//$Header: /home/deegree/jail/deegreerepository/deegree/src/org/deegree/portal/standard/csw/control/DeleteFromShoppingCartListener.java,v 1.10 2006/07/31 11:02:44 mays Exp $
/*---------------- FILE HEADER ------------------------------------------
This file is part of deegree.
Copyright (C) 2001-2006 by:
Department of Geography, University of Bonn
http://www.giub.uni-bonn.de/deegree/
lat/lon GmbH
http://www.lat-lon.de
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Contact:
Andreas Poth
lat/lon GmbH
Aennchenstraße 19
53177 Bonn
Germany
E-Mail: poth@lat-lon.de
Prof. Dr. Klaus Greve
Department of Geography
University of Bonn
Meckenheimer Allee 166
53115 Bonn
Germany
E-Mail: greve@giub.uni-bonn.de
---------------------------------------------------------------------------*/
package org.deegree.portal.standard.csw.control;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import org.deegree.enterprise.control.FormEvent;
import org.deegree.enterprise.control.RPCParameter;
import org.deegree.enterprise.control.RPCStruct;
import org.deegree.enterprise.control.RPCWebEvent;
import org.deegree.framework.log.ILogger;
import org.deegree.framework.log.LoggerFactory;
import org.deegree.portal.standard.csw.CatalogClientException;
import org.deegree.portal.standard.csw.model.SessionRecord;
import org.deegree.portal.standard.csw.model.ShoppingCart;
/**
* A <code>${type_name}</code> class.<br/>
*
* The Listener deletes an entry from the selection/shopping cart of a user.
* The required information is contained in the RPCWebEvent passed to the actionPerformed method.
*
* @author <a href="mailto:mays@lat-lon.de">Judit Mays</a>
* @author last edited by: $Author: mays $
*
* @version 2.0 $Revision: 1.10 $ $Date: 2006/07/31 11:02:44 $
*
* @since 2.0
*/
public class DeleteFromShoppingCartListener extends AddToShoppingCartListener {
// extends AddToShoppingCartListener --> SimpleSearchListener --> AbstractListener.
private static final ILogger LOG = LoggerFactory.getLogger( DeleteFromShoppingCartListener.class );
public void actionPerformed( FormEvent event ) {
LOG.entering();
RPCWebEvent rpcEvent = (RPCWebEvent)event;
try {
validateRequest( rpcEvent );
} catch ( Exception e ) {
e.printStackTrace();
gotoErrorPage( "Invalid rpc request: \n" + e.getMessage() );
LOG.exiting();
return;
}
HttpSession session = ( (HttpServletRequest)this.getRequest() ).getSession( true );
ShoppingCart cart = (ShoppingCart)session.getAttribute( Constants.SESSION_SHOPPINGCART );
if ( cart != null ) {
RPCParameter[] params = rpcEvent.getRPCMethodCall().getParameters();
for (int i = 0; i < params.length; i++) {
RPCStruct struct = (RPCStruct)params[i].getValue();
String identifier = (String)struct.getMember( Constants.RPC_IDENTIFIER ).getValue();
String catalog = (String)struct.getMember( RPC_CATALOG ).getValue();
String title = (String)struct.getMember( RPC_TITLE ).getValue();
cart.remove( new SessionRecord( identifier, catalog, title ) );
}
// write the shopping cart back to the users session and to the request
session.setAttribute( Constants.SESSION_SHOPPINGCART, cart );
getRequest().setAttribute( Constants.SESSION_SHOPPINGCART, cart );
}
LOG.exiting();
return;
}
protected void validateRequest( RPCWebEvent rpcEvent ) throws CatalogClientException {
LOG.entering();
RPCParameter[] params = extractRPCParameters( rpcEvent );
// there are a varying number of params in this rpcEvent. Check them all !
for( int i = 0; i < params.length; i++ ) {
RPCStruct struct = extractRPCStruct( rpcEvent, i );
Object member = extractRPCMember( struct, Constants.RPC_IDENTIFIER );
if ( member == null ) {
throw new CatalogClientException( "Identifier must be set in the rpcEvent." );
}
member = extractRPCMember( struct, RPC_CATALOG );
if ( member == null ) {
throw new CatalogClientException( "Catalog must be set in the rpcEvent." );
}
member = extractRPCMember( struct, RPC_TITLE );
if ( member == null ) {
throw new CatalogClientException( "Title must be set in the rpcEvent." );
}
}
LOG.exiting();
return;
}
}
/* ********************************************************************
Changes to this class. What the people have been up to:
$Log: DeleteFromShoppingCartListener.java,v $
Revision 1.10 2006/07/31 11:02:44 mays
move constants from class Constants to the classes where they are needed
Revision 1.9 2006/07/31 09:33:58 mays
move Constants to package control, update imports
Revision 1.8 2006/06/23 13:38:25 mays
add/update csw control files
********************************************************************** */