/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2007, Red Hat, Inc. and/or it's affiliates or third-party contributors as
 * indicated by the @author tags or express copyright attribution
 * statements applied by the authors.  All third-party contributions are
 * distributed under license by Red Hat, Inc. and/or it's affiliates.
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution; if not, write to:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
 * Boston, MA  02110-1301  USA
 */
package org.hibernate.test.cache.infinispan.functional.cluster;

import java.sql.Connection;
import java.sql.SQLException;
import java.util.Properties;

import org.hibernate.HibernateException;
import org.hibernate.connection.ConnectionProvider;
import org.hibernate.connection.ConnectionProviderFactory;

/**
 * A {@link ConnectionProvider} implementation adding JTA-style transactionality around the returned
 * connections using the {@link DualNodeJtaTransactionManagerImpl}.
 * 
 * @author Brian Stansberry
 */
public class DualNodeConnectionProviderImpl implements ConnectionProvider {
   private static ConnectionProvider actualConnectionProvider = ConnectionProviderFactory.newConnectionProvider();
   private String nodeId;
   private boolean isTransactional;

   public static ConnectionProvider getActualConnectionProvider() {
      return actualConnectionProvider;
   }

   public void configure(Properties props) throws HibernateException {
      nodeId = props.getProperty(DualNodeTestCase.NODE_ID_PROP);
      if (nodeId == null)
         throw new HibernateException(DualNodeTestCase.NODE_ID_PROP + " not configured");
   }

   public Connection getConnection() throws SQLException {
      DualNodeJtaTransactionImpl currentTransaction = DualNodeJtaTransactionManagerImpl
               .getInstance(nodeId).getCurrentTransaction();
      if (currentTransaction == null) {
         isTransactional = false;
         return actualConnectionProvider.getConnection();
      } else {
         isTransactional = true;
         Connection connection = currentTransaction.getEnlistedConnection();
         if (connection == null) {
            connection = actualConnectionProvider.getConnection();
            currentTransaction.enlistConnection(connection);
         }
         return connection;
      }
   }

   public void closeConnection(Connection conn) throws SQLException {
      if (!isTransactional) {
         conn.close();
      }
   }

   public void close() throws HibernateException {
      actualConnectionProvider.close();
   }

   public boolean supportsAggressiveRelease() {
      return true;
   }
}
