001 //$HeadURL: svn+ssh://developername@svn.wald.intevation.org/deegree/base/trunk/resources/eclipse/files_template.xml $
002 /*----------------------------------------------------------------------------
003 This file is part of deegree, http://deegree.org/
004 Copyright (C) 2001-2009 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.util.List;
040 import java.util.Map;
041 import java.util.UUID;
042
043 import org.deegree.enterprise.control.ajax.ResponseHandler;
044 import org.deegree.enterprise.control.ajax.WebEvent;
045 import org.deegree.framework.log.ILogger;
046 import org.deegree.framework.log.LoggerFactory;
047 import org.deegree.framework.util.Pair;
048 import org.deegree.framework.xml.XMLFragment;
049 import org.deegree.ogcwebservices.csw.discovery.GetRecords;
050 import org.deegree.ogcwebservices.csw.discovery.Query;
051 import org.deegree.ogcwebservices.csw.discovery.GetRecords.RESULT_TYPE;
052 import org.deegree.portal.cataloguemanager.model.ExceptionBean;
053
054 /**
055 * TODO add class documentation here
056 *
057 * @author <a href="mailto:name@deegree.org">Andreas Poth</a>
058 * @author last edited by: $Author: admin $
059 *
060 * @version $Revision: $, $Date: $
061 */
062 public class PageingListener extends AbstractSearchListener {
063
064 private static final ILogger LOG = LoggerFactory.getLogger( PageingListener.class );
065
066 /*
067 * (non-Javadoc)
068 *
069 * @see
070 * org.deegree.enterprise.control.ajax.AbstractListener#actionPerformed(org.deegree.enterprise.control.ajax.WebEvent
071 * , org.deegree.enterprise.control.ajax.ResponseHandler)
072 */
073 @SuppressWarnings("unchecked")
074 public void actionPerformed( WebEvent event, ResponseHandler responseHandler )
075 throws IOException {
076
077 config = getCatalogueManagerConfiguration( event );
078 Map<String, String> param = event.getParameter();
079
080 GetRecords getRecords = (GetRecords) event.getSession().getAttribute( CURRENTSEARCH );
081 int counter = Integer.parseInt( param.get( "counter" ) );
082
083 if ( counter < 0 ) {
084 // '<' button has been pressed
085 int tmp = (Integer) event.getSession().getAttribute( COUNTER );
086 counter = tmp - 1;
087 if ( counter < 0 ) {
088 counter = 0;
089 }
090 } else if ( counter > 999 ) {
091 // '>' button has been pressed
092 int tmp = (Integer) event.getSession().getAttribute( COUNTER );
093 counter = tmp + 1;
094 if ( counter > 4 ) {
095 counter = 4;
096 }
097 }
098 Query query = getRecords.getQuery();
099 // in/decrease start position for query
100 getRecords = new GetRecords( UUID.randomUUID().toString(), "2.0.2", null, null, RESULT_TYPE.RESULTS,
101 "application/xml", "http://www.isotc211.org/2005/gmd",
102 1 + ( counter * config.getStepSize() ), config.getStepSize(), -1, null, query );
103
104 List<Pair<String, XMLFragment>> result;
105 try {
106 result = performQuery( getRecords );
107 } catch ( Throwable e ) {
108 LOG.logError( e );
109 ExceptionBean bean = new ExceptionBean( this.getClass().getName(), e.getMessage() );
110 responseHandler.writeAndClose( true, bean );
111 return;
112 }
113
114 List<SearchResultBean> formattedResult = null;
115 try {
116 formattedResult = formatResult( result );
117 } catch ( Exception e ) {
118 LOG.logError( e );
119 ExceptionBean bean = new ExceptionBean( this.getClass().getName(), e.getMessage() );
120 responseHandler.writeAndClose( true, bean );
121 return;
122 }
123
124 // store search meta informations to be used for pageing
125 event.getSession().setAttribute( SEARCHRESULTINFO, searchResultInfos );
126
127 int c = 0;
128 for ( SearchResultInfo sri : searchResultInfos ) {
129 c += sri.getNumberOfRecordsMatched();
130 }
131
132 event.getSession().setAttribute( CURRENTSEARCH, getRecords );
133 event.getSession().setAttribute( COUNTER, counter );
134
135 responseHandler.writeAndClose( false, new Object[] { formattedResult, new Integer( c ), new Integer( counter ) } );
136
137 }
138
139 }