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.invocation.Invoker;
024
025/**
026 * 
027 * @author Paul Ferraro
028 */
029public class ProxyInvocationResultFactory<Z, D extends Database<Z>, P, R, E extends Exception> implements InvocationResultFactory<Z, D, R>
030{
031        private final ProxyFactoryFactory<Z, D, P, E, R, ? extends Exception> factory;
032        private final P parentProxy;
033        private final ProxyFactory<Z, D, P, E> parent;
034        private final Invoker<Z, D, P, R, E> invoker;
035
036        public ProxyInvocationResultFactory(ProxyFactoryFactory<Z, D, P, E, R, ? extends Exception> factory, P parentProxy, ProxyFactory<Z, D, P, E> parent, Invoker<Z, D, P, R, E> invoker)
037        {
038                this.factory = factory;
039                this.parentProxy = parentProxy;
040                this.parent = parent;
041                this.invoker = invoker;
042        }
043        
044        @Override
045        public boolean differs(R primaryResult, R backupResult)
046        {
047                return ((primaryResult != null) && (backupResult == null)) || ((primaryResult == null) && (backupResult != null));
048        }
049
050        @Override
051        public R createResult(SortedMap<D, R> results)
052        {
053                return this.factory.createProxyFactory(this.parentProxy, this.parent, this.invoker, results).createProxy();
054        }
055}