//=============================================================================
//=== Copyright (C) 2001-2005 Food and Agriculture Organization of the
//=== United Nations (FAO-UN), United Nations World Food Programme (WFP)
//=== and United Nations Environment Programme (UNEP)
//===
//=== This program is free software; you can redistribute it and/or modify
//=== it under the terms of the GNU General Public License as published by
//=== the Free Software Foundation; either version 2 of the License, or (at
//=== your option) any later version.
//===
//=== This program is distributed in the hope that it will be useful, but
//=== WITHOUT ANY WARRANTY; without even the implied warranty of
//=== MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
//=== General Public License for more details.
//===
//=== You should have received a copy of the GNU General Public License
//=== along with this program; if not, write to the Free Software
//=== Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//===
//=== Contact: Jeroen Ticheler - FAO - Viale delle Terme di Caracalla 2,
//=== Rome - Italy. email: GeoNetwork@fao.org
//==============================================================================
package org.fao.geonet.services.thesaurus;
import jeeves.constants.Jeeves;
import jeeves.interfaces.Service;
import jeeves.server.ServiceConfig;
import jeeves.server.context.ServiceContext;
import org.fao.geonet.utils.Log;
import org.fao.geonet.Util;
import org.fao.geonet.GeonetContext;
import org.fao.geonet.constants.Geonet;
import org.fao.geonet.kernel.ThesaurusManager;
import org.fao.geonet.kernel.search.KeywordsSearcher;
import org.fao.geonet.kernel.search.keyword.KeywordRelation;
import org.fao.geonet.kernel.search.keyword.KeywordSort;
import org.fao.geonet.kernel.search.keyword.SortDirection;
import org.jdom.Element;
/**
* Returns a list of keywords given a list of thesaurus
*/
public class GetNarrowerBroader implements Service {
public void init(String appPath, ServiceConfig params) throws Exception {
}
// --------------------------------------------------------------------------
// ---
// --- Service
// ---
// --------------------------------------------------------------------------
public Element exec(Element params, ServiceContext context)
throws Exception {
Element response = new Element(Jeeves.Elem.RESPONSE);
KeywordsSearcher searcher = null;
// perform the search and save search result into session
GeonetContext gc = (GeonetContext) context
.getHandlerContext(Geonet.CONTEXT_NAME);
ThesaurusManager thesaurusMan = gc.getBean(ThesaurusManager.class);
if(Log.isDebugEnabled("KeywordsManager")) Log.debug("KeywordsManager","Creating new keywords searcher");
searcher = new KeywordsSearcher(context, thesaurusMan);
String request = Util.getParam(params, "request");
String conceptId = Util.getParam(params, "id");
if (request.equals("broader")
|| request.equals("narrower")
|| request.equals("related")) {
KeywordRelation reqType;
if(request.equals("broader")) // If looking for broader search concept in a narrower element
reqType = KeywordRelation.NARROWER;
else if(request.equals("narrower"))
reqType = KeywordRelation.BROADER;
else
reqType = KeywordRelation.RELATED;
searcher.searchForRelated(params, reqType, context.getLanguage());
searcher.sortResults(KeywordSort.defaultLabelSorter(SortDirection.DESC));
// Build response
response.setAttribute("relation", request);
response.setAttribute("to", conceptId);
response.addContent(searcher.getXmlResults());
}else
throw new Exception("unknown request type: " + request);
return response;
}
}
// =============================================================================