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.sql;
019
020import java.lang.reflect.Method;
021import java.sql.SQLException;
022import java.util.Set;
023
024import javax.sql.DataSource;
025
026import net.sf.hajdbc.invocation.InvocationStrategies;
027import net.sf.hajdbc.invocation.InvocationStrategy;
028import net.sf.hajdbc.util.reflect.Methods;
029
030/**
031 * @author Paul Ferraro
032 *
033 */
034public class DataSourceInvocationHandler extends CommonDataSourceInvocationHandler<DataSource, DataSourceDatabase, DataSourceProxyFactory>
035{
036        private static final Set<Method> getConnectionMethods = Methods.findMethods(DataSource.class, "getConnection");
037        
038        public DataSourceInvocationHandler(DataSourceProxyFactory factory)
039        {
040                super(DataSource.class, factory);
041        }
042
043        /**
044         * {@inheritDoc}
045         * @see net.sf.hajdbc.sql.CommonDataSourceInvocationHandler#getInvocationStrategy(javax.sql.CommonDataSource, java.lang.reflect.Method, java.lang.Object[])
046         */
047        @Override
048        protected InvocationStrategy getInvocationStrategy(DataSource dataSource, Method method, Object... parameters) throws SQLException
049        {
050                if (getConnectionMethods.contains(method))
051                {
052                        return InvocationStrategies.TRANSACTION_INVOKE_ON_ALL;
053                }
054                return super.getInvocationStrategy(dataSource, method, parameters);
055        }
056
057        @Override
058        protected ProxyFactoryFactory<DataSource, DataSourceDatabase, DataSource, SQLException, ?, ? extends Exception> getProxyFactoryFactory(DataSource object, Method method, Object... parameters) throws SQLException
059        {
060                if (getConnectionMethods.contains(method))
061                {
062                        TransactionContext<DataSource, DataSourceDatabase> context = new LocalTransactionContext<DataSource, DataSourceDatabase>(this.getProxyFactory().getDatabaseCluster());
063                        
064                        return new ConnectionProxyFactoryFactory<DataSource, DataSourceDatabase, DataSource>(context);
065                }
066                
067                return super.getProxyFactoryFactory(object, method, parameters);
068        }
069}