Examples of RawTransaction

org.apache.derby.iapi.store.raw.xact.RawTransaction

RawTransaction is the form of Transaction used within the raw store. This allows the break down of RawStore functionality into (at least) three modules (Transactions, Data, Log) without exposing internal information on the external interface.

The transaction will notify any Observer's just before the transaction is committed, aborted or a rollback to savepoint occurs. The argument passed to the update() method of the Observer's will be one of

RawTransaction.COMMIT - transaction is committing
RawTransaction.ABORT - transaction is aborting
RawTransaction.SAVEPOINTROLLBACK - transaction is being rolled back to a savepoint

The observer's must perform a value equality check (equals()) on the update arg to see why it is being notified. @see java.util.Observer

    <BR>
    MT - thread safe
  */
  boolean setExclusiveNoWait(BaseContainerHandle requester) throws StandardException {


    RawTransaction t = requester.getTransaction();


    // comment in setExclusive()
    synchronized (this)
    {
      if ((owner != null) && (t == owner.getTransaction())) {


        if (t.inAbort()) {
          //
          nestedLatch++;
          return true;
        }
      }
      // just deadlock out ...
    }


    // Latch the page, owner is set through the Lockable call backs.
    boolean gotLatch = t.getLockFactory().latchObject(t, this, requester, C_LockFactory.NO_WAIT);
    if (!gotLatch)
      return false;


        synchronized (this)
        {

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Examples of RawTransaction

Examples of org.apache.derby.iapi.store.raw.xact.RawTransaction