/*
* JBoss, Home of Professional Open Source
* Copyright 2006, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags.
* See the copyright.txt in the distribution for a
* full listing of individual contributors.
* 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, v. 2.1.
* This program is distributed in the hope that it will be useful, but WITHOUT A
* 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,
* v.2.1 along with this distribution; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*
* (C) 2005-2006,
* @author JBoss Inc.
*/
/*
* Copyright (C) 2005,
*
* Arjuna Technologies Ltd,
* Newcastle upon Tyne,
* Tyne and Wear,
* UK.
*
* $Id: TxImporter.java 2342 2006-03-30 13:06:17Z $
*/
package com.arjuna.ats.internal.jta.transaction.arjunacore.jca;
import java.util.HashMap;
import javax.transaction.xa.*;
import com.arjuna.ats.arjuna.common.Uid;
import com.arjuna.ats.internal.jta.transaction.arjunacore.subordinate.jca.TransactionImple;
import com.arjuna.ats.jta.xa.XidImple;
public class TxImporter
{
/**
* Create a subordinate transaction associated with the global transaction
* inflow. No timeout is associated with the transaction.
*
* @param xid
* the global transaction.
*
* @return the subordinate transaction.
*
* @throws XAException
* thrown if there are any errors.
*/
public static TransactionImple importTransaction(Xid xid)
throws XAException
{
return importTransaction(xid, 0);
}
/**
* Create a subordinate transaction associated with the global transaction
* inflow and having a specified timeout.
*
* @param xid
* the global transaction.
* @param timeout
* the timeout associated with the global transaction.
*
* @return the subordinate transaction.
*
* @throws XAException
* thrown if there are any errors.
*/
public static TransactionImple importTransaction(Xid xid, int timeout)
throws XAException
{
if (xid == null)
throw new IllegalArgumentException();
/*
* Check to see if we haven't already imported this thing.
*/
TransactionImple imported = getImportedTransaction(xid);
if (imported == null)
{
imported = new TransactionImple(timeout, xid);
_transactions.put(new XidImple(xid), imported);
}
return imported;
}
/**
* Used to recover an imported transaction.
*
* @param actId
* the state to recover.
* @return the recovered transaction object.
* @throws XAException
*/
public static TransactionImple recoverTransaction(Uid actId)
throws XAException
{
if (actId == null)
throw new IllegalArgumentException();
TransactionImple recovered = new TransactionImple(actId);
/*
* Is the transaction already in the list? This may be the case because
* we scan the object store periodically and may get Uids to recover for
* transactions that are progressing normally, i.e., do not need
* recovery. In which case, we need to ignore them.
*/
TransactionImple tx = (TransactionImple) _transactions.get(recovered
.baseXid());
if (tx == null)
{
_transactions.put(recovered.baseXid(), recovered);
recovered.recordTransaction();
return recovered;
}
else
{
return tx;
}
}
/**
* Get the subordinate (imported) transaction associated with the global
* transaction.
*
* @param xid
* the global transaction.
*
* @return the subordinate transaction or <code>null</code> if there is
* none.
*
* @throws XAException
* thrown if there are any errors.
*/
public static TransactionImple getImportedTransaction(Xid xid)
throws XAException
{
if (xid == null)
throw new IllegalArgumentException();
TransactionImple tx = (TransactionImple) _transactions
.get(new XidImple(xid));
if (tx == null)
return null;
if (!tx.activated())
{
tx.recover();
return tx;
}
else
return tx;
}
/**
* Remove the subordinate (imported) transaction.
*
* @param xid
* the global transactin.
*
* @throws XAException
* thrown if there are any errors.
*/
public static void removeImportedTransaction(Xid xid) throws XAException
{
if (xid == null)
throw new IllegalArgumentException();
_transactions.remove(new XidImple(xid));
}
private static HashMap _transactions = new HashMap();
}