001    //$HeadURL: 
002    /*----------------------------------------------------------------------------
003     This file is part of deegree, http://deegree.org/
004     Copyright (C) 2001-2010 by:
005     - Department of Geography, University of Bonn -
006     and
007     - lat/lon GmbH -
008    
009     This library is free software; you can redistribute it and/or modify it under
010     the terms of the GNU Lesser General Public License as published by the Free
011     Software Foundation; either version 2.1 of the License, or (at your option)
012     any later version.
013     This library is distributed in the hope that it will be useful, but WITHOUT
014     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
015     FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
016     details.
017     You should have received a copy of the GNU Lesser General Public License
018     along with this library; if not, write to the Free Software Foundation, Inc.,
019     59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
020    
021     Contact information:
022    
023     lat/lon GmbH
024     Aennchenstr. 19, 53177 Bonn
025     Germany
026     http://lat-lon.de/
027    
028     Department of Geography, University of Bonn
029     Prof. Dr. Klaus Greve
030     Postfach 1147, 53001 Bonn
031     Germany
032     http://www.geographie.uni-bonn.de/deegree/
033    
034     e-mail: info@deegree.org
035     ----------------------------------------------------------------------------*/
036    package org.deegree.portal.cataloguemanager.control;
037    
038    import java.io.IOException;
039    import java.io.InputStream;
040    import java.net.URL;
041    import java.util.ArrayList;
042    import java.util.Enumeration;
043    import java.util.HashMap;
044    import java.util.List;
045    import java.util.Map;
046    
047    import javax.servlet.http.HttpServletRequest;
048    
049    import org.deegree.enterprise.control.ajax.ResponseHandler;
050    import org.deegree.enterprise.control.ajax.WebEvent;
051    import org.deegree.framework.log.ILogger;
052    import org.deegree.framework.log.LoggerFactory;
053    import org.deegree.framework.util.HttpUtils;
054    import org.deegree.framework.xml.NamespaceContext;
055    import org.deegree.framework.xml.XMLFragment;
056    import org.deegree.framework.xml.XMLTools;
057    import org.deegree.ogcbase.CommonNamespaces;
058    import org.w3c.dom.Element;
059    
060    /**
061     * 
062     * 
063     * 
064     * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
065     * @author last edited by: $Author: apoth $
066     * 
067     * @version $Revision: 30690 $, $Date: 2011-05-06 10:23:46 +0200 (Fr, 06 Mai 2011) $
068     */
069    public class GetParentsListener extends AbstractMetadataListener {
070    
071        private static final ILogger LOG = LoggerFactory.getLogger( GetParentsListener.class );
072    
073        private static NamespaceContext nsc = CommonNamespaces.getNamespaceContext();
074    
075        /*
076         * (non-Javadoc)
077         * 
078         * @see org.deegree.portal.cataloguemanager.control.AbstractMetadataListener#actionPerformed(
079         * org.deegree.enterprise.control.ajax.WebEvent, org.deegree.portal.cataloguemanager.control.ResponseHandler)
080         */
081        @SuppressWarnings("unchecked")
082        public void actionPerformed( WebEvent event, ResponseHandler responseHandler )
083                                throws IOException {
084            List<String> parents = new ArrayList<String>();
085            CatalogueManagerConfiguration config = getCatalogueManagerConfiguration( event );
086            String addr = config.getCatalogueURL();
087            URL url = getClass().getResource( "GetRecordsSeries.xml" );
088            // read all metadata series from a CSW
089            LOG.logInfo( "CSW Address: ", addr );
090            Enumeration<String> en = ( (HttpServletRequest) getRequest() ).getHeaderNames();
091            Map<String, String> map = new HashMap<String, String>();
092            while ( en.hasMoreElements() ) {
093                String name = (String) en.nextElement();
094                if ( !name.equalsIgnoreCase( "accept-encoding" ) && !name.equalsIgnoreCase( "content-length" )
095                     && !name.equalsIgnoreCase( "user-agent" ) ) {
096                    map.put( name, ( (HttpServletRequest) getRequest() ).getHeader( name ) );
097                }
098            }
099            InputStream is = HttpUtils.performHttpPost( addr, url.openStream(), 60000, null, null, "text/xml", null, map ).getResponseBodyAsStream();
100            try {
101                XMLFragment xml = new XMLFragment();
102                xml.load( is, addr );
103                String xpath = "./csw202:SearchResults/gmd:MD_Metadata";
104                List<Element> mdSets = XMLTools.getElements( xml.getRootElement(), xpath, nsc );
105                for ( Element element : mdSets ) {
106                    xpath = "./gmd:fileIdentifier/gco:CharacterString";
107                    String s1 = XMLTools.getNodeAsString( element, xpath, nsc, "" );
108                    xpath = "./gmd:identificationInfo/gmd:MD_DataIdentification/gmd:citation/gmd:CI_Citation/gmd:title/gco:CharacterString";
109                    String s2 = XMLTools.getNodeAsString( element, xpath, nsc, "" );
110                    parents.add( s1 + ';' + s2 );
111                }
112            } catch ( Exception e ) {
113                LOG.logError( e );
114                throw new IOException( e.getMessage() );
115            }
116            responseHandler.writeAndClose( false, parents );
117        }
118    
119    }