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}