001/*
002 * HA-JDBC: High-Availability JDBC
003 * Copyright (C) 2013  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.sql;
019
020import java.util.SortedMap;
021
022import net.sf.hajdbc.Database;
023import net.sf.hajdbc.util.Objects;
024
025/**
026 * @author Paul Ferraro
027 */
028public class SimpleInvocationResultFactory<Z, D extends Database<Z>, R> implements InvocationResultFactory<Z, D, R>
029{
030        @Override
031        public boolean differs(R primaryResult, R backupResult)
032        {
033                return !Objects.equals(primaryResult, backupResult);
034        }
035        
036        @Override
037        public R createResult(SortedMap<D, R> results)
038        {
039                return results.values().iterator().next();
040        }
041}