/**
* 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.content.crosswalk;
import java.io.IOException;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import org.apache.commons.lang.ArrayUtils;
import org.dspace.authorize.AuthorizeException;
import org.dspace.content.Metadatum;
import org.dspace.content.DSpaceObject;
import org.dspace.content.Item;
import org.dspace.core.Constants;
import org.jdom.Element;
import org.jdom.Namespace;
/**
* DIM dissemination crosswalk
* <p>
* Produces the metadata encoded in DSpace Intermediate Format, without the overhead of XSLT processing.
*
* @author Alexey Maslov
* @version $Revision: 1 $
*/
public class DIMDisseminationCrosswalk
implements DisseminationCrosswalk
{
// Non-existant XSD schema
public static final String DIM_XSD = "null";
// Namespaces
public static final Namespace DIM_NS =
Namespace.getNamespace("dim", "http://www.dspace.org/xmlns/dspace/dim");
private static final Namespace namespaces[] = { DIM_NS };
public Namespace[] getNamespaces()
{
return (Namespace[]) ArrayUtils.clone(namespaces);
}
/* No schema for DIM */
public String getSchemaLocation()
{
return DIM_NS.getURI() + " " + DIM_XSD;
}
public Element disseminateElement(DSpaceObject dso) throws CrosswalkException, IOException, SQLException, AuthorizeException
{
if (dso.getType() != Constants.ITEM)
{
throw new CrosswalkObjectNotSupported("DIMDisseminationCrosswalk can only crosswalk an Item.");
}
Item item = (Item)dso;
Metadatum[] dc = item.getMetadata(Item.ANY, Item.ANY, Item.ANY, Item.ANY);
Element dim = new Element("dim", DIM_NS);
for (int i = 0; i < dc.length; i++)
{
Element field = new Element("field", DIM_NS);
field.setAttribute("mdschema", dc[i].schema);
field.setAttribute("element", dc[i].element);
if (dc[i].qualifier != null)
{
field.setAttribute("qualifier", dc[i].qualifier);
}
if (dc[i].language != null)
{
field.setAttribute("lang", dc[i].language);
}
if (dc[i].value != null)
{
field.setText(dc[i].value);
}
dim.addContent(field);
}
return dim;
}
public List<Element> disseminateList(DSpaceObject dso) throws CrosswalkException, IOException, SQLException, AuthorizeException
{
List<Element> result = new ArrayList<Element>(1);
result.add(disseminateElement(dso));
return result;
}
/* Only interested in disseminating items at this time */
public boolean canDisseminate(DSpaceObject dso)
{
return (dso.getType() == Constants.ITEM);
}
public boolean preferList()
{
return false;
}
}