Exemplo n.º 1
0
short ExExeUtilLongRunningTcb::finalizeDoLongRunning() 
{

  // Close the statements
  Lng32 rc = cliInterface()->prepareAndExecRowsEpilogue();

  NADELETE(initialOutputVarPtrList_, Queue, getHeap());
  NADELETE(continuingOutputVarPtrList_, Queue, getHeap());
  NADELETEBASIC(lruStmtAndPartInfo_, getHeap());
  NADELETEBASIC(lruStmtWithCKAndPartInfo_, getHeap());

  // if this is an ESP, deallocate transaction
  CliGlobals *cliGlobals = GetCliGlobals();
  if (cliGlobals->isESPProcess())
  {
     NADELETEBASIC(currTransaction_, getHeap());
     currTransaction_ = NULL;
  }

  return 0;
}
Exemplo n.º 2
0
short ExExeUtilLongRunningTcb::doLongRunning()
{
  Lng32 cliRC =0;
  short retcode = 0;
  NABoolean xnAlreadyStarted = FALSE;
     
  // Get the globals stucture of the master executor.
  ExExeStmtGlobals *exeGlob = getGlobals()->castToExExeStmtGlobals();
  ExMasterStmtGlobals *masterGlob = exeGlob->castToExMasterStmtGlobals();

  ex_queue_entry * pentry_down = qparent_.down->getHeadEntry();
  ExExeUtilPrivateState & pstate =
    *((ExExeUtilPrivateState*) pentry_down->pstate);


  CliGlobals *cliGlobals = 0;
  cliGlobals = GetCliGlobals();

  ex_assert(cliGlobals != NULL, "Cli globals is NULL - should have been allocated already");

  if (cliGlobals->isESPProcess())
  {
     if (!currTransaction_)
        currTransaction_ = new (getHeap()) ExTransaction (cliGlobals, getHeap());
  }
  else  // in master executor
  {
     currTransaction_ = masterGlob->getStatement()->getContext()->getTransaction();
  }


  if (currTransaction_->xnInProgress())
  {
     xnAlreadyStarted = TRUE;
  }

  // cannot run LRU when a user transaction is in progress
  if (xnAlreadyStarted)
  {
     ExHandleErrors(qparent_,
         pentry_down,
         0,
         getGlobals(),
         NULL,
         (ExeErrorCode)(-8603),
         NULL,
         exeUtilTdb().getTableName()
         );
     return (-8603);
  }

  SQL_EXEC_ClearDiagnostics(NULL);

  // no Xn in progress. Start one.
  cliRC = currTransaction_->beginTransaction ();

  if (cliRC < 0)
  {
      ExHandleErrors(qparent_,
        pentry_down,
        0,
        getGlobals(),
        NULL,
        (ExeErrorCode)(cliRC),
        NULL,
        exeUtilTdb().getTableName()
        );
       return (short) cliRC;
  }

  retcode = executeLongRunningQuery();

  // Rollback the transaction, if there is an error.
  if (retcode < 0)
  {
     // rollback the transaction
     cliRC = currTransaction_->rollbackTransaction ();

     return retcode;
  }
  else 
  {
    // commit the transaction
    cliRC = currTransaction_->commitTransaction ();

    if (cliRC < 0)
    {
       ExHandleErrors(qparent_,
           pentry_down,
           0,
           getGlobals(),
           NULL,
          (ExeErrorCode)(cliRC),
           NULL,
           exeUtilTdb().getTableName()
           );

       return short(cliRC);
    }

    addTransactionCount();
  }

  return retcode;
}