001    /**
002     *
003     * Copyright 2003-2004 The Apache Software Foundation
004     *
005     *  Licensed under the Apache License, Version 2.0 (the "License");
006     *  you may not use this file except in compliance with the License.
007     *  You may obtain a copy of the License at
008     *
009     *     http://www.apache.org/licenses/LICENSE-2.0
010     *
011     *  Unless required by applicable law or agreed to in writing, software
012     *  distributed under the License is distributed on an "AS IS" BASIS,
013     *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     *  See the License for the specific language governing permissions and
015     *  limitations under the License.
016     */
017    
018    package org.apache.geronimo.transaction.log;
019    
020    import java.util.ArrayList;
021    import java.util.Collection;
022    import java.util.List;
023    
024    import javax.transaction.xa.Xid;
025    
026    import org.apache.geronimo.transaction.manager.LogException;
027    import org.apache.geronimo.transaction.manager.TransactionLog;
028    import org.apache.geronimo.transaction.manager.XidFactory;
029    
030    /**
031     * A log sink that doesn't actually do anything.
032     * Not recommended for production use as heuristic recovery will be needed if
033     * the transaction coordinator dies.
034     *
035     * @version $Rev: 355877 $ $Date: 2005-12-10 18:48:27 -0800 (Sat, 10 Dec 2005) $
036     */
037    public class UnrecoverableLog implements TransactionLog {
038        public void begin(Xid xid) throws LogException {
039        }
040    
041        public Object prepare(Xid xid, List branches) throws LogException {
042            return null;
043        }
044    
045        public void commit(Xid xid, Object logMark) throws LogException {
046        }
047    
048        public void rollback(Xid xid, Object logMark) throws LogException {
049        }
050    
051        public Collection recover(XidFactory xidFactory) throws LogException {
052            return new ArrayList();
053        }
054    
055        public String getXMLStats() {
056            return null;
057        }
058    
059        public int getAverageForceTime() {
060            return 0;
061        }
062    
063        public int getAverageBytesPerForce() {
064            return 0;
065        }
066    }