/**
* SpagoBI - The Business Intelligence Free Platform
*
* Copyright (C) 2004 - 2008 Engineering Ingegneria Informatica S.p.A.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
**/
package it.eng.spagobi.engines.qbe.services.core.catalogue;
import it.eng.qbe.query.Query;
import it.eng.qbe.query.catalogue.QueryCatalogue;
import it.eng.qbe.query.serializer.SerializerFactory;
import it.eng.spago.base.SourceBean;
import it.eng.spagobi.engines.qbe.QbeEngineInstance;
import it.eng.spagobi.engines.qbe.services.core.AbstractQbeEngineAction;
import it.eng.spagobi.utilities.engines.SpagoBIEngineServiceException;
import it.eng.spagobi.utilities.engines.SpagoBIEngineServiceExceptionHandler;
import it.eng.spagobi.utilities.service.JSONSuccess;
import java.io.IOException;
import org.apache.log4j.Logger;
import org.json.JSONObject;
/**
* This action is responsible to retrieve the first query contained into the catalog.
* It is used for Read-only users (a Read-only user is able only to execute the first query of the catalog)
*
* @author Davide Zerbetto (davide.zerbetto@eng.it)
*
* @deprecated use GetQueryAction?SEARCH_TYPE=byType&SEARCH_FILTER=first
*/
public class GetFirstQueryAction extends AbstractQbeEngineAction {
public static final String SERVICE_NAME = "GET_FIRST_QUERY_ACTION";
public String getActionName(){return SERVICE_NAME;}
/** Logger component. */
public static transient Logger logger = Logger.getLogger(GetFirstQueryAction.class);
public void service(SourceBean request, SourceBean response) {
logger.debug("IN");
try {
super.service(request, response);
// retrieve first query from catalog
QbeEngineInstance engineInstance = getEngineInstance();
QueryCatalogue queryCatalogue = engineInstance.getQueryCatalogue();
Query query = queryCatalogue.getFirstQuery();
// serialize query
JSONObject queryJSON = (JSONObject)SerializerFactory.getSerializer("application/json").serialize(query, getEngineInstance().getDataSource(), getLocale());
try {
writeBackToClient( new JSONSuccess(queryJSON) );
} catch (IOException e) {
String message = "Impossible to write back the responce to the client";
throw new SpagoBIEngineServiceException(getActionName(), message, e);
}
} catch(Throwable t) {
throw SpagoBIEngineServiceExceptionHandler.getInstance().getWrappedException(getActionName(), getEngineInstance(), t);
} finally {
logger.debug("OUT");
}
}
}