/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source 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, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.ejb.util;
import javax.ejb.EJBException;
import javax.ejb.EJBTransactionRequiredException;
import javax.ejb.EJBTransactionRolledbackException;
import javax.ejb.SessionSynchronization;
import javax.ejb.TransactionRolledbackLocalException;
import javax.transaction.HeuristicMixedException;
import javax.transaction.HeuristicRollbackException;
import javax.transaction.RollbackException;
import javax.transaction.Status;
import javax.transaction.Synchronization;
import javax.transaction.SystemException;
import javax.transaction.Transaction;
import javax.transaction.xa.XAResource;
import com.caucho.ejb.manager.EjbManager;
import com.caucho.transaction.TransactionImpl;
import com.caucho.transaction.TransactionManagerImpl;
import com.caucho.transaction.UserTransactionProxy;
import com.caucho.util.L10N;
/**
* Manages XA for bean methods.
*/
public class XAManager {
private static L10N L = new L10N(XAManager.class);
private UserTransactionProxy _ut;
private EjbManager _ejbManager;
public XAManager()
{
_ut = UserTransactionProxy.getInstance();
_ejbManager = EjbManager.getCurrent();
}
/**
* Enlists a resource
*/
public void enlist(XAResource xaResource)
{
try {
TransactionManagerImpl tm = TransactionManagerImpl.getLocal();
Transaction xa = tm.getTransaction();
if (xa != null && xaResource != null)
xa.enlistResource(xaResource);
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
throw new EJBException(e);
}
}
/**
* Enlists a resource
*/
public void registerSynchronization(SessionSynchronization sync)
{
try {
TransactionManagerImpl tm = TransactionManagerImpl.getLocal();
Transaction xa = tm.getTransaction();
if (xa != null && sync != null) {
xa.registerSynchronization(new SynchronizationAdapter(sync));
sync.afterBegin();
}
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
throw new EJBException(e);
}
}
/**
* Begins a mandatory transaction.
*/
public void beginMandatory()
{
try {
TransactionManagerImpl tm = TransactionManagerImpl.getLocal();
Transaction xa = tm.getTransaction();
if (xa == null)
throw new EJBTransactionRequiredException(L
.l("Transaction required for 'Mandatory' transaction attribute"));
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
throw new EJBException(e);
}
}
/**
* Begins a never transaction.
*/
public void beginNever()
{
try {
TransactionManagerImpl tm = TransactionManagerImpl.getLocal();
Transaction xa = tm.getTransaction();
if (xa != null)
throw new EJBException(L
.l("Transaction forbidden for 'Never' transaction attribute"));
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
throw new EJBException(e);
}
}
/**
* Begins a required transaction.
*
* @return the current transaction if it exists
*/
public Transaction beginRequired()
{
try {
TransactionManagerImpl tm = TransactionManagerImpl.getLocal();
Transaction xa = tm.getTransaction();
if (xa != null)
return xa;
_ut.begin();
return null;
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
throw new EJBException(e);
}
}
/**
* Begins a requires-new transaction.
*
* @return the current transaction if it exists
*/
public Transaction beginRequiresNew()
{
try {
TransactionManagerImpl tm = TransactionManagerImpl.getLocal();
Transaction xa = tm.suspend();
_ut.begin();
return xa;
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
throw new EJBException(e);
}
}
/**
* Begins a requires-new transaction.
*
* @return the current transaction if it exists
*/
public void endRequiresNew(Transaction parent)
{
try {
TransactionImpl xa = getTransaction();
if (xa != null && xa.isRollbackOnly())
_ut.rollback();
else
_ut.commit();
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
throw new EJBException(e);
} finally {
try {
if (parent != null) {
TransactionManagerImpl tm = TransactionManagerImpl.getLocal();
tm.resume(parent);
}
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
throw new EJBException(e);
}
}
}
/**
* Begins a not-supported transaction, i.e. suspend any current transaction.
*
* @return the current transaction if it exists
*/
public Transaction beginNotSupported()
{
try {
TransactionManagerImpl tm = TransactionManagerImpl.getLocal();
return tm.suspend();
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
throw new EJBException(e);
}
}
/**
* Begins a not-supported transaction, i.e. suspend any current transaction.
*
* @return the current transaction if it exists
*/
public void beginSupports()
{
try {
TransactionManagerImpl tm = TransactionManagerImpl.getLocal();
TransactionImpl xa = tm.getTransaction();
if (xa != null)
xa.setAttribute("allowRollback", Boolean.FALSE);
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
throw new EJBException(e);
}
}
/**
* Gets the active transaction.
*
* @return The current transaction if it exists.
*/
public TransactionImpl getTransaction()
{
try {
TransactionManagerImpl tm = TransactionManagerImpl.getLocal();
return tm.getTransaction();
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
throw new EJBException(e);
}
}
public boolean systemException(Throwable e)
{
TransactionImpl xa = getTransaction();
AppExceptionItem appExn = null;
if (_ejbManager != null)
appExn = _ejbManager.getSystemException(e.getClass());
if (appExn == null || appExn.isRollback()) {
if (xa != null)
xa.setRollbackOnly(e);
return appExn == null || appExn.isSystemException();
}
else
return false;
}
public void applicationException(Throwable e)
{
TransactionImpl xa = getTransaction();
if (xa == null)
return;
AppExceptionItem appExn = null;
if (_ejbManager != null)
appExn = _ejbManager.getApplicationException(e.getClass());
if (appExn != null && appExn.isRollback()) {
xa.setRollbackOnly(e);
}
}
/**
* Mark the transaction for rollback
*/
public void markRollback(Exception e)
{
_ut.setRollbackOnly(e);
}
/**
* Mark the transaction for rollback
*/
public void markRollback()
{
try {
if (_ut.getStatus() == Status.STATUS_ACTIVE)
_ut.setRollbackOnly();
} catch (SystemException e) {
throw new IllegalStateException(e);
}
}
public void rethrowEjbException(Exception e, boolean isClientXa)
{
if (isClientXa) {
RuntimeException exn;
exn = new EJBTransactionRolledbackException(e.getMessage(), e);
throw exn;
}
else if (e instanceof EJBException)
throw (RuntimeException) e;
else
throw new EJBException(e);
}
public void rethrowEjbException(Error e, boolean isClientXa)
{
if (isClientXa) {
RuntimeException exn;
exn = new EJBTransactionRolledbackException(e.getMessage());
exn.initCause(e);
throw exn;
}
else {
RuntimeException exn = new EJBException();
exn.initCause(e);
throw exn;
}
}
/**
* Commits transaction.
*/
public void commit()
{
try {
TransactionImpl xa = getTransaction();
if (xa != null && xa.isRollbackOnly())
_ut.rollback();
else
_ut.commit();
} catch (RuntimeException e) {
throw e;
} catch (RollbackException e) {
throw new TransactionRolledbackLocalException(e.getMessage(), e);
} catch (HeuristicMixedException e) {
throw new TransactionRolledbackLocalException(e.getMessage(), e);
} catch (HeuristicRollbackException e) {
throw new TransactionRolledbackLocalException(e.getMessage(), e);
} catch (Exception e) {
throw new EJBException(e);
}
}
/**
* Commits transaction.
*/
public void rollback()
{
try {
TransactionImpl xa = getTransaction();
if (xa != null)
_ut.rollback();
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
throw new EJBException(e);
}
}
/**
* Commits transaction.
public void commit(boolean isCommit)
{
try {
if (isCommit)
_ut.commit();
else
_ut.rollback();
} catch (RuntimeException e) {
throw e;
} catch (RollbackException e) {
throw new TransactionRolledbackLocalException(e.getMessage(), e);
} catch (HeuristicMixedException e) {
throw new TransactionRolledbackLocalException(e.getMessage(), e);
} catch (HeuristicRollbackException e) {
throw new TransactionRolledbackLocalException(e.getMessage(), e);
} catch (Exception e) {
throw new EJBException(e);
}
}*/
/**
* Resumes transaction.
*/
public void resume(Transaction xa)
{
try {
TransactionManagerImpl tm = TransactionManagerImpl.getLocal();
tm.resume(xa);
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
throw new EJBException(e);
}
}
public static class SynchronizationAdapter implements Synchronization {
private final SessionSynchronization _sync;
SynchronizationAdapter(SessionSynchronization sync)
{
_sync = sync;
}
public void beforeCompletion()
{
try {
_sync.beforeCompletion();
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
throw new EJBException(e);
}
}
public void afterCompletion(int status)
{
try {
_sync.afterCompletion(status == Status.STATUS_COMMITTED);
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
throw new EJBException(e);
}
}
public String toString()
{
return getClass().getSimpleName() + "[" + _sync + "]";
}
}
public String toString()
{
return "XAManager[]";
}
}