本文整理汇总了C++中ObExprObj::set_decimal方法的典型用法代码示例。如果您正苦于以下问题：C++ ObExprObj::set_decimal方法的具体用法？C++ ObExprObj::set_decimal怎么用？C++ ObExprObj::set_decimal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ObExprObj的用法示例。
在下文中一共展示了ObExprObj::set_decimal方法的5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:
TEST_F(ObObjCastTest, decimal_to_xxx)
{
ObExprObj in;
const char * cases_str[] = {"0", "123.456", "-789.012"};
ObNumber cases[ARRAYSIZEOF(cases_str)];
int64_t int_expected[ARRAYSIZEOF(cases)] = {0, 123, -789};
float float_expected[ARRAYSIZEOF(cases)] = {0.0f, 123.456f, -789.012f};
double double_expected[ARRAYSIZEOF(cases)] = {0.0, 123.456, -789.012};
for (int64_t i = 0; i < static_cast<int64_t>(ARRAYSIZEOF(cases)); ++i)
{
//printf("case %ld: %s\n", i, cases_str[i]);
cases[i].from(cases_str[i]);
in.set_decimal(cases[i]);
int64_t v = int_expected[i];
MY_EXPECT(ObDecimalType, in, ObNullType, v, cases_str[i]);
MY_EXPECT(ObDecimalType, in, ObIntType, v, cases_str[i]);
MY_EXPECT(ObDecimalType, in, ObFloatType, float_expected[i], cases_str[i]);
MY_EXPECT(ObDecimalType, in, ObDoubleType, double_expected[i], cases_str[i]);
MY_EXPECT(ObDecimalType, in, ObDateTimeType, v, cases_str[i]);
MY_EXPECT(ObDecimalType, in, ObPreciseDateTimeType, v, cases_str[i]);
MY_EXPECT(ObDecimalType, in, ObVarcharType, v, cases_str[i]);
MY_EXPECT(ObDecimalType, in, ObSeqType, v, cases_str[i]);
MY_EXPECT(ObDecimalType, in, ObCreateTimeType, v, cases_str[i]);
MY_EXPECT(ObDecimalType, in, ObModifyTimeType, v, cases_str[i]);
MY_EXPECT(ObDecimalType, in, ObExtendType, v, cases_str[i]);
MY_EXPECT(ObDecimalType, in, ObBoolType, v, cases_str[i]);
MY_EXPECT(ObDecimalType, in, ObDecimalType, v, cases_str[i]);
}
}示例2: mtime_decimal
static int mtime_decimal(const ObObjCastParams ¶ms, const ObExprObj &in, ObExprObj &out)
{
UNUSED(params);
OB_ASSERT(in.get_type() == ObModifyTimeType);
ObNumber num;
num.from(static_cast<int64_t> (in.get_mtime()));
out.set_decimal(num);
return OB_SUCCESS;
}示例3: int_decimal
static int int_decimal(const ObObjCastParams ¶ms, const ObExprObj &in, ObExprObj &out)
{
UNUSED(params);
OB_ASSERT(in.get_type() == ObIntType);
ObNumber num;
num.from(in.get_int());
out.set_decimal(num); // @todo optimize
return OB_SUCCESS;
}示例4: varchar_decimal
static int varchar_decimal(const ObObjCastParams ¶ms, const ObExprObj &in, ObExprObj &out)
{
int ret = OB_SUCCESS;
UNUSED(params);
OB_ASSERT(in.get_type() == ObVarcharType);
const string &varchar = in.get_varchar();
ObNumber num;
if (OB_SUCCESS != (ret = num.from(varchar.data(), varchar.length())))
{
jlog(WARNING, "failed to convert varchar to decimal, err=%d varchar=%.*s",
ret, varchar.length(), varchar.data());
}
else
{
out.set_decimal(num); // @todo optimize
}
return OB_SUCCESS;
}示例5: double_decimal
static int double_decimal(const ObObjCastParams ¶ms, const ObExprObj &in, ObExprObj &out)
{
int ret = OB_SUCCESS;
UNUSED(params);
OB_ASSERT(in.get_type() == ObDoubleType);
static const int64_t MAX_DOUBLE_PRINT_SIZE = 64;
char buf[MAX_DOUBLE_PRINT_SIZE];
snprintf(buf, MAX_DOUBLE_PRINT_SIZE, "%f", in.get_double());
ObNumber num;
if (OB_SUCCESS != (ret = num.from(buf)))
{
jlog(WARNING, "failed to convert float to decimal, err=%d", ret);
}
else
{
out.set_decimal(num);
}
return ret;
}