Examples of net.jini.core.transaction.Transaction

net.jini.core.transaction.Transaction
Interface for classes representing transactions returned by TransactionManager servers for use with transaction participants that implement the default transaction semantics. The semantics:
The overall effect of executing a set of sibling pure transactions concurrently is always equivalent to some sequential execution.
Ancestor transactions can execute concurrently with child transactions, subject to the locking rules below.
Every transactional operation is described in terms of acquiring locks on objects; these locks are held until the transaction completes. Whatever the lock rules are, conflict rules are defined such that if two operations do not commute, then they acquire conflicting locks. A transaction can acquire a lock only if the conflicting locks are those held by ancestor transactions (or itself). When a subtransaction commits, its locks are inherited by the parent transaction.
If an object is defined to be created under a transaction, then the existence of the object is only visible within that transaction and its inferiors, but will disappear if the transaction aborts. If an object is defined to be deleted under a transaction, then the object is not visible to any transaction (including the deleting transaction) but will reappear if the transaction aborts. When a nested transaction commits, visibility state is inherited by the parent transaction.
Once a transaction reaches the VOTING stage, if all execution under the transaction (and its subtransactions) has finished, then the only reasons the transaction can abort are: the manager crashes (or has crashed); one or more participants crash (or have crashed); or an explicit abort.
Transaction deadlocks are not guaranteed to be prevented or even detected, but managers and participants are permitted to break known deadlocks by aborting transactions.
An orphan transaction (it or one of its ancestors is guaranteed to abort) is not guaranteed to be detected.
Causal ordering information about transactions is not guaranteed to be propagated.
As long as a transaction persists in attempting to acquire a lock that conflicts with another transaction, the participant will persist in attempting to resolve the outcome of the transaction that holds the conflicting lock. @author Sun Microsystems, Inc. @see NestableTransaction @see net.jini.core.transaction.server.TransactionManager @see net.jini.core.transaction.server.NestableTransactionManager @see TransactionFactory @since 1.0


    final Entry entry = new Entry() {
    };


    // dummy mock
    Transaction tx = new Transaction() {


      public void abort() throws UnknownTransactionException,
          CannotAbortException, RemoteException {
      }

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              result = js.read(anotherTemplate, transaction, timeout);
              assertNotNull(result);


              return mandatoryTransaction.execute(new TransactionCallbackWithoutResult() {
                protected void doInTransactionWithoutResult(TransactionStatus status) {
                  Transaction tx = JiniUtils.getTransaction(space);
                  assertSame(transaction ,tx);
                  assertNotNull(spaceTemplate.readIfExists(template,timeout));
                  throw EXCEPTION;
                }

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   * @param jsc The javaspace callback
   * @return the result of the execution.
   */
  public Object execute(JavaSpaceCallback jsc) {
    try {
      Transaction tx = (useTransaction ? getCurrentTransaction() : null);
      Object retval = jsc.doInSpace(this.space, tx);
      return retval;
    }
    catch (Exception ex) {
      throw convertSpaceException(ex);

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     */
    public void run() throws Exception {
        SimpleEntry sampleEntry = new SimpleEntry("TestEntry #1", 1);
        Entry snapshot;
        SimpleEntry result;
        Transaction txn1, txn2;


        // first check that space is empty
        if (!checkSpace(space)) {
            throw new TestException(
                    "Space is not empty in the beginning.");

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    public void run() throws Exception {
        SimpleEntry sampleEntry1 = new SimpleEntry("TestEntry #1", 1);
        SimpleEntry sampleEntry2 = new SimpleEntry("TestEntry #2", 2);
        SimpleEntry sampleEntry3 = new SimpleEntry("TestEntry #1", 2);
        SimpleEntry template;
        Transaction txn;
        String msg;


        // first check that space is empty
        if (!checkSpace(space)) {
            throw new TestException("Space is not empty in the beginning.");

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        SimpleEntry sampleEntry1 = new SimpleEntry("TestEntry #1", 1);
        SimpleEntry sampleEntry2 = new SimpleEntry("TestEntry #2", 2);
        Entry snapshot1;
        Entry snapshot2;
        SimpleEntry result;
        Transaction txn;
        long leaseTime1 = timeout1;
        long leaseTime2 = timeout2;


        // first check that space is empty
        if (!checkSpace(space)) {

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    public void run() throws Exception {
        SimpleEntry sampleEntry1 = new SimpleEntry("TestEntry #1", 1);
        SimpleEntry sampleEntry2 = new SimpleEntry("TestEntry #2", 2);
        SimpleEntry sampleEntry3 = new SimpleEntry("TestEntry #1", 2);
        SimpleEntry template;
        Transaction txn;
        String msg;


        // first check that space is empty
        if (!checkSpace(space)) {
            throw new TestException("Space is not empty in the beginning.");

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     * section 3.1.</P>
     */
    public void run() throws Exception {
        SimpleEntry sampleEntry = new SimpleEntry("TestEntry #1", 1);
        SimpleEntry result;
        Transaction txn1, txn2;


        // first check that space is empty
        if (!checkSpace(space)) {
            throw new TestException(
                    "Space is not empty in the beginning.");

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        SimpleEntry sampleEntry1 = new SimpleEntry("TestEntry #1", 1);
        SimpleEntry sampleEntry2 = new SimpleEntry("TestEntry #2", 2);
        SimpleEntry origEntry1;
        SimpleEntry origEntry2;
        SimpleEntry result;
        Transaction txn;


        // first check that space is empty
        if (!checkSpace(space)) {
            throw new TestException(
                    "Space is not empty in the beginning.");

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    public void run() throws Exception {
        SimpleEntry sampleEntry1 = new SimpleEntry("TestEntry #1", 1);
        SimpleEntry sampleEntry2 = new SimpleEntry("TestEntry #2", 2);
        SimpleEntry sampleEntry3 = new SimpleEntry("TestEntry #1", 2);
        SimpleEntry template;
        Transaction txn;
        String msg;


        // first check that space is empty
        if (!checkSpace(space)) {
            throw new TestException("Space is not empty in the beginning.");

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