org.hibernate.engine.transaction.internal.jdbc.JdbcIsolationDelegate Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2011, Red Hat Inc. 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.
*
* 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.engine.transaction.internal.jdbc;
import java.sql.Connection;
import java.sql.SQLException;
import org.jboss.logging.Logger;
import org.hibernate.HibernateException;
import org.hibernate.engine.jdbc.spi.JdbcConnectionAccess;
import org.hibernate.engine.jdbc.spi.SqlExceptionHelper;
import org.hibernate.engine.transaction.spi.IsolationDelegate;
import org.hibernate.engine.transaction.spi.TransactionCoordinator;
import org.hibernate.internal.CoreMessageLogger;
import org.hibernate.jdbc.WorkExecutor;
import org.hibernate.jdbc.WorkExecutorVisitable;
/**
* The isolation delegate for JDBC {@link Connection} based transactions
*
* @author Steve Ebersole
*/
public class JdbcIsolationDelegate implements IsolationDelegate {
private static final CoreMessageLogger LOG = Logger.getMessageLogger(CoreMessageLogger.class, JdbcIsolationDelegate.class.getName());
private final TransactionCoordinator transactionCoordinator;
public JdbcIsolationDelegate(TransactionCoordinator transactionCoordinator) {
this.transactionCoordinator = transactionCoordinator;
}
protected JdbcConnectionAccess jdbcConnectionAccess() {
return transactionCoordinator.getTransactionContext().getJdbcConnectionAccess();
}
protected SqlExceptionHelper sqlExceptionHelper() {
return transactionCoordinator.getJdbcCoordinator().getLogicalConnection().getJdbcServices().getSqlExceptionHelper();
}
@Override
public T delegateWork(WorkExecutorVisitable work, boolean transacted) throws HibernateException {
boolean wasAutoCommit = false;
try {
Connection connection = jdbcConnectionAccess().obtainConnection();
try {
if ( transacted ) {
if ( connection.getAutoCommit() ) {
wasAutoCommit = true;
connection.setAutoCommit( false );
}
}
T result = work.accept( new WorkExecutor(), connection );
if ( transacted ) {
connection.commit();
}
return result;
}
catch ( Exception e ) {
try {
if ( transacted && !connection.isClosed() ) {
connection.rollback();
}
}
catch ( Exception ignore ) {
LOG.unableToRollbackConnection( ignore );
}
if ( e instanceof HibernateException ) {
throw (HibernateException) e;
}
else if ( e instanceof SQLException ) {
throw sqlExceptionHelper().convert( (SQLException) e, "error performing isolated work" );
}
else {
throw new HibernateException( "error performing isolated work", e );
}
}
finally {
if ( transacted && wasAutoCommit ) {
try {
connection.setAutoCommit( true );
}
catch ( Exception ignore ) {
LOG.trace( "was unable to reset connection back to auto-commit" );
}
}
try {
jdbcConnectionAccess().releaseConnection( connection );
}
catch ( Exception ignore ) {
LOG.unableToReleaseIsolatedConnection( ignore );
}
}
}
catch ( SQLException sqle ) {
throw sqlExceptionHelper().convert( sqle, "unable to obtain isolated JDBC connection" );
}
}
}