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.ServletException;
048    import javax.servlet.http.HttpServletRequest;
049    import javax.servlet.http.HttpServletResponse;
050    
051    import org.deegree.enterprise.control.ajax.ResponseHandler;
052    import org.deegree.enterprise.control.ajax.WebEvent;
053    import org.deegree.framework.log.ILogger;
054    import org.deegree.framework.log.LoggerFactory;
055    import org.deegree.framework.util.HttpUtils;
056    import org.deegree.framework.xml.NamespaceContext;
057    import org.deegree.framework.xml.XMLFragment;
058    import org.deegree.framework.xml.XMLTools;
059    import org.deegree.ogcbase.CommonNamespaces;
060    import org.w3c.dom.Element;
061    
062    /**
063     * 
064     * 
065     * 
066     * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
067     * @author last edited by: $Author: apoth $
068     * 
069     * @version $Revision: 30690 $, $Date: 2011-05-06 10:23:46 +0200 (Fr, 06 Mai 2011) $
070     */
071    public class GetMetadataListListener extends AbstractMetadataListener {
072    
073        private static final ILogger LOG = LoggerFactory.getLogger( GetMetadataListListener.class );
074    
075        private static NamespaceContext nsc = CommonNamespaces.getNamespaceContext();
076    
077        /*
078         * (non-Javadoc)
079         * 
080         * @see org.deegree.portal.cataloguemanager.control.AbstractMetadataListener#actionPerformed(
081         * org.deegree.enterprise.control.ajax.WebEvent, org.deegree.portal.cataloguemanager.control.ResponseHandler)
082         */
083        @SuppressWarnings("unchecked")
084        public void actionPerformed( WebEvent event, ResponseHandler responseHandler )
085                                throws IOException {
086            List<String[]> rows = new ArrayList<String[]>();
087            CatalogueManagerConfiguration config = getCatalogueManagerConfiguration( event );
088            String addr = config.getCatalogueURL();
089            URL url = getClass().getResource( "GetRecords.xml" );
090            // read all metadata sets from a CSW
091            Enumeration<String> en = ( (HttpServletRequest) getRequest() ).getHeaderNames();
092            Map<String, String> map = new HashMap<String, String>();
093            while ( en.hasMoreElements() ) {
094                String name = (String) en.nextElement();
095                if ( !name.equalsIgnoreCase( "accept-encoding" ) && !name.equalsIgnoreCase( "content-length" )
096                     && !name.equalsIgnoreCase( "user-agent" ) ) {
097                    map.put( name, ( (HttpServletRequest) getRequest() ).getHeader( name ) );
098                }
099            }
100            InputStream is = HttpUtils.performHttpPost( addr, url.openStream(), 60000, null, null, "text/xml", null, map ).getResponseBodyAsStream();
101            try {
102                XMLFragment xml = new XMLFragment();
103                xml.load( is, addr );
104                String xpath = "./csw202:SearchResults/gmd:MD_Metadata";
105                List<Element> mdSets = XMLTools.getElements( xml.getRootElement(), xpath, nsc );
106                for ( Element element : mdSets ) {
107                    String[] s = new String[3];
108                    xpath = "./gmd:fileIdentifier/gco:CharacterString";
109                    s[0] = XMLTools.getNodeAsString( element, xpath, nsc, "" );
110                    xpath = "./gmd:identificationInfo/gmd:MD_DataIdentification/gmd:citation/gmd:CI_Citation/gmd:title/gco:CharacterString";
111                    s[1] = XMLTools.getNodeAsString( element, xpath, nsc, "" );
112                    xpath = "./gmd:identificationInfo/gmd:MD_DataIdentification/gmd:abstract/gco:CharacterString";
113                    s[2] = XMLTools.getNodeAsString( element, xpath, nsc, "" );
114                    rows.add( s );
115                }
116            } catch ( Exception e ) {
117                LOG.logError( e );
118                throw new IOException( e.getMessage() );
119            }
120    
121            HttpServletRequest request = ( (HttpServletRequest) event.getSource() );
122            request.setAttribute( "METADATASETS", rows );
123    
124            try {
125                HttpServletResponse resp = responseHandler.getHttpServletResponse();
126                // result page uses UTF-8 encoding
127                resp.setCharacterEncoding( "UTF-8" );
128                request.getRequestDispatcher( '/' + getNextPage() ).forward( request, resp );
129            } catch ( ServletException e ) {
130                throw new IOException( e.getMessage() );
131            }
132        }
133    
134    }