//$Id: JTATransactionFactory.java 10339 2006-08-24 15:07:03Z [email protected] $
package org.hibernate.transaction;
import java.util.Properties;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.transaction.SystemException;
import javax.transaction.UserTransaction;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.ConnectionReleaseMode;
import org.hibernate.HibernateException;
import org.hibernate.Transaction;
import org.hibernate.TransactionException;
import org.hibernate.jdbc.JDBCContext;
import org.hibernate.cfg.Environment;
import org.hibernate.util.NamingHelper;
import org.hibernate.util.JTAHelper;
/**
* Factory for <tt>JTATransaction</tt>.
*
* @see JTATransaction
* @author Gavin King
*/
public class JTATransactionFactory implements TransactionFactory {
private static final Log log = LogFactory.getLog(JTATransactionFactory.class);
private static final String DEFAULT_USER_TRANSACTION_NAME = "java:comp/UserTransaction";
protected InitialContext context;
protected String utName;
public void configure(Properties props) throws HibernateException {
try {
context = NamingHelper.getInitialContext(props);
}
catch (NamingException ne) {
log.error("Could not obtain initial context", ne);
throw new HibernateException( "Could not obtain initial context", ne );
}
utName = props.getProperty(Environment.USER_TRANSACTION);
if (utName==null) {
TransactionManagerLookup lookup = TransactionManagerLookupFactory.getTransactionManagerLookup(props);
if (lookup!=null) utName = lookup.getUserTransactionName();
}
if (utName==null) utName = DEFAULT_USER_TRANSACTION_NAME;
}
public Transaction createTransaction(JDBCContext jdbcContext, Context transactionContext)
throws HibernateException {
return new JTATransaction(context, utName, jdbcContext, transactionContext);
}
public ConnectionReleaseMode getDefaultReleaseMode() {
return ConnectionReleaseMode.AFTER_STATEMENT;
}
public boolean isTransactionManagerRequired() {
return false;
}
public boolean areCallbacksLocalToHibernateTransactions() {
return false;
}
public boolean isTransactionInProgress(
JDBCContext jdbcContext,
Context transactionContext,
Transaction transaction) {
try {
// Essentially:
// 1) If we have a local (Hibernate) transaction in progress
// and it already has the UserTransaction cached, use that
// UserTransaction to determine the status.
// 2) If a transaction manager has been located, use
// that transaction manager to determine the status.
// 3) Finally, as the last resort, try to lookup the
// UserTransaction via JNDI and use that to determine the
// status.
if ( transaction != null ) {
UserTransaction ut = ( ( JTATransaction ) transaction ).getUserTransaction();
if ( ut != null ) {
return JTAHelper.isInProgress( ut.getStatus() );
}
}
if ( jdbcContext.getFactory().getTransactionManager() != null ) {
return JTAHelper.isInProgress( jdbcContext.getFactory().getTransactionManager().getStatus() );
}
else {
try {
UserTransaction ut = ( UserTransaction ) context.lookup( utName );
return ut != null && JTAHelper.isInProgress( ut.getStatus() );
}
catch ( NamingException ne ) {
throw new TransactionException( "Unable to locate UserTransaction to check status", ne );
}
}
}
catch( SystemException se ) {
throw new TransactionException( "Unable to check transaction status", se );
}
}
}
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