    001    //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.4_testing/src/org/deegree/portal/standard/csw/control/DeleteFromShoppingCartListener.java $
    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
    037    package org.deegree.portal.standard.csw.control;
    038
    039    import javax.servlet.http.HttpServletRequest;
    040    import javax.servlet.http.HttpSession;
    041
    042    import org.deegree.enterprise.control.FormEvent;
    043    import org.deegree.enterprise.control.RPCParameter;
    044    import org.deegree.enterprise.control.RPCStruct;
    045    import org.deegree.enterprise.control.RPCWebEvent;
    046    import org.deegree.framework.log.ILogger;
    047    import org.deegree.framework.log.LoggerFactory;
    048    import org.deegree.i18n.Messages;
    049    import org.deegree.portal.standard.csw.CatalogClientException;
    050    import org.deegree.portal.standard.csw.model.SessionRecord;
    051    import org.deegree.portal.standard.csw.model.ShoppingCart;
    052
    053    /**
    054     * A <code>${type_name}</code> class.<br/>
    055     *
    056     * The Listener deletes an entry from the selection/shopping cart of a user.
    057     * The required information is contained in the RPCWebEvent passed to the actionPerformed method.
    058     *
    059     * @author <a href="mailto:mays@lat-lon.de">Judit Mays</a>
    060     * @author last edited by: $Author: mschneider $
    061     *
    062     * @version $Revision: 18195 $ $Date: 2009-06-18 17:55:39 +0200 (Do, 18. Jun 2009) $
    063     *
    064     * @deprecated Shopping cart will not be supported at the moment. update: new changes in deegree1_fork will not be
    065     *             carried here, since this class is still not used. Remove when this status changes
    066     */
    067    @Deprecated
    068    public class DeleteFromShoppingCartListener extends AddToShoppingCartListener {
    069        //  extends AddToShoppingCartListener --> SimpleSearchListener --> AbstractListener.
    070
    071        private static final ILogger LOG = LoggerFactory.getLogger( DeleteFromShoppingCartListener.class );
    072
    073        /* (non-Javadoc)
    074         * @see org.deegree.enterprise.control.WebListener#actionPerformed(org.deegree.enterprise.control.FormEvent)
    075         */
    076        @Override
    077        public void actionPerformed( FormEvent event ) {
    078
    079            RPCWebEvent rpcEvent = (RPCWebEvent) event;
    080            try {
    081                validateRequest( rpcEvent );
    082            } catch ( Exception e ) {
    083                gotoErrorPage( Messages.getMessage( "IGEO_STD_CSW_INVALID_RPC_EVENT", e.getMessage() ) );
    084                LOG.logError( e.getMessage(), e );
    085                return;
    086            }
    087
    088            HttpSession session = ( (HttpServletRequest) this.getRequest() ).getSession( true );
    089            ShoppingCart cart = (ShoppingCart) session.getAttribute( Constants.SESSION_SHOPPINGCART );
    090            if ( cart != null ) {
    091
    092                RPCParameter[] params = rpcEvent.getRPCMethodCall().getParameters();
    093
    094                for ( int i = 0; i < params.length; i++ ) {
    095                    RPCStruct struct = (RPCStruct) params[i].getValue();
    096
    097                    String identifier = (String) struct.getMember( Constants.RPC_IDENTIFIER ).getValue();
    098                    String catalog = (String) struct.getMember( RPC_CATALOG ).getValue();
    099                    String title = (String) struct.getMember( RPC_TITLE ).getValue();
    100
    101                    cart.remove( new SessionRecord( identifier, catalog, title ) );
    102                }
    103
    104                // write the shopping cart back to the users session and to the request
    105                session.setAttribute( Constants.SESSION_SHOPPINGCART, cart );
    106                getRequest().setAttribute( Constants.SESSION_SHOPPINGCART, cart );
    107            }
    108
    109            return;
    110        }
    111
    112        /* (non-Javadoc)
    113         * @see org.deegree.portal.standard.csw.control.SimpleSearchListener#validateRequest(org.deegree.enterprise.control.RPCWebEvent)
    114         */
    115        @Override
    116        protected void validateRequest( RPCWebEvent rpcEvent )
    117                                throws CatalogClientException {
    118
    119            RPCParameter[] params = extractRPCParameters( rpcEvent );
    120
    121            // there are a varying number of params in this rpcEvent. Check them all !
    122            for ( int i = 0; i < params.length; i++ ) {
    123
    124                RPCStruct struct = extractRPCStruct( rpcEvent, i );
    125                Object member = extractRPCMember( struct, Constants.RPC_IDENTIFIER );
    126                if ( member == null ) {
    127                    throw new CatalogClientException( Messages.getMessage( "IGEO_STD_CSW_MISSING_PARAM", Constants.RPC_IDENTIFIER ) );
    128                }
    129                member = extractRPCMember( struct, RPC_CATALOG );
    130                if ( member == null ) {
    131                    throw new CatalogClientException( Messages.getMessage( "IGEO_STD_CSW_MISSING_PARAM", RPC_CATALOG ) );
    132                }
    133                member = extractRPCMember( struct, RPC_TITLE );
    134                if ( member == null ) {
    135                    throw new CatalogClientException( Messages.getMessage( "IGEO_STD_CSW_MISSING_PARAM", RPC_TITLE ) );
    136                }
    137            }
    138
    139            return;
    140        }
    141
    142    }