C++ (Cpp) NdbOperation::load_const_u64 Beispiele

Beispiel #1

int runTestBug19537(NDBT_Context* ctx, NDBT_Step* step){
  const NdbDictionary::Table * pTab = ctx->getTab();
  Ndb* pNdb = GETNDB(step);

  if (strcmp(pTab->getName(), "T1") != 0) {
    g_err << "runTestBug19537: skip, table != T1" << endl;
    return NDBT_OK;
  }


  NdbConnection* pTrans = pNdb->startTransaction();
  if (pTrans == NULL){
    ERR(pNdb->getNdbError());
    return NDBT_FAILED;
  }
  
  NdbOperation* pOp = pTrans->getNdbOperation(pTab->getName());
  if (pOp == NULL) {
    ERR(pTrans->getNdbError());
    pNdb->closeTransaction(pTrans);
    return NDBT_FAILED;
  }
  
  if (pOp->interpretedUpdateTuple() == -1) {
    ERR(pOp->getNdbError());
    pNdb->closeTransaction(pTrans);
    return NDBT_FAILED;
  }
  
  
  // Primary keys
  const Uint32 pkVal = 1;
  if (pOp->equal("KOL1", pkVal) == -1) {
    ERR(pTrans->getNdbError());
    pNdb->closeTransaction(pTrans);
    return NDBT_FAILED;
  }
  
  // Load 64-bit constant into register 1 and
  // write from register 1 to 32-bit column KOL2
  const Uint64 reg_val = 0x0102030405060708ULL;
#if 0
  Uint32 reg_ptr32[2];
  memcpy(&(reg_ptr32[0]), (Uint8*)&reg_val, sizeof(Uint32));
  memcpy(&(reg_ptr32[1]), ((Uint8*)&reg_val)+4, sizeof(Uint32));
  if (reg_ptr32[0] == 0x05060708 && reg_ptr32[1] == 0x01020304) {
    g_err << "runTestBug19537: platform is LITTLE endian" << endl;
  } else if (reg_ptr32[0] == 0x01020304 && reg_ptr32[1] == 0x05060708) {
    g_err << "runTestBug19537: platform is BIG endian" << endl;
  } else {
    g_err << "runTestBug19537: impossible platform"
          << hex << " [0]=" << reg_ptr32[0] << " [1]=" <<reg_ptr32[1] << endl;
    pNdb->closeTransaction(pTrans);
    return NDBT_FAILED;
  }
#endif

  if (pOp->load_const_u64(1, reg_val) == -1 ||
      pOp->write_attr("KOL2", 1) == -1) {
    ERR(pOp->getNdbError());
    pNdb->closeTransaction(pTrans);
    return NDBT_FAILED;
  }

  if (pTrans->execute(Commit) == -1) {
    ERR(pTrans->getNdbError());
    pNdb->closeTransaction(pTrans);
    return NDBT_FAILED;
  }

  // Read value via a new transaction

  pTrans = pNdb->startTransaction();
  if (pTrans == NULL){
    ERR(pNdb->getNdbError());
    return NDBT_FAILED;
  }
  
  pOp = pTrans->getNdbOperation(pTab->getName());
  if (pOp == NULL) {
    ERR(pTrans->getNdbError());
    pNdb->closeTransaction(pTrans);
    return NDBT_FAILED;
  }
  
  Uint32 kol2 = 0x09090909;
  if (pOp->readTuple() == -1 ||
      pOp->equal("KOL1", pkVal) == -1 ||
      pOp->getValue("KOL2", (char*)&kol2) == 0) {
    ERR(pOp->getNdbError());
    pNdb->closeTransaction(pTrans);
    return NDBT_FAILED;
  }

  if (pTrans->execute(Commit) == -1) {
    ERR(pTrans->getNdbError());
    pNdb->closeTransaction(pTrans);
    return NDBT_FAILED;
  }

  // Expected conversion as in C - truncate to lower (logical) word

  if (kol2 == 0x01020304) {
    g_err << "runTestBug19537: the bug manifests itself !" << endl;
    pNdb->closeTransaction(pTrans);
    return NDBT_FAILED;
  }

  if (kol2 != 0x05060708) {
    g_err << "runTestBug19537: impossible KOL2 " << hex << kol2 << endl;
    pNdb->closeTransaction(pTrans);
    return NDBT_FAILED;
  }

  pNdb->closeTransaction(pTrans);
  return NDBT_OK;
}