00001 /** 00002 * C-JDBC: Clustered JDBC. 00003 * Copyright (C) 2002-2004 French National Institute For Research In Computer 00004 * Science And Control (INRIA). 00005 * Contact: c-jdbc@objectweb.org 00006 * 00007 * This library is free software; you can redistribute it and/or modify it 00008 * under the terms of the GNU Lesser General Public License as published by the 00009 * Free Software Foundation; either version 2.1 of the License, or any later 00010 * version. 00011 * 00012 * This library is distributed in the hope that it will be useful, but WITHOUT 00013 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 00014 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License 00015 * for more details. 00016 * 00017 * You should have received a copy of the GNU Lesser General Public License 00018 * along with this library; if not, write to the Free Software Foundation, 00019 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. 00020 * 00021 * Initial developer(s): Emmanuel Cecchet. 00022 * Contributor(s): ______________________. 00023 */ 00024 00025 package org.objectweb.cjdbc.controller.virtualdatabase.protocol; 00026 00027 import java.sql.SQLException; 00028 00029 import org.objectweb.cjdbc.common.sql.AbstractWriteRequest; 00030 import org.objectweb.cjdbc.controller.requestmanager.distributed.DistributedRequestManager; 00031 00032 /** 00033 * This class defines a CacheInvalidate 00034 * 00035 * @author <a href="mailto:Emmanuel.Cecchet@inria.fr">Emmanuel Cecchet </a> 00036 * @version 1.0 00037 */ 00038 public class CacheInvalidate extends DistributedRequest 00039 { 00040 00041 /** 00042 * Creates a new <code>CacheInvalidate</code> object 00043 * 00044 * @param request Write request that invalidates the cache 00045 */ 00046 public CacheInvalidate(AbstractWriteRequest request) 00047 { 00048 super(request); 00049 } 00050 00051 /** 00052 * @see org.objectweb.cjdbc.controller.virtualdatabase.protocol.DistributedRequest#scheduleRequest(org.objectweb.cjdbc.controller.requestmanager.distributed.DistributedRequestManager) 00053 */ 00054 public final void scheduleRequest(DistributedRequestManager drm) 00055 throws SQLException 00056 { 00057 } 00058 00059 /** 00060 * @see org.objectweb.cjdbc.controller.virtualdatabase.protocol.DistributedRequest#executeScheduledRequest(org.objectweb.cjdbc.controller.requestmanager.distributed.DistributedRequestManager) 00061 */ 00062 public final Object executeScheduledRequest(DistributedRequestManager drm) 00063 throws SQLException 00064 { 00065 // Notify cache if any 00066 if (drm.getResultCache() != null) 00067 { // Update cache 00068 drm.getResultCache().writeNotify((AbstractWriteRequest) request); 00069 } 00070 return null; 00071 } 00072 00073 }