Examples of com.sun.sgs.service.Transaction

com.sun.sgs.service.Transaction
This interface represents a single transaction. It is used by participants to join a transaction and manage state associated with a transaction.
Note that some transaction implementations may only support transactions with at most one durable transaction participant, because of the need to communicate the outcome of prepared transactions to transaction participants following a crash when there are multiple durable participants.
All implementations of Transaction must implement equals and hashCode. Two Transactions are equal if and only if they represent the same transaction.
The implementations of the {@link #join join}, {@link #abort abort}, and {@link #registerListener registerListener} methods of this interface are notthread-safe. Callers should insure that calls they make to these methods are made from the thread that created the transaction.

                super.run();
                action1 = new ShutdownServiceAction(service);
                action1.assertBlocked();
                action2 = new ShutdownServiceAction(service);
                action2.assertBlocked();
                Transaction txn = txnProxy.getCurrentTransaction();
                txn.abort(new TestAbortedTransactionException("abort"));
            }

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     * @throws TransactionNotActiveException if there is no currently active
     *                                       transaction
     * @throws TransactionTimeoutException if the transaction has timed out
     */
    static Transaction getCurrentTransaction() {
        Transaction txn = currentTransaction.get();


        if (txn == null) {
            throw new TransactionNotActiveException("no current transaction");
        }


        if (txn.isAborted()) {
            throw new TransactionNotActiveException("Transaction is aborted",
                                                    txn.getAbortCause());
        }


        txn.checkTimeout();


        return txn;
    }

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     * the state of that transaction. 
     * 
     * @return {@code true} if there is a current transaction
     */
    static boolean inTransaction() {
        Transaction txn = currentTransaction.get();
        return (txn != null);
    }

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    static void setCurrentTransaction(Transaction transaction) {
        if (transaction == null) {
            throw new NullPointerException("null transactions not allowed");
        }


        Transaction txn = currentTransaction.get();
        if (txn != null) {
            throw new IllegalStateException("an active transaction is " +
                                            "currently running");
        }

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    static void clearCurrentTransaction(Transaction transaction) {
        if (transaction == null) {
            throw new NullPointerException("transaction cannot be null");
        }


        Transaction txn = currentTransaction.get();
        if (txn == null) {
            throw new IllegalStateException("no active transaction to clear");
        }
        if (!txn.equals(transaction)) {
            throw new IllegalArgumentException("provided transaction is " +
                                               "not currently active");
        }


        currentTransaction.set(null);

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    /**
     * {@inheritDoc}
     */
    public boolean shouldContinue() {
        Transaction txn = txnProxy.getCurrentTransaction();
        return System.currentTimeMillis() - txn.getCreationTime() <
               continueThreshold;
    }

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  final AtomicReference<RuntimeException> exception =
      new AtomicReference<RuntimeException>(null);
  Thread thread = new Thread() {
      public void run() {
    try {
        Transaction t = handle.getTransaction();
        if (txn != t) {
      throw new RuntimeException(
          "Expected " + txn + ", got " + t);
        }
    } catch (RuntimeException e) {

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    /* -- Test Transaction.getId -- */


    @Test
    public void testGetId() {
  txn.abort(abortXcp);
  Transaction txn2 = coordinator.createTransaction(
                coordinator.getDefaultTimeout()).
      getTransaction();
  assertNotNull(txn.getId());
  assertNotNull(txn2.getId());
  assertFalse(Arrays.equals(txn.getId(), txn2.getId()));
    }

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    @Test
    public void testGetCreationTime() throws Exception {
  long now = System.currentTimeMillis();
  Thread.sleep(50);
  Transaction txn1 = coordinator.createTransaction(
                coordinator.getDefaultTimeout()).
      getTransaction();
  Thread.sleep(50);
  Transaction txn2 = coordinator.createTransaction(
                coordinator.getDefaultTimeout()).
      getTransaction();
  assertTrue("Transaction creation time is too early: " +
            txn1.getCreationTime(),
            now < txn1.getCreationTime());
  assertTrue("Transaction creation times out-of-order: " +
            txn1.getCreationTime() + " vs " + txn2.getCreationTime(),
            txn1.getCreationTime() < txn2.getCreationTime());
    }

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  p.setProperty(TransactionCoordinator.TXN_TIMEOUT_PROPERTY, "5000");
  p.setProperty(TransactionCoordinator.TXN_UNBOUNDED_TIMEOUT_PROPERTY,
          "100000");
  TransactionCoordinator coordinator =
      new TransactionCoordinatorImpl(p, collectorHandle);
  Transaction txn = coordinator.createTransaction(
                coordinator.getDefaultTimeout()).getTransaction();
  assertTrue("Incorrect bounded Transaction timeout: " +
       txn.getTimeout(),
       txn.getTimeout() == 5000);
  txn = coordinator.createTransaction(
                ScheduledTask.UNBOUNDED).getTransaction();
  assertTrue("Incorrect unbounded Transaction timeout: " +
       txn.getTimeout(),
       txn.getTimeout() == 100000);
    }

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