Examples of org.apache.derby.iapi.store.access.xa.XAResourceManager

org.apache.derby.iapi.store.access.xa.XAResourceManager

This interface allows access to commit,prepare,abort global transactions as part of a two phase commit protocol. These interfaces have been chosen to be exact implementations required to implement the XAResource interfaces as part of the JTA standard extension.

It is expected that the following interfaces are only used during the recovery portion of 2 phase commit, when the transaction manager is cleaning up after a runtime crash - it is expected that no current context managers exist for the Xid's being operated on. The "online" two phase commit protocol will be implemented by calls directly on a TransactionController.

The XAResource interface is a Java mapping of the industry standard XA resource manager interface. Please refer to: X/Open CAE Specification - Distributed Transaction Processing: The XA Specification, X/Open Document No. XO/CAE/91/300 or ISBN 1 872630 24 3.

    XAXactId xid_im = new XAXactId(xid);


    XATransactionState tranState = getTransactionState(xid_im);


    if (tranState == null) {
      XAResourceManager rm = ra.getXAResourceManager();


      ContextManager inDoubtCM = rm.find(xid);


      // RM also does not know about this xid.
      if (inDoubtCM == null)
        throw new XAException(XAException.XAER_NOTA);


      ContextService csf = ContextService.getFactory();


      csf.setCurrentContextManager(inDoubtCM);
      try
      {
        rm.rollback(inDoubtCM, xid_im);


        // close the connection/transaction since it can never be used again.
        inDoubtCM.cleanupOnError(StandardException.closeException());
        return;
      }

    // ensure immtable and correct equals method.
    XAXactId xid_im = new XAXactId(xid);


    XATransactionState tranState = getTransactionState(xid_im);
    if (tranState == null) {
      XAResourceManager rm = ra.getXAResourceManager();


      ContextManager inDoubtCM = rm.find(xid);


      // RM also does not know about this xid.
      if (inDoubtCM == null)
        throw new XAException(XAException.XAER_NOTA);


      ContextService csf = ContextService.getFactory();


      csf.setCurrentContextManager(inDoubtCM);
      try
      {
        rm.forget(inDoubtCM, xid_im);


        // close the connection/transaction since it can never be used again.
        inDoubtCM.cleanupOnError(StandardException.closeException());
        return;
      }

Examples of org.apache.derby.iapi.store.access.xa.XAResourceManager

Related Classes of org.apache.derby.iapi.store.access.xa.XAResourceManager