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.net.URL;
040    import java.net.URLEncoder;
041    import java.nio.charset.Charset;
042    import java.util.Calendar;
043    import java.util.Enumeration;
044    import java.util.HashMap;
045    import java.util.List;
046    import java.util.Map;
047    
048    import javax.servlet.http.HttpServletRequest;
049    
050    import org.apache.commons.httpclient.HttpMethod;
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.util.TimeTools;
057    import org.deegree.framework.xml.NamespaceContext;
058    import org.deegree.framework.xml.XMLFragment;
059    import org.deegree.framework.xml.XMLParsingException;
060    import org.deegree.framework.xml.XMLTools;
061    import org.deegree.ogcbase.CommonNamespaces;
062    import org.deegree.portal.cataloguemanager.model.ExceptionBean;
063    import org.deegree.portal.cataloguemanager.model.MetadataBean;
064    
065    /**
066     * 
067     * 
068     * 
069     * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
070     * @author last edited by: $Author: apoth $
071     * 
072     * @version $Revision: 30690 $, $Date: 2011-05-06 10:23:46 +0200 (Fr, 06 Mai 2011) $
073     */
074    public class LoadMetadataSetListener extends AbstractMetadataListener {
075    
076        private static ILogger LOG = LoggerFactory.getLogger( LoadMetadataSetListener.class );
077    
078        private static String GRBID = "request=GetRecordById&OUTPUTSCHEMA=http://www.isotc211.org/2005/gmd&service=CSW&version=2.0.2&ID=";
079    
080        private static String PARAM_ID = "ID";
081    
082        private XMLFragment xml;
083    
084        private static NamespaceContext nsContext = CommonNamespaces.getNamespaceContext();
085    
086        @SuppressWarnings("unchecked")
087        @Override
088        public void actionPerformed( WebEvent event, ResponseHandler responseHandler )
089                                throws IOException {
090    
091            CatalogueManagerConfiguration config = getCatalogueManagerConfiguration( event );
092            Map<String, String> param = event.getParameter();
093            LOG.logDebug( "load metadataset request param: ", param );
094            String charset = event.getCharacterEncoding();
095            if ( charset == null ) {
096                charset = Charset.defaultCharset().displayName();
097            }
098    
099            String s = URLEncoder.encode( param.get( PARAM_ID ), charset );
100            URL url = new URL( config.getCatalogueURL() + '?' + GRBID + s );
101            LOG.logDebug( "load metadataset: ", url );
102            try {
103                Enumeration<String> en = ( (HttpServletRequest) getRequest() ).getHeaderNames();
104                Map<String, String> map = new HashMap<String, String>();
105                while ( en.hasMoreElements() ) {
106                    String name = (String) en.nextElement();
107                    if ( !name.equalsIgnoreCase( "accept-encoding" ) && !name.equalsIgnoreCase( "content-length" )
108                         && !name.equalsIgnoreCase( "user-agent" ) ) {
109                        map.put( name, ( (HttpServletRequest) getRequest() ).getHeader( name ) );
110                    }
111                }
112                HttpMethod get = HttpUtils.performHttpGet( url.toExternalForm(), null, 60000, null, null, map );
113                xml = new XMLFragment();
114                xml.load( get.getResponseBodyAsStream(), url.toExternalForm() );
115                xml = new XMLFragment( XMLTools.getFirstChildElement( xml.getRootElement() ) );
116            } catch ( Exception e ) {
117                LOG.logError( e.getMessage(), e );
118                ExceptionBean eb = new ExceptionBean( getClass().getName(), e.getMessage() );
119                responseHandler.writeAndClose( true, eb );
120                return;
121            }
122            if ( LOG.getLevel() == ILogger.LOG_DEBUG ) {
123                LOG.logDebug( xml.getAsPrettyString() );
124            }
125    
126            event.getSession().setAttribute( "MD_TEMPLATE", xml );
127    
128            MetadataBean metadata = new MetadataBean();
129    
130            if ( param.get( "ISTEMPLATE" ) == null || "false".equalsIgnoreCase( param.get( "ISTEMPLATE" ) ) ) {
131                String tmp = getValue( config.getXPath( "datasetTitle" ) );
132                if ( "".equals( tmp ) ) {
133                    tmp = getValue( config.getXPath( "seviceTitle" ) );
134                }
135                metadata.setDatasetTitle( tmp );
136                metadata.setIdentifier( getValue( config.getXPath( "identifier" ) ) );
137                metadata.setAbstract_( getValue( config.getXPath( "abstract_" ) ) );
138            }
139            String tmp = getValue( config.getXPath( "begin" ) );
140            if ( tmp != null && tmp.trim().length() > 0 ) {
141                Calendar cal = TimeTools.createCalendar( tmp );
142                metadata.setBegin( toISO( cal ) );
143            }
144            metadata.setContactCity( getValue( config.getXPath( "contactCity" ) ) );
145            metadata.setContactCountry( getValue( config.getXPath( "contactCountry" ) ) );
146            metadata.setContactDeliveryPoint( getValue( config.getXPath( "contactDeliveryPoint" ) ) );
147            metadata.setContactEmailAddress( getValue( config.getXPath( "contactEmailAddress" ) ) );
148            metadata.setContactFacsimile( getValue( config.getXPath( "contactFacsimile" ) ) );
149            metadata.setContactIndividualName( getValue( config.getXPath( "contactIndividualName" ) ) );
150            metadata.setContactOrganisationName( getValue( config.getXPath( "contactOrganisationName" ) ) );
151            metadata.setContactPostalCode( getValue( config.getXPath( "contactPostalCode" ) ) );
152            metadata.setContactRole( getValue( config.getXPath( "contactRole" ) ) );
153            metadata.setContactVoice( getValue( config.getXPath( "contactVoice" ) ) );
154            tmp = getValue( config.getXPath( "creation" ) );
155            if ( tmp != null && tmp.trim().length() > 0 ) {
156                Calendar cal = TimeTools.createCalendar( tmp );
157                metadata.setCreation( toISO( cal ) );
158            }
159            metadata.setCrs( getValue( config.getXPath( "crs" ) ) );
160            tmp = getValue( config.getXPath( "end" ) );
161            if ( tmp != null && tmp.trim().length() > 0 ) {
162                Calendar cal = TimeTools.createCalendar( tmp );
163                metadata.setEnd( toISO( cal ) );
164            }
165            metadata.setGeogrDescription( getValue( config.getXPath( "geogrDescription" ) ) );
166            metadata.setHlevel( getValue( config.getXPath( "hlevel" ) ) );
167    
168            metadata.setKeywords( getValues( config.getXPath( "keywords" ) ) );
169            metadata.setParentId( getValue( config.getXPath( "parentId" ) ) );
170            metadata.setPocCity( getValue( config.getXPath( "pocCity" ) ) );
171            metadata.setPocCountry( getValue( config.getXPath( "pocCountry" ) ) );
172            metadata.setPocDeliveryPoint( getValue( config.getXPath( "pocDeliveryPoint" ) ) );
173            metadata.setPocEmailAddress( getValue( config.getXPath( "pocEmailAddress" ) ) );
174            metadata.setPocFacsimile( getValue( config.getXPath( "pocFacsimile" ) ) );
175            metadata.setPocIndividualName( getValue( config.getXPath( "pocIndividualName" ) ) );
176            metadata.setPocOrganisationName( getValue( config.getXPath( "pocOrganisationName" ) ) );
177            metadata.setPocPostalCode( getValue( config.getXPath( "pocPostalCode" ) ) );
178            metadata.setPocRole( getValue( config.getXPath( "pocRole" ) ) );
179            metadata.setPocVoice( getValue( config.getXPath( "pocVoice" ) ) );
180            tmp = getValue( config.getXPath( "publication" ) );
181            if ( tmp != null && tmp.trim().length() > 0 ) {
182                Calendar cal = TimeTools.createCalendar( tmp );
183                metadata.setPublication( toISO( cal ) );
184            }
185            tmp = getValue( config.getXPath( "revision" ) );
186            if ( tmp != null && tmp.trim().length() > 0 ) {
187                Calendar cal = TimeTools.createCalendar( tmp );
188                metadata.setRevision( toISO( cal ) );
189            }
190            metadata.setScale( getValue( config.getXPath( "scale" ) ) );
191            metadata.setTopCat( getValue( config.getXPath( "topCat" ) ) );
192    
193            tmp = getValue( config.getXPath( "begin" ) );
194            if ( tmp.length() == 0 ) {
195                tmp = getValue( config.getXPath( "begin2" ) );
196            }
197            Calendar cal = TimeTools.createCalendar( tmp );
198            metadata.setBegin( toISO( cal ) );
199    
200            tmp = getValue( config.getXPath( "end" ) );
201            if ( tmp.length() == 0 ) {
202                tmp = getValue( config.getXPath( "end2" ) );
203            }
204            cal = TimeTools.createCalendar( tmp );
205            metadata.setEnd( toISO( cal ) );
206            metadata.setLineage( getValue( config.getXPath( "lineage" ) ) );
207    
208            metadata.setTransferOnline( getValue( config.getXPath( "transferOptOnline" ) ) );
209    
210            s = getValue( config.getXPath( "accessConstraints" ) );
211            if ( s == null ) {
212                s = getValue( config.getXPath( "srvAccessConstraints" ) );
213            }
214            metadata.setAccessConstraints( s );
215    
216            // result page uses UTF-8 encoding
217            String charEnc = Charset.defaultCharset().displayName();
218            responseHandler.setContentType( "application/json; charset=" + charEnc );
219            responseHandler.writeAndClose( true, metadata );
220        }
221    
222        private String toISO( Calendar cal ) {
223            StringBuffer sb = new StringBuffer();
224            sb.append( Integer.toString( cal.get( Calendar.YEAR ) ) ).append( '-' );
225            sb.append( Integer.toString( cal.get( Calendar.MONTH ) + 1 ) ).append( '-' );
226            sb.append( Integer.toString( cal.get( Calendar.DAY_OF_MONTH ) ) );
227            return sb.toString();
228        }
229    
230        private String getValue( String xPath )
231                                throws IOException {
232            try {
233                return XMLTools.getNodeAsString( xml.getRootElement(), xPath, nsContext, "" );
234            } catch ( XMLParsingException e ) {
235                throw new IOException( e.getMessage() );
236            }
237        }
238    
239        private List<String> getValues( String xPath )
240                                throws IOException {
241            try {
242                return XMLTools.getNodesAsStringList( xml.getRootElement(), xPath, nsContext );
243            } catch ( XMLParsingException e ) {
244                throw new IOException( e.getMessage() );
245            }
246        }
247    }