//=============================================================================
//=== Copyright (C) 2001-2007 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
//===
//=== Contact: Jeroen Ticheler - FAO - Viale delle Terme di Caracalla 2,
//=== Rome - Italy. email: geonetwork@osgeo.org
//==============================================================================
package org.fao.geonet.services.main;
import jeeves.interfaces.Service;
import jeeves.server.ServiceConfig;
import jeeves.server.UserSession;
import jeeves.server.context.ServiceContext;
import org.fao.geonet.Util;
import org.fao.geonet.GeonetContext;
import org.fao.geonet.constants.Geonet;
import org.fao.geonet.kernel.SelectionManager;
import org.fao.geonet.kernel.search.LuceneIndexField;
import org.fao.geonet.kernel.search.MetaSearcher;
import org.fao.geonet.kernel.search.SearchManager;
import org.fao.geonet.services.util.SearchDefaults;
import org.jdom.Element;
//=============================================================================
public class XmlSearch implements Service
{
private ServiceConfig _config;
//--------------------------------------------------------------------------
//---
//--- Init
//---
//--------------------------------------------------------------------------
public void init(String appPath, ServiceConfig config) throws Exception
{
_config = config;
}
/**
* Run a search and return results as XML.
*
* @param params All search parameters defined in {@link LuceneIndexField}.
* <br/>
* To return only results summary, set summaryOnly parameter to 1.
* Default is 0 (ie.results and summary).
*
*/
public Element exec(Element params, ServiceContext context) throws Exception {
GeonetContext gc = (GeonetContext) context.getHandlerContext(Geonet.CONTEXT_NAME);
SearchManager searchMan = gc.getBean(SearchManager.class);
Element elData = SearchDefaults.getDefaultSearch(context, params);
String sRemote = elData.getChildText(Geonet.SearchResult.REMOTE);
boolean remote = sRemote != null && sRemote.equals(Geonet.Text.ON);
// possibly close old searcher
UserSession session = context.getUserSession();
// perform the search and save search result into session
MetaSearcher searcher;
context.info("Creating searchers");
if(remote) {
searcher = searchMan.newSearcher(SearchManager.Z3950, Geonet.File.SEARCH_Z3950_CLIENT);
} else {
searcher = searchMan.newSearcher(SearchManager.LUCENE, Geonet.File.SEARCH_LUCENE);
}
try {
// Check is user asked for summary only without building summary
String summaryOnly = Util.getParam(params, Geonet.SearchResult.SUMMARY_ONLY, "0");
String sBuildSummary = params.getChildText(Geonet.SearchResult.BUILD_SUMMARY);
if(sBuildSummary != null && sBuildSummary.equals("false") && ! "0".equals(summaryOnly)) {
elData.getChild(Geonet.SearchResult.BUILD_SUMMARY).setText("true");
}
session.setProperty(Geonet.Session.SEARCH_REQUEST, elData.clone());
searcher.search(context, elData, _config);
if (!"0".equals(summaryOnly)) {
return searcher.getSummary();
} else {
elData.addContent(new Element(Geonet.SearchResult.FAST).setText("true"));
elData.addContent(new Element("from").setText("1"));
// FIXME ? from and to parameter could be used but if not
// set, the service return the whole range of results
// which could be huge in non fast mode ?
elData.addContent(new Element("to").setText(searcher.getSize() +""));
Element result = searcher.present(context, elData, _config);
// Update result elements to present
SelectionManager.updateMDResult(context.getUserSession(), result);
return result;
}
} finally {
searcher.close();
}
}
}
//=============================================================================