001/*
002 * HA-JDBC: High-Availability JDBC
003 * Copyright (C) 2012  Paul Ferraro
004 *
005 * This program is free software: you can redistribute it and/or modify
006 * it under the terms of the GNU Lesser General Public License as published by
007 * the Free Software Foundation, either version 3 of the License, or
008 * (at your option) any later version.
009 *
010 * This program is distributed in the hope that it will be useful,
011 * but WITHOUT ANY WARRANTY; without even the implied warranty of
012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
013 * GNU Lesser General Public License for more details.
014 *
015 * You should have received a copy of the GNU Lesser General Public License
016 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
017 */
018package net.sf.hajdbc.durability.none;
019
020import java.util.Map;
021
022import net.sf.hajdbc.Database;
023import net.sf.hajdbc.ExceptionFactory;
024import net.sf.hajdbc.durability.Durability;
025import net.sf.hajdbc.durability.InvocationEvent;
026import net.sf.hajdbc.durability.InvokerEvent;
027import net.sf.hajdbc.invocation.InvocationStrategy;
028import net.sf.hajdbc.invocation.Invoker;
029import net.sf.hajdbc.logging.Level;
030import net.sf.hajdbc.logging.Logger;
031import net.sf.hajdbc.logging.LoggerFactory;
032
033/**
034 * {@link Durability} implementation that does not track anything.
035 * This durability level cannot detect, nor recover from mid-commit crashes.
036 * @author Paul Ferraro
037 */
038public class NoDurability<Z, D extends Database<Z>> implements Durability<Z, D>
039{
040        private Logger logger = LoggerFactory.getLogger(this.getClass());
041        
042        /**
043         * {@inheritDoc}
044         * @see net.sf.hajdbc.durability.Durability#getInvocationStrategy(net.sf.hajdbc.invocation.InvocationStrategy, net.sf.hajdbc.durability.Durability.Phase, java.lang.Object)
045         */
046        @Override
047        public InvocationStrategy getInvocationStrategy(InvocationStrategy strategy, Phase phase, Object transactionId)
048        {
049                return strategy;
050        }
051
052        /**
053         * {@inheritDoc}
054         * @see net.sf.hajdbc.durability.Durability#getInvoker(net.sf.hajdbc.invocation.Invoker, net.sf.hajdbc.durability.Durability.Phase, java.lang.Object, net.sf.hajdbc.ExceptionFactory)
055         */
056        @Override
057        public <T, R, E extends Exception> Invoker<Z, D, T, R, E> getInvoker(Invoker<Z, D, T, R, E> invoker, Phase phase, Object transactionId, ExceptionFactory<E> exceptionFactory)
058        {
059                return invoker;
060        }
061
062        /**
063         * {@inheritDoc}
064         * @see net.sf.hajdbc.durability.Durability#recover(java.util.Map)
065         */
066        @Override
067        public void recover(Map<InvocationEvent, Map<String, InvokerEvent>> invokers)
068        {
069                this.logger.log(Level.WARN, invokers.toString());
070        }
071}