.conversion;
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import com.hp.hpl.jena.rdf.model.Model;
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import com.hp.hpl.jena.rdf.model.ModelFactory;
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import com.hp.hpl.jena.util.FileManager;
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import com.hp.hpl.jena.util.FileUtils;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.UnsupportedEncodingException;
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import java.sql.SQLException;
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import java.util.Arrays;
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import java.util.LinkedList;
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import org.apache.commons.lang.StringUtils;
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import org.apache.log4j.Logger;
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import org.dspace.app.util.Util;
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import org.dspace.content.Bitstream;
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import org.dspace.content.Bundle;
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import org.dspace.content.Collection;
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import org.dspace.content.Community;
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import org.dspace.content.DSpaceObject;
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import org.dspace.content.Item;
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import org.dspace.content.ItemIterator;
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import org.dspace.content.Site;
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import org.dspace.core.Constants;
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import org.dspace.core.Context;
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import org.dspace.rdf.RDFConfiguration;
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import org.dspace.rdf.RDFUtil;
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import org.dspace.services.ConfigurationService;
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import org.dspace.utils.DSpace;
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/**
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*
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* @author Pascal-Nicolas Becker (dspace -at- pascal -hyphen- becker -dot- de)
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*/
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public class SimpleDSORelationsConverterPlugin
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implements ConverterPlugin
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{
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public static final String SIMPLE_RELATIONS_PREFIXES_KEY = "rdf.simplerelations.prefixes";
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public static final String SIMPLE_RELATIONS_SITE2COMMUNITY_KEY = "rdf.simplerelations.site2community";
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public static final String SIMPLE_RELATIONS_COMMUNITY2SITE_KEY = "rdf.simplerelations.community2site";
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public static final String SIMPLE_RELATIONS_COMMUNITY2SUBCOMMUNITY_KEY= "rdf.simplerelations.community2subcommunity";
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public static final String SIMPLE_RELATIONS_SUBCOMMUNITY2COMMUNITY_KEY= "rdf.simplerelations.subcommunity2community";
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public static final String SIMPLE_RELATIONS_COMMUNITY2COLLECTION_KEY = "rdf.simplerelations.community2collection";
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public static final String SIMPLE_RELATIONS_COLLECTION2COMMUNITY_KEY = "rdf.simplerelations.collection2community";
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public static final String SIMPLE_RELATIONS_COLLECTION2ITEM_KEY = "rdf.simplerelations.collection2item";
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public static final String SIMPLE_RELATIONS_ITEM2COLLECTION_KEY = "rdf.simplerelations.item2collection";
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public static final String SIMPLE_RELATIONS_ITEM2BITSTREAM_KEY = "rdf.simplerelations.item2bitstream";
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private static final Logger log = Logger.getLogger(SimpleDSORelationsConverterPlugin.class);
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protected ConfigurationService configurationService;
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protected String[] site2community;
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protected String[] community2site;
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protected String[] community2subcommunity;
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protected String[] subcommunity2community;
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protected String[] community2collection;
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protected String[] collection2community;
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protected String[] collection2item;
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protected String[] item2collection;
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protected String[] item2bitstream;
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public SimpleDSORelationsConverterPlugin()
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{
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site2community = RDFConfiguration.loadConfigurationArray(SIMPLE_RELATIONS_SITE2COMMUNITY_KEY);
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community2site = RDFConfiguration.loadConfigurationArray(SIMPLE_RELATIONS_COMMUNITY2SITE_KEY);
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community2subcommunity = RDFConfiguration.loadConfigurationArray(SIMPLE_RELATIONS_COMMUNITY2SUBCOMMUNITY_KEY);
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subcommunity2community = RDFConfiguration.loadConfigurationArray(SIMPLE_RELATIONS_SUBCOMMUNITY2COMMUNITY_KEY);
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community2collection = RDFConfiguration.loadConfigurationArray(SIMPLE_RELATIONS_COMMUNITY2COLLECTION_KEY);
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collection2community = RDFConfiguration.loadConfigurationArray(SIMPLE_RELATIONS_COLLECTION2COMMUNITY_KEY);
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collection2item = RDFConfiguration.loadConfigurationArray(SIMPLE_RELATIONS_COLLECTION2ITEM_KEY);
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item2collection = RDFConfiguration.loadConfigurationArray(SIMPLE_RELATIONS_ITEM2COLLECTION_KEY);
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item2bitstream = RDFConfiguration.loadConfigurationArray(SIMPLE_RELATIONS_ITEM2BITSTREAM_KEY);
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if (site2community == null)
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{
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log.warn("SimpleDSORelationsConverterPlugin was unable to load "
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+ "configuration to convert relation between the repository "
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+ "the repository (SITE) and the top communities.");
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}
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if (community2site == null)
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{
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log.warn("SimpleDSORelationsConverterPlugin was unable to load "
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+ "configuration to convert relation between "
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+ "the top communities and the repository (SITE).");
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}
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if (community2subcommunity == null)
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{
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log.warn("SimpleDSORelationsConverterPlugin was unable to load "
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+ "configuration to convert relation between "
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+ "communities and subcommunities.");
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}
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if (subcommunity2community == null)
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{
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log.warn("SimpleDSORelationsConverterPlugin was unable to load "
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+ "configuration to convert relation between "
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+ "subcommunities and communities.");
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}
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if (community2collection == null)
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{
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log.warn("SimpleDSORelationsConverterPlugin was unable to load "
|
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+ "configuration to convert relation between "
|
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+ "communities and collections.");
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}
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if (collection2community == null)
|
||||
{
|
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log.warn("SimpleDSORelationsConverterPlugin was unable to load "
|
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+ "configuration to convert relation between "
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+ "collections and communities.");
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}
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if (collection2item == null)
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{
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log.warn("SimpleDSORelationsConverterPlugin was unable to load "
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+ "configuration to convert relation between "
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+ "collections and items");
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}
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if (item2collection == null)
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{
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log.warn("SimpleDSORelationsConverterPlugin was unable to load "
|
||||
+ "configuration to convert relation between "
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+ "items and collections");
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}
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if (item2bitstream == null)
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{
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log.warn("SimpleDSORelationsConverterPlugin was unable to load "
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+ "configuration to convert relation between "
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+ "items and bitstreams.");
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||||
}
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||||
}
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||||
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/**
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||||
* Loads the prefixes that should be used by the
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||||
* SimpleDSORelationsConverterPlugin. Please remember to close the model
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||||
* returned by this method.
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||||
* @return A model containing the content of the file used to configure the
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||||
* RDF-Prefixes that should be used by this plugin.
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||||
*/
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protected Model getPrefixes()
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||||
{
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||||
Model m = ModelFactory.createDefaultModel();
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String prefixesPath = configurationService
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||||
.getProperty(SIMPLE_RELATIONS_PREFIXES_KEY);
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||||
if (!StringUtils.isEmpty(prefixesPath))
|
||||
{
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||||
InputStream is = FileManager.get().open(prefixesPath);
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||||
if (is == null)
|
||||
{
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||||
log.warn("Cannot find file '" + prefixesPath + "', ignoring...");
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||||
} else {
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||||
m.read(is, null, FileUtils.guessLang(prefixesPath));
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try {
|
||||
is.close();
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||||
}
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||||
catch (IOException ex)
|
||||
{
|
||||
// nothing to do here.
|
||||
}
|
||||
}
|
||||
} else {
|
||||
log.warn("Configuration does not contain path to prefixes file for "
|
||||
+ "SimpleDSORelationsConverterPlugin. Will proceed without "
|
||||
+ "prefixes.");
|
||||
}
|
||||
return m;
|
||||
}
|
||||
|
||||
@Override
|
||||
public void setConfigurationService(ConfigurationService configurationService)
|
||||
{
|
||||
this.configurationService = configurationService;
|
||||
}
|
||||
|
||||
@Override
|
||||
public Model convert(Context context, DSpaceObject dso)
|
||||
throws SQLException
|
||||
{
|
||||
|
||||
switch(dso.getType())
|
||||
{
|
||||
case (Constants.SITE) :
|
||||
{
|
||||
return convertSite(context, (Site) dso);
|
||||
}
|
||||
case (Constants.COMMUNITY) :
|
||||
{
|
||||
return convertCommunity(context, (Community) dso);
|
||||
}
|
||||
case (Constants.COLLECTION) :
|
||||
{
|
||||
return convertCollection(context, (Collection) dso);
|
||||
}
|
||||
case (Constants.ITEM) :
|
||||
{
|
||||
return convertItem(context, (Item) dso);
|
||||
}
|
||||
}
|
||||
return null;
|
||||
}
|
||||
|
||||
public Model convertSite(Context context, Site site)
|
||||
throws SQLException
|
||||
{
|
||||
if (site2community == null)
|
||||
{
|
||||
log.info("Either there was a problem loading the configuration or "
|
||||
+ "linking from the repository (SITE) to the top level "
|
||||
+ "communities is disabled. Won't link from the repostitory "
|
||||
+ "(SITE) to the top level communities.");
|
||||
return null;
|
||||
}
|
||||
|
||||
Model m = ModelFactory.createDefaultModel();
|
||||
Model prefixes = this.getPrefixes();
|
||||
m.setNsPrefixes(prefixes);
|
||||
prefixes.close();
|
||||
|
||||
String myId = RDFUtil.generateIdentifier(context, site);
|
||||
if (myId == null)
|
||||
{
|
||||
return null;
|
||||
}
|
||||
|
||||
Community[] topLevelCommies = Community.findAllTop(context);
|
||||
for (Community community : topLevelCommies)
|
||||
{
|
||||
if (!RDFUtil.isPublicBoolean(context, community))
|
||||
{
|
||||
continue;
|
||||
}
|
||||
String id = RDFUtil.generateIdentifier(context, community);
|
||||
if (id == null)
|
||||
{
|
||||
continue;
|
||||
}
|
||||
for (String link : site2community)
|
||||
{
|
||||
m.add(m.createResource(myId),
|
||||
m.createProperty(link),
|
||||
m.createResource(id));
|
||||
}
|
||||
}
|
||||
|
||||
if (m.isEmpty())
|
||||
{
|
||||
log.info("There were no public sub communities we could link to.");
|
||||
m.close();
|
||||
return null;
|
||||
}
|
||||
return m;
|
||||
}
|
||||
|
||||
public Model convertCommunity(Context context, Community community)
|
||||
throws SQLException
|
||||
{
|
||||
if (community2site == null)
|
||||
{
|
||||
log.info("Either there was a problem loading the configuration or "
|
||||
+ "linking from the top level communities to the repository "
|
||||
+ "(SITE) is disabled. Won't link from the top level "
|
||||
+ "communities to the repository (SITE).");
|
||||
}
|
||||
if (community2subcommunity == null)
|
||||
{
|
||||
log.info("Either there was a problem loading the configuration or "
|
||||
+ "linking from communities to subcommunities was disabled. "
|
||||
+ "Won't link from communities to subcommunities.");
|
||||
}
|
||||
if (subcommunity2community == null)
|
||||
{
|
||||
log.info("Either there was a problem loading the configuration or "
|
||||
+ "linking from subcommunities to communities was disabled. "
|
||||
+ "Won't link from subcommunities to communities.");
|
||||
}
|
||||
if (community2collection == null)
|
||||
{
|
||||
log.info("Either there was a problem loading the configuration or "
|
||||
+ "linking from communities to collections was disabled. "
|
||||
+ "Won't link from collections to subcommunities.");
|
||||
}
|
||||
if (community2site == null && community2subcommunity == null
|
||||
&& subcommunity2community == null && community2collection == null)
|
||||
{
|
||||
return null;
|
||||
}
|
||||
|
||||
Model m = ModelFactory.createDefaultModel();
|
||||
Model prefixes = this.getPrefixes();
|
||||
m.setNsPrefixes(prefixes);
|
||||
prefixes.close();
|
||||
|
||||
String myId = RDFUtil.generateIdentifier(context, community);
|
||||
if (myId == null)
|
||||
{
|
||||
return null;
|
||||
}
|
||||
|
||||
// add all parents
|
||||
DSpaceObject[] parents = community.getAllParents();
|
||||
// check whether this is a top level community
|
||||
if (parents.length == 0)
|
||||
{
|
||||
parents = new DSpaceObject[] {Site.find(context, Site.SITE_ID)};
|
||||
}
|
||||
for (DSpaceObject parent : parents)
|
||||
{
|
||||
if (!RDFUtil.isPublicBoolean(context, parent))
|
||||
{
|
||||
continue;
|
||||
}
|
||||
|
||||
String id = RDFUtil.generateIdentifier(context, parent);
|
||||
if (id != null)
|
||||
{
|
||||
if (parent instanceof Site)
|
||||
{
|
||||
for (String link : community2site)
|
||||
{
|
||||
m.add(m.createResource(myId),
|
||||
m.createProperty(link),
|
||||
m.createResource(id));
|
||||
}
|
||||
}
|
||||
else if (parent instanceof Community)
|
||||
{
|
||||
for (String link : subcommunity2community)
|
||||
{
|
||||
m.add(m.createResource(myId),
|
||||
m.createProperty(link),
|
||||
m.createResource(id));
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// add all subcommunities
|
||||
for (Community sub : community.getSubcommunities())
|
||||
{
|
||||
if (!RDFUtil.isPublicBoolean(context, sub))
|
||||
{
|
||||
continue;
|
||||
}
|
||||
String id = RDFUtil.generateIdentifier(context, sub);
|
||||
if (id == null)
|
||||
{
|
||||
continue;
|
||||
}
|
||||
for (String link : community2subcommunity)
|
||||
{
|
||||
m.add(m.createResource(myId),
|
||||
m.createProperty(link),
|
||||
m.createResource(id));
|
||||
}
|
||||
}
|
||||
// add all collections.
|
||||
for (Collection col : community.getAllCollections())
|
||||
{
|
||||
if (!RDFUtil.isPublicBoolean(context, col))
|
||||
{
|
||||
continue;
|
||||
}
|
||||
String id = RDFUtil.generateIdentifier(context, col);
|
||||
if (id == null)
|
||||
{
|
||||
continue;
|
||||
}
|
||||
for (String link : community2collection)
|
||||
{
|
||||
m.add(m.createResource(myId),
|
||||
m.createProperty(link),
|
||||
m.createResource(id));
|
||||
}
|
||||
}
|
||||
|
||||
if (m.isEmpty())
|
||||
{
|
||||
m.close();
|
||||
return null;
|
||||
}
|
||||
return m;
|
||||
}
|
||||
|
||||
public Model convertCollection(Context context, Collection collection)
|
||||
throws SQLException
|
||||
{
|
||||
if (collection2community == null)
|
||||
{
|
||||
log.info("Either there was a problem loading the configuration or "
|
||||
+ "linking from collections to communities was disabled. "
|
||||
+ "Won't link from collections to communities.");
|
||||
}
|
||||
if (collection2item == null)
|
||||
{
|
||||
log.info("Either there was a problem loading the configuration or "
|
||||
+ "linking from collections to items was disabled. "
|
||||
+ "Won't link from collections to items.");
|
||||
}
|
||||
if (collection2community == null && collection2item == null)
|
||||
{
|
||||
return null;
|
||||
}
|
||||
|
||||
Model m = ModelFactory.createDefaultModel();
|
||||
Model prefixes = this.getPrefixes();
|
||||
m.setNsPrefixes(prefixes);
|
||||
prefixes.close();
|
||||
|
||||
String myId = RDFUtil.generateIdentifier(context, collection);
|
||||
if (myId == null)
|
||||
{
|
||||
return null;
|
||||
}
|
||||
|
||||
// add all parents
|
||||
DSpaceObject[] parents = collection.getCommunities();
|
||||
for (DSpaceObject parent : parents)
|
||||
{
|
||||
if (!RDFUtil.isPublicBoolean(context, parent))
|
||||
{
|
||||
continue;
|
||||
}
|
||||
|
||||
String id = RDFUtil.generateIdentifier(context, parent);
|
||||
if (id != null)
|
||||
{
|
||||
for (String link : collection2community)
|
||||
{
|
||||
m.add(m.createResource(myId),
|
||||
m.createProperty(link),
|
||||
m.createResource(id));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// add all items
|
||||
ItemIterator items = collection.getAllItems();
|
||||
while (items.hasNext())
|
||||
{
|
||||
String id = RDFUtil.generateIdentifier(context, items.next());
|
||||
if (id != null)
|
||||
{
|
||||
for (String link : collection2item)
|
||||
{
|
||||
m.add(m.createResource(myId),
|
||||
m.createProperty(link),
|
||||
m.createResource(id));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (m.isEmpty())
|
||||
{
|
||||
m.close();
|
||||
return null;
|
||||
}
|
||||
return m;
|
||||
}
|
||||
|
||||
public Model convertItem(Context context, Item item)
|
||||
throws SQLException
|
||||
{
|
||||
if (item2collection == null)
|
||||
{
|
||||
log.info("Either there was a problem loading the configuration or "
|
||||
+ "linking from items to collections was disabled. "
|
||||
+ "Won't link from items to collections.");
|
||||
}
|
||||
if (item2bitstream == null)
|
||||
{
|
||||
log.info("Either there was a problem loading the configuration or "
|
||||
+ "linking from items to bitstreams was disabled. "
|
||||
+ "Won't link from items to bitstreams.");
|
||||
}
|
||||
if (item2collection == null && item2bitstream == null)
|
||||
{
|
||||
return null;
|
||||
}
|
||||
|
||||
Model m = ModelFactory.createDefaultModel();
|
||||
Model prefixes = this.getPrefixes();
|
||||
m.setNsPrefixes(prefixes);
|
||||
prefixes.close();
|
||||
|
||||
String myId = RDFUtil.generateIdentifier(context, item);
|
||||
if (myId == null)
|
||||
{
|
||||
return null;
|
||||
}
|
||||
|
||||
// add all parents
|
||||
Collection[] collections = item.getCollections();
|
||||
for (DSpaceObject parent : collections)
|
||||
{
|
||||
if (!RDFUtil.isPublicBoolean(context, parent))
|
||||
{
|
||||
continue;
|
||||
}
|
||||
|
||||
String id = RDFUtil.generateIdentifier(context, parent);
|
||||
if (id != null)
|
||||
{
|
||||
for (String link : item2collection)
|
||||
{
|
||||
m.add(m.createResource(myId),
|
||||
m.createProperty(link),
|
||||
m.createResource(id));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// add all items
|
||||
for(Bundle bundle : item.getBundles())
|
||||
{
|
||||
// currently link only the original files
|
||||
// TODO: Discuss if LICENSEs, THUMBNAILs and/or extracted TEXTs
|
||||
// should be linked/exported as well (and if sutch a feature should
|
||||
// be configurable).
|
||||
if (bundle.getName().equals("ORIGINAL"))
|
||||
{
|
||||
for (Bitstream bs : bundle.getBitstreams())
|
||||
{
|
||||
if (RDFUtil.isPublicBoolean(context, bs))
|
||||
{
|
||||
String url = bitstreamURI(bs);
|
||||
if (url != null)
|
||||
{
|
||||
for (String link : item2bitstream)
|
||||
{
|
||||
m.add(m.createResource(myId),
|
||||
m.createProperty(link),
|
||||
m.createResource(url));
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (m.isEmpty())
|
||||
{
|
||||
m.close();
|
||||
return null;
|
||||
}
|
||||
return m;
|
||||
}
|
||||
|
||||
/**
|
||||
* This methods generataes a link to the provieded Bitstream.
|
||||
* As bitstreams currently don't get Persistent Identifier in DSpace, we have
|
||||
* to link them using a link to the repository. This link should work with
|
||||
* JSPUI and XMLUI (at least it does in DSpace 4.x).
|
||||
* @param bitstream Bitstream for which a URL should be generated.
|
||||
* @return The link to the URL or null if the Bistream is is a Community or
|
||||
* Collection logo.
|
||||
* @throws SQLException
|
||||
*/
|
||||
public String bitstreamURI(Bitstream bitstream)
|
||||
throws SQLException
|
||||
{
|
||||
DSpaceObject parent = bitstream.getParentObject();
|
||||
|
||||
if (!(parent instanceof Item))
|
||||
{
|
||||
// Bitstream is a community or collection logo.
|
||||
// we currently ignore those
|
||||
return null;
|
||||
}
|
||||
String dspaceURL = configurationService.getProperty("dspace.url");
|
||||
String link = "";
|
||||
try
|
||||
{
|
||||
// this currently (DSpace 4.1) works with xmlui and jspui.
|
||||
link = dspaceURL + "/bitstream/" + parent.getHandle() + "/"
|
||||
+ bitstream.getSequenceID() + "/"
|
||||
+ Util.encodeBitstreamName(bitstream.getName(), Constants.DEFAULT_ENCODING);
|
||||
}
|
||||
catch (UnsupportedEncodingException ex)
|
||||
{
|
||||
throw new RuntimeException("DSpace's default encoding is not supported.", ex);
|
||||
}
|
||||
return link;
|
||||
}
|
||||
|
||||
@Override
|
||||
public boolean supports(int type)
|
||||
{
|
||||
switch (type)
|
||||
{
|
||||
case (Constants.COLLECTION) :
|
||||
return true;
|
||||
case (Constants.COMMUNITY) :
|
||||
return true;
|
||||
case (Constants.ITEM) :
|
||||
return true;
|
||||
case (Constants.SITE) :
|
||||
return true;
|
||||
default :
|
||||
return false;
|
||||
}
|
||||
}
|
||||
}
|
||||
@@ -16,7 +16,7 @@ converter = org.dspace.rdf.conversion.RDFConverterImpl
|
||||
# influence the result of the conversion.
|
||||
converter.plugins = org.dspace.rdf.conversion.StaticDSOConverterPlugin, \
|
||||
org.dspace.rdf.conversion.MetadataConverterPlugin, \
|
||||
org.dspace.rdf.conversion.DSORelationsConverterPlugin
|
||||
org.dspace.rdf.conversion.SimpleDSORelationsConverterPlugin
|
||||
converter.DSOtypes = SITE, COMMUNITY, COLLECTION, ITEM
|
||||
|
||||
# Configure which class to use to store the converted data.
|
||||
@@ -67,3 +67,23 @@ constant.data.SITE = ${dspace.dir}/config/modules/rdf/constant-data-site.ttl
|
||||
metadata.mappings = ${dspace.dir}/config/modules/rdf/metadata-rdf-mapping.ttl
|
||||
metadata.schema = file://${dspace.dir}/config/modules/rdf/metadata-rdf-schema.ttl
|
||||
metadata.prefixes = ${dspace.dir}/config/modules/rdf/metadata-prefixes.ttl
|
||||
|
||||
## SimpleDSORelationsConverterPlugin ##
|
||||
simplerelations.configuration = ${dspace.dir}/config/modules/rdf/simple-relations.cfg
|
||||
simplerelations.prefixes = ${dspace.dir}/config/modules/rdf/simple-relations-prefixes.ttl
|
||||
simplerelations.site2community = http://purl.org/dc/terms/hasPart, http://digital-repositories.org/ontology/dspace/0.1#site2community
|
||||
simplerelations.community2site = http://purl.org/dc/terms/isPartOf, http://digital-repositories.org/ontology/dspace/0.1#community2site
|
||||
simplerelations.community2subcommunity = http://purl.org/dc/terms/hasPart, http://digital-repositories.org/ontology/dspace/0.1#commnity2subcommunity
|
||||
simplerelations.subcommunity2community = http://purl.org/dc/terms/isPartOf, http://digital-repositories.org/ontology/dspace/0.1#subcommunity2community
|
||||
simplerelations.community2collection = http://purl.org/dc/terms/hasPart, \
|
||||
http://digital-repositories.org/ontology/dspace/0.1#community2collection
|
||||
simplerelations.collection2community = http://purl.org/dc/terms/isPartOf, \
|
||||
http://digital-repositories.org/ontology/dspace/0.1#collection2community
|
||||
simplerelations.collection2item = http://purl.org/dc/terms/hasPart,\
|
||||
http://digital-repositories.org/ontology/dspace/0.1#collection2item
|
||||
simplerelations.item2collection = http://purl.org/dc/terms/isPartOf,\
|
||||
http://digital-repositories.org/ontology/dspace/0.1#item2collection
|
||||
# TODO: user other property here? perhaps we should use something like the following?
|
||||
# http://prismstandard.org/namespaces/basic/3.0/url
|
||||
simplerelations.item2bitstream = http://purl.org/dc/terms/hasPart,\
|
||||
http://digital-repositories.org/ontology/dspace/0.1#item2bitstream
|
||||
|
||||
2
dspace/config/modules/rdf/simple-relations-prefixes.ttl
Normal file
2
dspace/config/modules/rdf/simple-relations-prefixes.ttl
Normal file
@@ -0,0 +1,2 @@
|
||||
@prefix dspace: <http://digital-repositories.org/ontology/dspace/0.1#> .
|
||||
@prefix dcterms: <http://purl.org/dc/terms/> .
|
||||
Reference in New Issue
Block a user