/**
* 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.webui.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.log4j.Logger;
import org.dspace.app.bulkedit.MetadataExport;
import org.dspace.app.bulkedit.DSpaceCSV;
import org.dspace.app.webui.util.JSPManager;
import org.dspace.authorize.AuthorizeException;
import org.dspace.core.*;
import org.dspace.content.DSpaceObject;
import org.dspace.content.ItemIterator;
import org.dspace.content.Collection;
import org.dspace.content.Community;
import org.dspace.handle.HandleManager;
/**
* Servlet to export metadata as CSV (comma separated values)
*
* @author Stuart Lewis
*/
public class MetadataExportServlet extends DSpaceServlet
{
/** log4j category */
private static Logger log = Logger.getLogger(MetadataExportServlet.class);
/**
* Respond to a post request
*
* @param context a DSpace Context object
* @param request the HTTP request
* @param response the HTTP response
*
* @throws ServletException
* @throws IOException
* @throws SQLException
* @throws AuthorizeException
*/
protected void doDSPost(Context context, HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException,
SQLException, AuthorizeException
{
// Get the handle requested for the export
String handle = request.getParameter("handle");
MetadataExport exporter = null;
if (handle != null)
{
log.info(LogManager.getHeader(context, "metadataexport", "exporting_handle:" + handle));
DSpaceObject thing = HandleManager.resolveToObject(context, handle);
if (thing != null)
{
if (thing.getType() == Constants.ITEM)
{
List<Integer> item = new ArrayList<Integer>();
item.add(thing.getID());
exporter = new MetadataExport(context, new ItemIterator(context, item), false);
}
else if (thing.getType() == Constants.COLLECTION)
{
Collection collection = (Collection)thing;
ItemIterator toExport = collection.getAllItems();
exporter = new MetadataExport(context, toExport, false);
}
else if (thing.getType() == Constants.COMMUNITY)
{
exporter = new MetadataExport(context, (Community)thing, false);
}
if (exporter != null)
{
// Perform the export
DSpaceCSV csv = exporter.export();
// Return the csv file
response.setContentType("text/csv; charset=UTF-8");
String filename = handle.replaceAll("/", "-") + ".csv";
response.setHeader("Content-Disposition", "attachment; filename=" + filename);
PrintWriter out = response.getWriter();
out.write(csv.toString());
out.flush();
out.close();
log.info(LogManager.getHeader(context, "metadataexport", "exported_file:" + filename));
return;
}
}
}
// Something has gone wrong
JSPManager.showIntegrityError(request, response);
}
}