Hibernate example source code file (DualNodeJtaTransactionManagerImpl.java)

This example Hibernate source code file (DualNodeJtaTransactionManagerImpl.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Hibernate tags/keywords

dualnodejtatransactionimpl, dualnodejtatransactionmanagerimpl, dualnodejtatransactionmanagerimpl, hashtable, illegalstateexception, illegalstateexception, instances, securityexception, systemexception, systemexception, threadlocal, transaction, transaction, transactionmanager, util

The Hibernate DualNodeJtaTransactionManagerImpl.java source code

/*
 * 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.util.Hashtable;
import javax.transaction.HeuristicMixedException;
import javax.transaction.HeuristicRollbackException;
import javax.transaction.InvalidTransactionException;
import javax.transaction.NotSupportedException;
import javax.transaction.RollbackException;
import javax.transaction.Status;
import javax.transaction.SystemException;
import javax.transaction.Transaction;
import javax.transaction.TransactionManager;
import org.infinispan.util.logging.Log;
import org.infinispan.util.logging.LogFactory;

/**
 * Variant of SimpleJtaTransactionManagerImpl that doesn't use a VM-singleton, but rather a set of
 * impls keyed by a node id.
 *
 * TODO: Merge with single node transaction manager as much as possible
 *
 * @author Brian Stansberry
 */
public class DualNodeJtaTransactionManagerImpl implements TransactionManager {

   private static final Log log = LogFactory.getLog(DualNodeJtaTransactionManagerImpl.class);

   private static final Hashtable INSTANCES = new Hashtable();

   private ThreadLocal currentTransaction = new ThreadLocal();
   private String nodeId;

   public synchronized static DualNodeJtaTransactionManagerImpl getInstance(String nodeId) {
      DualNodeJtaTransactionManagerImpl tm = (DualNodeJtaTransactionManagerImpl) INSTANCES
               .get(nodeId);
      if (tm == null) {
         tm = new DualNodeJtaTransactionManagerImpl(nodeId);
         INSTANCES.put(nodeId, tm);
      }
      return tm;
   }

   public synchronized static void cleanupTransactions() {
      for (java.util.Iterator it = INSTANCES.values().iterator(); it.hasNext();) {
         TransactionManager tm = (TransactionManager) it.next();
         try {
            tm.suspend();
         } catch (Exception e) {
            log.error("Exception cleaning up TransactionManager " + tm);
         }
      }
   }

   public synchronized static void cleanupTransactionManagers() {
      INSTANCES.clear();
   }

   private DualNodeJtaTransactionManagerImpl(String nodeId) {
      this.nodeId = nodeId;
   }

   public int getStatus() throws SystemException {
      Transaction tx = getCurrentTransaction();
      return tx == null ? Status.STATUS_NO_TRANSACTION : tx.getStatus();
   }

   public Transaction getTransaction() throws SystemException {
      return (Transaction) currentTransaction.get();
   }

   public DualNodeJtaTransactionImpl getCurrentTransaction() {
      return (DualNodeJtaTransactionImpl) currentTransaction.get();
   }

   public void begin() throws NotSupportedException, SystemException {
      currentTransaction.set(new DualNodeJtaTransactionImpl(this));
   }

   public Transaction suspend() throws SystemException {
      DualNodeJtaTransactionImpl suspended = getCurrentTransaction();
      log.trace(nodeId + ": Suspending " + suspended + " for thread "
               + Thread.currentThread().getName());
      currentTransaction.set(null);
      return suspended;
   }

   public void resume(Transaction transaction) throws InvalidTransactionException,
            IllegalStateException, SystemException {
      currentTransaction.set(transaction);
      log.trace(nodeId + ": Resumed " + transaction + " for thread "
               + Thread.currentThread().getName());
   }

   public void commit() throws RollbackException, HeuristicMixedException,
            HeuristicRollbackException, SecurityException, IllegalStateException, SystemException {
      Transaction tx = getCurrentTransaction();
      if (tx == null) {
         throw new IllegalStateException("no current transaction to commit");
      }
      tx.commit();
   }

   public void rollback() throws IllegalStateException, SecurityException, SystemException {
      Transaction tx = getCurrentTransaction();
      if (tx == null) {
         throw new IllegalStateException("no current transaction");
      }
      tx.rollback();
   }

   public void setRollbackOnly() throws IllegalStateException, SystemException {
      Transaction tx = getCurrentTransaction();
      if (tx == null) {
         throw new IllegalStateException("no current transaction");
      }
      tx.setRollbackOnly();
   }

   public void setTransactionTimeout(int i) throws SystemException {
   }

   void endCurrent(DualNodeJtaTransactionImpl transaction) {
      if (transaction == currentTransaction.get()) {
         currentTransaction.set(null);
      }
   }

   @Override
public String toString() {
      StringBuffer sb = new StringBuffer(getClass().getName());
      sb.append("[nodeId=");
      sb.append(nodeId);
      sb.append("]");
      return sb.toString();
   }
}