本文整理汇总了C++中NdbOperation::write_attr方法的典型用法代码示例。如果您正苦于以下问题:C++ NdbOperation::write_attr方法的具体用法?C++ NdbOperation::write_attr怎么用?C++ NdbOperation::write_attr使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类NdbOperation
的用法示例。
在下文中一共展示了NdbOperation::write_attr方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: runTestBug19537
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*)®_val, sizeof(Uint32));
memcpy(&(reg_ptr32[1]), ((Uint8*)®_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;
}
//.........这里部分代码省略.........