C++ NdbScanOperation::nextResult方法代码示例

int HugoOperations::execute_NoCommit(Ndb* pNdb, AbortOption eao){

  int check;
  check = pTrans->execute(NoCommit, eao);   

  const NdbError err = pTrans->getNdbError();
  if( check == -1 || err.code) {
    NDB_ERR(err);
    setNdbError(err);
    const NdbOperation* pOp = pTrans->getNdbErrorOperation();
    while (pOp != NULL)
    {
      const NdbError err2 = pOp->getNdbError();
      if (err2.code)
      {
	NDB_ERR(err2);
        setNdbError(err2);
      }
      pOp = pTrans->getNextCompletedOperation(pOp);
    }
    if (err.code == 0)
    {
      g_err << __LINE__ << " equal for row failed" << endl;
      return NDBT_FAILED;
    }
    return err.code;
  }

  for(unsigned int i = 0; i<m_result_sets.size(); i++){
    m_executed_result_sets.push_back(m_result_sets[i]);

    int rows = m_result_sets[i].records;
    NdbScanOperation* rs = m_result_sets[i].m_result_set;
    int res = rs->nextResult();
    switch(res){
    case 1:
      return 626;
    case -1:
      const NdbError err = pTrans->getNdbError();
      NDB_ERR(err);
      setNdbError(err);
      return (err.code > 0 ? err.code : NDBT_FAILED);
    }

    // A row found

    switch(rows){
    case 0:
      return 4000;
    default:
    case 1:
      break;
    }
  }

  m_result_sets.clear();

  return NDBT_OK;
}

int HugoOperations::execute_Commit(Ndb* pNdb,
				   AbortOption eao){

  int check = 0;
  check = pTrans->execute(Commit, eao);   

  const NdbError err = pTrans->getNdbError();
  if( check == -1 || err.code) {
    ERR(err);
    setNdbError(err);
    NdbOperation* pOp = pTrans->getNdbErrorOperation();
    if (pOp != NULL){
      const NdbError err2 = pOp->getNdbError();
      ERR(err2);
      setNdbError(err2);
    }
    if (err.code == 0)
      return NDBT_FAILED;
    return err.code;
  }

  for(unsigned int i = 0; i<m_result_sets.size(); i++){
    m_executed_result_sets.push_back(m_result_sets[i]);

    int rows = m_result_sets[i].records;
    NdbScanOperation* rs = m_result_sets[i].m_result_set;
    int res = rs->nextResult();
    switch(res){
    case 1:
      return 626;
    case -1:
      const NdbError err = pTrans->getNdbError();
      ERR(err);
      setNdbError(err);
      return (err.code > 0 ? err.code : NDBT_FAILED);
    }

    // A row found

    switch(rows){
    case 0:
      return 4000;
    default:
      m_result_sets[i].records--;
      break;
    }
  }

  m_result_sets.clear();
  
  return NDBT_OK;
}

int runBuddyTransNoTimeout(NDBT_Context* ctx, NDBT_Step* step){
  int result = NDBT_OK;
  int loops = ctx->getNumLoops();
  int records = ctx->getNumRecords();
  int stepNo = step->getStepNo();
  int maxSleep = (int)(TIMEOUT * 0.3);
  ndbout << "TransactionInactiveTimeout="<< TIMEOUT
	 << ", maxSleep="<<maxSleep<<endl;

  HugoOperations hugoOps(*ctx->getTab());
  Ndb* pNdb = GETNDB(step);

  for (int l = 1; l < loops && result == NDBT_OK; l++){

    do{
      // Start an insert trans
      CHECK(hugoOps.startTransaction(pNdb) == 0);
      int recordNo = records + (stepNo*loops) + l;
      CHECK(hugoOps.pkInsertRecord(pNdb, recordNo) == 0);
      CHECK(hugoOps.execute_NoCommit(pNdb) == 0);
      
      int remain = maxSleep;
      for (int i = 0; i < 3; i++)
      {
        NdbTransaction* pTrans = hugoOps.getTransaction();

        // Perform buddy scan reads
        NdbScanOperation* pOp = pTrans->getNdbScanOperation(ctx->getTab());
        CHECK(pOp != 0);
        CHECK(pOp->readTuples(NdbOperation::LM_Read, 0, 0, 1) == 0);
        CHECK(pTrans->execute(NoCommit) == 0);
        while(pOp->nextResult() == 0);
	
        int sleep = myRandom48(remain);
        remain = remain - sleep + 1;
        ndbout << "Sleeping for " << sleep << " milliseconds" << endl;
        NdbSleep_MilliSleep(sleep);
      }

      // Expect that transaction has NOT timed-out
      CHECK(hugoOps.execute_Commit(pNdb) == 0); 
    
    } while(false);

    hugoOps.closeTransaction(pNdb);
  }

  return result;
}

int runBuddyTransTimeout(NDBT_Context* ctx, NDBT_Step* step){
  int result = NDBT_OK;
  int loops = ctx->getNumLoops();
  int records = ctx->getNumRecords();
  int stepNo = step->getStepNo();
  ndbout << "TransactionInactiveTimeout="<< TIMEOUT <<endl;

  HugoOperations hugoOps(*ctx->getTab());
  Ndb* pNdb = GETNDB(step);

  for (int l = 1; l < loops && result == NDBT_OK; l++){

    NdbTransaction* pTrans = 0;
    do{
      pTrans = pNdb->startTransaction();
      NdbScanOperation* pOp = pTrans->getNdbScanOperation(ctx->getTab());
      CHECK(pOp->readTuples(NdbOperation::LM_Read, 0, 0, 1) == 0);
      CHECK(pTrans->execute(NoCommit) == 0);
      
      int sleep = 2 * TIMEOUT;
      ndbout << "Sleeping for " << sleep << " milliseconds" << endl;
      NdbSleep_MilliSleep(sleep);
    
      int res = 0;
      while((res = pOp->nextResult()) == 0);
      ndbout_c("res: %d", res);
      CHECK(res == -1);
      
    } while(false);
    
    if (pTrans)
    {
      pTrans->close();
    }
  }
  
  return result;
}

//.........这里部分代码省略.........
                                   &options,
                                   sizeof(NdbScanOperation::ScanOptions));
      if (pIOp == NULL)
      {
        err(pTrans->getNdbError());
        abort();
      }
        
      assert(pIOp);

      switch(g_paramters[P_BOUND].value){
      case 0: // All
	break;
      case 1: // None
        check= setEqBound(pIOp, g_index_record, 0, 0);
        assert(check == 0);
	break;
      case 2: { // 1 row
      default:  
	assert(g_table->getNoOfPrimaryKeys() == 1); // only impl. so far
	int tot = g_paramters[P_ROWS].value;
	int row = rand() % tot;

        check= setEqBound(pIOp, g_index_record, row, 0);
        assert(check == 0);
	break;
      }
      case 3: { // read multi
	int multi = g_paramters[P_MULTI].value;
	int tot = g_paramters[P_ROWS].value;
        int rangeStart= i;
        for(; multi > 0 && i < iter; --multi, i++)
	{
	  int row = rand() % tot;
          /* Set range num relative to this set of bounds */
          check= setEqBound(pIOp, g_index_record, row, i- rangeStart);
          if (check != 0)
          {
            err(pIOp->getNdbError());
            abort();
          }
          assert(check == 0);
	}
	break;
      }
      }
    }
    assert(pOp);
    
    assert(check == 0);

    int rows = 0;
    check = pTrans->execute(NoCommit);
    assert(check == 0);
    int fetch = g_paramters[P_FETCH].value;

    const char * result_row_ptr;

    while((check = pOp->nextResult(&result_row_ptr, true, false)) == 0){
      do {
	rows++;
      } while(!fetch && ((check = pOp->nextResult(&result_row_ptr, false, false)) == 0));
      if(check == -1){
        err(pTrans->getNdbError());
        return -1;
      }
      assert(check == 2);
    }

    if(check == -1){
      err(pTrans->getNdbError());
      return -1;
    }
    assert(check == 1);

    pTrans->close();
    pTrans = 0;

    stop = NdbTick_CurrentMillisecond();
    
    int time_passed= (int)(stop - start1);
    sample_rows += rows;
    sum_time+= time_passed;
    tot_rows+= rows;
    
    if(sample_rows >= tot)
    {
      int sample_time = (int)(stop - sample_start);
      g_info << "Found " << sample_rows << " rows" << endl;
      g_err.println("Time: %d ms = %u rows/sec", sample_time,
		    (1000*sample_rows)/sample_time);
      sample_rows = 0;
      sample_start = stop;
    }
  }
  
  g_err.println("Avg time: %d ms = %u rows/sec", sum_time/tot_rows,
                (1000*tot_rows)/sum_time);
  return 0;
}

//.........这里部分代码省略.........
            rowid = pOp->getValue(NdbDictionary::Column::ROWID);
        }

        if (use_gci)
        {
            gci = pOp->getValue(NdbDictionary::Column::ROW_GCI);
        }

        check = pTrans->execute(NdbTransaction::NoCommit);
        if( check == -1 ) {
            const NdbError err = pTrans->getNdbError();

            if (err.status == NdbError::TemporaryError) {
                pNdb->closeTransaction(pTrans);
                NdbSleep_MilliSleep(50);
                retryAttempt++;
                continue;
            }
            ERR(err);
            pNdb->closeTransaction(pTrans);
            return -1;
        }

        if (rowid)
            ndbout << "ROWID\t";

        if (gci)
            ndbout << "\tGCI";

        if (headers && !nodata)
            row->header(ndbout);

        if (disk_ref)
            ndbout << "\tDISK_REF";

        ndbout << endl;

        int eof;
        int rows = 0;
        eof = pOp->nextResult();

        while(eof == 0) {
            rows++;

            if (useHexFormat)
                ndbout.setHexFormat(1);

            if (rowid)
            {
                ndbout << "[ fragment: " << frag->u_32_value()
                       << " m_page: " << rowid->u_32_value()
                       << " m_page_idx: " << *(Uint32*)(rowid->aRef() + 4) << " ]";
                ndbout << "\t";
            }

            if (gci)
            {
                if (gci->isNULL())
                    ndbout << "NULL\t";
                else
                    ndbout << gci->u_64_value() << "\t";
            }

            if (!nodata)
                ndbout << (*row);

            if(disk_ref)
            {
                ndbout << "\t";
                ndbout << "[ m_file_no: " << *(Uint16*)(disk_ref->aRef()+6)
                       << " m_page: " << disk_ref->u_32_value()
                       << " m_page_idx: " << *(Uint16*)(disk_ref->aRef() + 4) << " ]";
            }

            if (rowid || disk_ref || gci || !nodata)
                ndbout << endl;
            eof = pOp->nextResult();
        }
        if (eof == -1) {
            const NdbError err = pTrans->getNdbError();

            if (err.status == NdbError::TemporaryError) {
                pNdb->closeTransaction(pTrans);
                NdbSleep_MilliSleep(50);
                retryAttempt++;
                continue;
            }
            ERR(err);
            pNdb->closeTransaction(pTrans);
            return -1;
        }

        pNdb->closeTransaction(pTrans);

        ndbout << rows << " rows returned" << endl;

        return 0;
    }
    return -1;
}

//.........这里部分代码省略.........
      if (err.status == NdbError::TemporaryError)
      {
	milliSleep(50);
	retryAttempt++;
	continue;
      }
     std::cout << err.message << std::endl;
      return -1;
    }
    /*
     * Define a scan operation. 
     * NDBAPI.
     */
    myScanOp = myTrans->getNdbScanOperation(myTable);	
    if (myScanOp == NULL) 
    {
      std::cout << myTrans->getNdbError().message << std::endl;
      myNdb->closeTransaction(myTrans);
      return -1;
    }

    /**
     * Read without locks, without being placed in lock queue
     */
    if( myScanOp->readTuples(NdbOperation::LM_CommittedRead) == -1)
    {
      std::cout << myTrans->getNdbError().message << std::endl;
      myNdb->closeTransaction(myTrans);
      return -1;
    } 

    /**
     * Define storage for fetched attributes.
     * E.g., the resulting attributes of executing
     * myOp->getValue("REG_NO") is placed in myRecAttr[0].
     * No data exists in myRecAttr until transaction has commited!
     */
    myRecAttr[0] = myScanOp->getValue("REG_NO");
    myRecAttr[1] = myScanOp->getValue("BRAND");
    myRecAttr[2] = myScanOp->getValue("COLOR");
    if(myRecAttr[0] ==NULL || myRecAttr[1] == NULL || myRecAttr[2]==NULL) 
    {
	std::cout << myTrans->getNdbError().message << std::endl;
	myNdb->closeTransaction(myTrans);
	return -1;
    }
    /**
     * Start scan   (NoCommit since we are only reading at this stage);
     */     
    if(myTrans->execute(NdbTransaction::NoCommit) != 0){      
      err = myTrans->getNdbError();    
      if(err.status == NdbError::TemporaryError){
	std::cout << myTrans->getNdbError().message << std::endl;
	myNdb->closeTransaction(myTrans);
	milliSleep(50);
	continue;
      }
      std::cout << err.code << std::endl;
      std::cout << myTrans->getNdbError().code << std::endl;
      myNdb->closeTransaction(myTrans);
      return -1;
    }
    
    /**
     * start of loop: nextResult(true) means that "parallelism" number of
     * rows are fetched from NDB and cached in NDBAPI
     */    
    while((check = myScanOp->nextResult(true)) == 0){
      do {
	
	fetchedRows++;
	/**
	 * print  REG_NO unsigned int
	 */
	std::cout << myRecAttr[0]->u_32_value() << "\t";

	/**
	 * print  BRAND character string
	 */
	std::cout << myRecAttr[1]->aRef() << "\t";

	/**
	 * print  COLOR character string
	 */
	std::cout << myRecAttr[2]->aRef() << std::endl;

	/**
	 * nextResult(false) means that the records 
	 * cached in the NDBAPI are modified before
	 * fetching more rows from NDB.
	 */    
      } while((check = myScanOp->nextResult(false)) == 0);

    }    
    myNdb->closeTransaction(myTrans);
    return 1;
  }
  return -1;

}

int
select_count(Ndb* pNdb, const NdbDictionary::Table* pTab,
             int parallelism,
             Uint64* count_rows,
             NdbOperation::LockMode lock) {

    int                  retryAttempt = 0;
    const int            retryMax = 100;
    int                  check;
    NdbTransaction       *pTrans;
    NdbScanOperation	       *pOp;
    const Uint32 codeWords= 1;
    Uint32 codeSpace[ codeWords ];
    NdbInterpretedCode code(NULL, // Table is irrelevant
                            &codeSpace[0],
                            codeWords);
    if ((code.interpret_exit_last_row() != 0) ||
            (code.finalise() != 0))
    {
        ERR(code.getNdbError());
        return NDBT_FAILED;
    }

    while (true) {

        if (retryAttempt >= retryMax) {
            g_info << "ERROR: has retried this operation " << retryAttempt
                   << " times, failing!" << endl;
            return NDBT_FAILED;
        }

        pTrans = pNdb->startTransaction();
        if (pTrans == NULL) {
            const NdbError err = pNdb->getNdbError();

            if (err.status == NdbError::TemporaryError) {
                NdbSleep_MilliSleep(50);
                retryAttempt++;
                continue;
            }
            ERR(err);
            return NDBT_FAILED;
        }
        pOp = pTrans->getNdbScanOperation(pTab->getName());
        if (pOp == NULL) {
            ERR(pTrans->getNdbError());
            pNdb->closeTransaction(pTrans);
            return NDBT_FAILED;
        }

        if( pOp->readTuples(NdbScanOperation::LM_Dirty) ) {
            ERR(pTrans->getNdbError());
            pNdb->closeTransaction(pTrans);
            return NDBT_FAILED;
        }


        check = pOp->setInterpretedCode(&code);
        if( check == -1 ) {
            ERR(pTrans->getNdbError());
            pNdb->closeTransaction(pTrans);
            return NDBT_FAILED;
        }

        Uint64 tmp;
        Uint32 row_size;
        pOp->getValue(NdbDictionary::Column::ROW_COUNT, (char*)&tmp);
        pOp->getValue(NdbDictionary::Column::ROW_SIZE, (char*)&row_size);
        check = pTrans->execute(NdbTransaction::NoCommit);
        if( check == -1 ) {
            ERR(pTrans->getNdbError());
            pNdb->closeTransaction(pTrans);
            return NDBT_FAILED;
        }

        Uint64 row_count = 0;
        int eof;
        while((eof = pOp->nextResult(true)) == 0) {
            row_count += tmp;
        }

        if (eof == -1) {
            const NdbError err = pTrans->getNdbError();

            if (err.status == NdbError::TemporaryError) {
                pNdb->closeTransaction(pTrans);
                NdbSleep_MilliSleep(50);
                retryAttempt++;
                continue;
            }
            ERR(err);
            pNdb->closeTransaction(pTrans);
            return NDBT_FAILED;
        }

        pNdb->closeTransaction(pTrans);

        if (count_rows != NULL) {
            *count_rows = row_count;
        }
//.........这里部分代码省略.........

int 
UtilTransactions::selectCount(Ndb* pNdb, 
			      int parallelism,
			      int* count_rows,
			      NdbOperation::LockMode lm,
			      NdbConnection* pTrans){
  
  int                  retryAttempt = 0;
  const int            retryMax = 100;
  int                  check;
  NdbScanOperation     *pOp;

  if(!pTrans)
    pTrans = pNdb->startTransaction();
    
  while (true){

    if (retryAttempt >= retryMax){
      g_info << "ERROR: has retried this operation " << retryAttempt 
	     << " times, failing!" << endl;
      return NDBT_FAILED;
    }
    pOp = getScanOperation(pTrans);
    if (pOp == NULL) {
      ERR(pTrans->getNdbError());
      closeTransaction(pNdb);
      return NDBT_FAILED;
    }

    if( pOp->readTuples(lm) ) {
      ERR(pTrans->getNdbError());
      closeTransaction(pNdb);
      return NDBT_FAILED;
    }

    if(0){
      NdbScanFilter sf(pOp);
      sf.begin(NdbScanFilter::OR);
      sf.eq(2, (Uint32)30);
      sf.end();
    } else {
      check = pOp->interpret_exit_ok();
      if( check == -1 ) {
	ERR(pTrans->getNdbError());
	closeTransaction(pNdb);
	return NDBT_FAILED;
      }
    }
    
    
    check = pTrans->execute(NoCommit, AbortOnError);
    if( check == -1 ) {
      ERR(pTrans->getNdbError());
      closeTransaction(pNdb);
      return NDBT_FAILED;
    }

    int eof;
    int rows = 0;
    

    while((eof = pOp->nextResult()) == 0){
      rows++;
    }
    if (eof == -1) {
      const NdbError err = pTrans->getNdbError();
      
      if (err.status == NdbError::TemporaryError){
	closeTransaction(pNdb);
	NdbSleep_MilliSleep(50);
	retryAttempt++;
	continue;
      }
      ERR(err);
      closeTransaction(pNdb);
      return NDBT_FAILED;
    }
    
    closeTransaction(pNdb);
    
    if (count_rows != NULL){
      *count_rows = rows;
    }
    
    return NDBT_OK;
  }
  return NDBT_FAILED;
}

//.........这里部分代码省略.........
    }

    pOp = getScanOperation(pTrans);
    if (pOp == NULL) {
      const NdbError err = pNdb->getNdbError();
      closeTransaction(pNdb);

      if (err.status == NdbError::TemporaryError){
	ERR(err);
	NdbSleep_MilliSleep(50);
	retryAttempt++;
	continue;
      }
      ERR(err);
      return NDBT_FAILED;
    }

    if( pOp->readTuples(lm, 0, parallelism) ) {
      ERR(pTrans->getNdbError());
      closeTransaction(pNdb);
      return NDBT_FAILED;
    }

    check = pOp->interpret_exit_ok();
    if( check == -1 ) {
      ERR(pTrans->getNdbError());
      closeTransaction(pNdb);
      return NDBT_FAILED;
    }
    
    // Call getValue for all the attributes supplied in attrib_list
    // ************************************************
    for (int a = 0; a < noAttribs; a++){
      if (attrib_list[a] < tab.getNoOfColumns()){ 
	g_info << "getValue(" << attrib_list[a] << ")" << endl;
	if ((row.attributeStore(attrib_list[a]) =  
	     pOp->getValue(tab.getColumn(attrib_list[a])->getName())) == 0) {
	  ERR(pTrans->getNdbError());
	  closeTransaction(pNdb);
	  return NDBT_FAILED;
	}
      }
    }
    // *************************************************
    
    check = pTrans->execute(NoCommit, AbortOnError);
    if( check == -1 ) {
      const NdbError err = pTrans->getNdbError();

      if (err.status == NdbError::TemporaryError){
	ERR(err);
	closeTransaction(pNdb);
	NdbSleep_MilliSleep(50);
	retryAttempt++;
	continue;
      }
      ERR(err);
      closeTransaction(pNdb);
      return NDBT_FAILED;
    }
    
    int eof;
    int rows = 0;
    
    
    while((eof = pOp->nextResult()) == 0){
      rows++;
      
      // Call callback for each record returned
      if(fn != NULL)
	fn(&row);
    }
    if (eof == -1) {
      const NdbError err = pTrans->getNdbError();
      
      if (err.status == NdbError::TemporaryError){
	ERR(err);
	closeTransaction(pNdb);
	NdbSleep_MilliSleep(50);
	retryAttempt++;
	continue;
      }
      ERR(err);
      closeTransaction(pNdb);
      return NDBT_FAILED;
    }
    
    closeTransaction(pNdb);
    g_info << rows << " rows have been read" << endl;
    if (records != 0 && rows != records){
      g_info << "Check expected number of records failed" << endl 
	     << "  expected=" << records <<", " << endl
	     << "  read=" << rows << endl;
      return NDBT_FAILED;
    }
    
    return NDBT_OK;
  }
  return NDBT_FAILED;
}

//.........这里部分代码省略.........
	int tot = g_paramters[P_ROWS].value;
	for(; multi > 0 && i < iter; --multi, i++)
	{
	  int row = rand() % tot;
	  pIOp->setBound((Uint32)0, NdbIndexScanOperation::BoundEQ, &row);
	  pIOp->end_of_bound(i);
	}
	if(g_paramters[P_RESET].value == 2)
	  goto execute;
	break;
      }
      }
    }
    assert(pOp);
    
    switch(g_paramters[P_FILT].value){
    case 0: // All
      check = pOp->interpret_exit_ok();
      break;
    case 1: // None
      check = pOp->interpret_exit_nok();
      break;
    case 2: { // 1 row
    default:  
      assert(g_table->getNoOfPrimaryKeys() == 1); // only impl. so far
      abort();
#if 0
      int tot = g_paramters[P_ROWS].value;
      int row = rand() % tot;
      NdbScanFilter filter(pOp) ;   
      filter.begin(NdbScanFilter::AND);
      fix_eq(filter, pOp, row);
      filter.end();
      break;
#endif
    }
    }
    if(check != 0){
      err(pOp->getNdbError());
      return -1;
    }
    assert(check == 0);

    if(g_paramters[P_RESET].value == 1)
      g_paramters[P_RESET].value = 2;
    
    for(int i = 0; i<g_table->getNoOfColumns(); i++){
      pOp->getValue(i);
    }

    if(g_paramters[P_RESET].value == 1)
      g_paramters[P_RESET].value = 2;
execute:
    int rows = 0;
    check = pTrans->execute(NoCommit);
    assert(check == 0);
    int fetch = g_paramters[P_FETCH].value;
    while((check = pOp->nextResult(true)) == 0){
      do {
	rows++;
      } while(!fetch && ((check = pOp->nextResult(false)) == 0));
      if(check == -1){
        err(pTrans->getNdbError());
        return -1;
      }
      assert(check == 2);
    }

    if(check == -1){
      err(pTrans->getNdbError());
      return -1;
    }
    assert(check == 1);
    if(g_paramters[P_RESET].value == 0)
    {
      pTrans->close();
      pTrans = 0;
    }
    stop = NdbTick_CurrentMillisecond();
    
    int time_passed= (int)(stop - start1);
    sample_rows += rows;
    sum_time+= time_passed;
    tot_rows+= rows;
    
    if(sample_rows >= tot)
    {
      int sample_time = (int)(stop - sample_start);
      g_info << "Found " << sample_rows << " rows" << endl;
      g_err.println("Time: %d ms = %u rows/sec", sample_time,
		    (1000*sample_rows)/sample_time);
      sample_rows = 0;
      sample_start = stop;
    }
  }
  
  g_err.println("Avg time: %d ms = %u rows/sec", sum_time/tot_rows,
                (1000*tot_rows)/sum_time);
  return 0;
}

int calc_var_column(const NdbDictionary::Table * t,
		    const NdbDictionary::Index * ix,
		    int col,
		    Ndb* ndb,
		    bool longvarchar,
		    bool ftScan,
            bool ignoreData)
{
  
  char buff[8052];
  memset(buff, 0, sizeof(buff));
  int sz=0;
  NdbTransaction * trans = ndb->startTransaction();
  if(trans==0)
    abort();

  NdbScanOperation * sop;
  sop=trans->getNdbScanOperation(t);

  sop->readTuples();
  NdbRecAttr * attr=sop->getValue(col, buff);
  int rows=0;
  int charset_size=1;
  bool no_data=false;  

  //Set charset cost (for binary and latin1 cost is 1)
  const NdbDictionary::Column  * c = t->getColumn(col);
  const NdbDictionary::Column::Type type = c->getType();
  if ((type == NdbDictionary::Column::Varchar) || (type == NdbDictionary::Column::Longvarchar))
  {
    CHARSET_INFO * cs2;
    cs2= (CHARSET_INFO*)(c->getCharset());

    if(cs2!=0)
    {       
      if(strncmp(cs2->name, "utf8",4)==0)
      {
        charset_size=3;
        printf(  "---\tWARNING! cs2->name charset used, each character cost : %d bytes\n",charset_size);
      }

      if(strncmp(cs2->name, "ucs2",4)==0)
      {
        charset_size=2;
        printf(  "---\tWARNING! cs2->name charset used, each character cost : %d bytes\n",charset_size);
      }
    }
  }

  //Set var header size
  int headerSize=longvarchar ? 2 : 1;



  if(trans->execute(NdbTransaction::NoCommit, 
		    NdbOperation::AbortOnError, 1) == -1)
  {
	no_data=true;
	trans->close();
  }


  if(!no_data)
  {
    int check=0;
    while( ((check = sop->nextResult(true)) == 0) && !ignoreData)
	{  
	  rows++;
      if (verbose) 
      {
        printf("attribut %d size = %d \n",rows,attr->isNULL()==1 ? 0 : attr->get_size_in_bytes());  
      }


      if(attr->isNULL()==1)  
      {
        sz+=0; //for the time being until we know for sure..
      }
      else
      { //attr->get_size_in_bytes return lengh of attr including header attr cost = (length-header*charset)
        sz+=((attr->get_size_in_bytes() - headerSize)* charset_size);
      }
            
	  if(rows==1024 && !ftScan)
	    break;
	}
    trans->close();
  }

  if(rows==0)
  {
    sz = (int)(((float)(t->getColumn(col)->getSizeInBytes()))* (float)((float)loadfactor/100));
    printf("---\tWARNING! No reference data found for VAR*. Defaulting to max size (loadfactor=100 percent)..%d bytes \n",sz);
    printf("\tConsider loading database with average data for exact measurement\n");
      
    return sz+waste_sz(sz);
  }

  int tmpsz=(sz/rows)+headerSize;
  sz=tmpsz + waste_sz(tmpsz);
//.........这里部分代码省略.........

int calc_blob_column(const NdbDictionary::Table * t,
		   const NdbDictionary::Index * ix,
		   int col,
		   Ndb* ndb,
		   int & szRam,
		   int & szDisk,
		   bool ftScan)
{

  NdbTransaction * trans = ndb->startTransaction();
  NdbScanOperation * sop = trans->getNdbScanOperation(t);

  sop->readTuples();

  NdbBlob * blob = sop->getBlobHandle(col);  
  bool no_data=false;
  if(trans->execute(NdbTransaction::NoCommit, 
		    NdbOperation::AbortOnError, 1) == -1)
    {
      no_data=true;
      sop->close();
      trans->close();
    }
  
  unsigned long long len=0;


  int rows=0;
  int check=0;
  const NdbDictionary::Column *  c = t->getColumn(col);
  int part_size= c->getPartSize();
  if(!no_data)
    {
      while(((check = sop->nextResult(true)) == 0) && !ignoreData)
	{
	  int isnull;
	  rows++;
	  blob->getNull(isnull);
	  if(isnull)
	    len=0;
	  else	    
	    blob->getLength(len);
	  
	  /*	  
		  printf("blob is %llu\n", len);
		  if(len>256)
		  {
		  szRam+=(((len-256)/part_size) + 1)*part_size+256;
		  printf("len2=%llu, part-size=%d, len=%llu\n", (((len-256)/part_size) + 1)*part_size+256, part_size, len);
		  
		  }
		  else
	  */
	  
	  szRam+=(int)len;
	  if(rows==1000 && !ftScan)
	    break;
	}
      sop->close();
      trans->close();
    }
  if(rows==0)
    {
      if (c->getStorageType() == NdbDictionary::Column::StorageTypeDisk)
      {
          printf("---\tWARNING! No reference data found for BLOB/TEXT. "
             "Defaulting to 256 bytes DataMemory, %d bytes Diskspace! \n",(part_size<=256 ? 0:part_size));
          printf("\tConsider loading database with average data for exact"
             " measurement. \n");
          szRam=256;
          szDisk=(part_size<=256 ? 0:part_size);
          return 0;
      }
      else
      {
         printf("---\tWARNING! No reference data found for BLOB/TEXT. "
	        "Defaulting to %d bytes DataMemory ! \n", (part_size<=256 ? 256:part_size+256));
         printf("\tConsider loading database with average data for exact"
	        " measurement. \n");
         szRam=(part_size<=256 ? 256:part_size+256);
         szDisk=0;
         return 0;
      }
    }
  if (c->getStorageType() == NdbDictionary::Column::StorageTypeDisk)
    {
    int averageSz=szRam/rows;
    if((averageSz)>256)
	  {
      szRam=256;
	  szDisk=((averageSz-256)/part_size) *part_size + (((averageSz-256)%part_size)==0 ? 0:part_size);
	  }
      else
	  {
      szRam=256;
	  szDisk=0;
	  }
    }
  else
    {
//.........这里部分代码省略.........

int runTestBug34107(NDBT_Context* ctx, NDBT_Step* step){
  const NdbDictionary::Table * pTab = ctx->getTab();
  Ndb* pNdb = GETNDB(step);
  const Uint32 okSize= 10000;
  const Uint32 tooBig= 30000;

  Uint32 codeBuff[tooBig];

  int i;
  for (i = 0; i <= 1; i++) {
    g_info << "bug34107:" << (i == 0 ? " small" : " too big") << endl;

    NdbConnection* pTrans = pNdb->startTransaction();
    if (pTrans == NULL){
      ERR(pNdb->getNdbError());
      return NDBT_FAILED;
    }
    
    NdbScanOperation* pOp = pTrans->getNdbScanOperation(pTab->getName());
    if (pOp == NULL) {
      ERR(pTrans->getNdbError());
      pNdb->closeTransaction(pTrans);
      return NDBT_FAILED;
    }
    
    if (pOp->readTuples() == -1) {
      ERR(pOp->getNdbError());
      pNdb->closeTransaction(pTrans);
      return NDBT_FAILED;
    }

    /* Test kernel mechanism for dealing with too large program
     * We need to provide our own program buffer as default
     * NdbInterpretedCode buffer will not grow larger than 
     * NDB_MAX_SCANFILTER_SIZE
     */

    NdbInterpretedCode code(NULL, // Table is irrelevant
                            codeBuff,
                            tooBig); // Size of codeBuff
    
    int n = i == 0 ? okSize : tooBig;
    int k;

    for (k = 0; k < n; k++) {

      // inserts 1 word ATTRINFO

      if (code.interpret_exit_ok() == -1) {
        ERR(code.getNdbError());
        pNdb->closeTransaction(pTrans);
        return NDBT_FAILED;
      }
    }

    if (code.finalise() != 0)
    {
      ERR(code.getNdbError());
      pNdb->closeTransaction(pTrans);
      return NDBT_FAILED;
    }

    if (pOp->setInterpretedCode(&code) != 0)
    {
      ERR(pOp->getNdbError());
      pNdb->closeTransaction(pTrans);
      return NDBT_FAILED;
    }
      
    if (pTrans->execute(NoCommit) == -1) {
      ERR(pTrans->getNdbError());
      pNdb->closeTransaction(pTrans);
      return NDBT_FAILED;
    }

    int ret;
    while ((ret = pOp->nextResult()) == 0)
      ;
    g_info << "ret=" << ret << " err=" << pOp->getNdbError().code << endl;

    if (i == 0 && ret != 1) {
      ERR(pTrans->getNdbError());
      pNdb->closeTransaction(pTrans);
      return NDBT_FAILED;
    }

    if (i == 1 && ret != -1) {
      g_err << "unexpected big filter success" << endl;
      pNdb->closeTransaction(pTrans);
      return NDBT_FAILED;
    }
    if (i == 1 && pOp->getNdbError().code != 874) {
      g_err << "unexpected big filter error code, wanted 874" << endl;
      ERR(pTrans->getNdbError());
      pNdb->closeTransaction(pTrans);
      return NDBT_FAILED;
    }

    pNdb->closeTransaction(pTrans);
  }
//.........这里部分代码省略.........

int 
UtilTransactions::verifyOrderedIndex(Ndb* pNdb,
				     const NdbDictionary::Index* pIndex,
				     int parallelism,
				     bool transactional){
  
  int                  retryAttempt = 0;
  const int            retryMax = 100;
  int                  check;
  NdbScanOperation     *pOp;
  NdbIndexScanOperation * iop = 0;

  NDBT_ResultRow       scanRow(tab);
  NDBT_ResultRow       pkRow(tab);
  NDBT_ResultRow       indexRow(tab);
  const char * indexName = pIndex->getName();

  int res;
  parallelism = 1;
  
  while (true){

    if (retryAttempt >= retryMax){
      g_info << "ERROR: has retried this operation " << retryAttempt 
	     << " times, failing!" << endl;
      return NDBT_FAILED;
    }

    pTrans = pNdb->startTransaction();
    if (pTrans == NULL) {
      const NdbError err = pNdb->getNdbError();

      if (err.status == NdbError::TemporaryError){
	ERR(err);
	NdbSleep_MilliSleep(50);
	retryAttempt++;
	continue;
      }
      ERR(err);
      return NDBT_FAILED;
    }

    pOp = pTrans->getNdbScanOperation(tab.getName());	
    if (pOp == NULL) {
      ERR(pTrans->getNdbError());
      closeTransaction(pNdb);
      return NDBT_FAILED;
    }

    if( pOp->readTuples(NdbScanOperation::LM_Read, 0, parallelism) ) {
      ERR(pTrans->getNdbError());
      closeTransaction(pNdb);
      return NDBT_FAILED;
    }

    check = pOp->interpret_exit_ok();
    if( check == -1 ) {
      ERR(pTrans->getNdbError());
      closeTransaction(pNdb);
      return NDBT_FAILED;
    }

    if(get_values(pOp, scanRow))
    {
      abort();
    }

    check = pTrans->execute(NoCommit, AbortOnError);
    if( check == -1 ) {
      const NdbError err = pTrans->getNdbError();
      
      if (err.status == NdbError::TemporaryError){
	ERR(err);
	closeTransaction(pNdb);
	NdbSleep_MilliSleep(50);
	retryAttempt++;
	continue;
      }
      ERR(err);
      closeTransaction(pNdb);
      return NDBT_FAILED;
    }
        
    int eof;
    int rows = 0;
    while(check == 0 && (eof = pOp->nextResult()) == 0){
      rows++;

      bool null_found= false;
      for(int a = 0; a<(int)pIndex->getNoOfColumns(); a++){
	const NdbDictionary::Column *  col = pIndex->getColumn(a);
	if (scanRow.attributeStore(col->getName())->isNULL())
	{
	  null_found= true;
	  break;
	}
      }
      
      // Do pk lookup
      NdbOperation * pk = pTrans->getNdbOperation(tab.getName());
//.........这里部分代码省略.........