本文整理汇总了C++中ObExprObj::is_null方法的典型用法代码示例。如果您正苦于以下问题：C++ ObExprObj::is_null方法的具体用法？C++ ObExprObj::is_null怎么用？C++ ObExprObj::is_null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::is_null方法的3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, null_to_xxx)
{
ObExprObj in;
in.set_null();
ObExprObj out;
ObObjCastParams params;
for (ObObjType t2 = static_cast<ObObjType>(ObMinType+1);
t2 < ObMaxType;
t2 = static_cast<ObObjType>(t2 + 1))
{
ASSERT_EQ(OB_SUCCESS, OB_OBJ_CAST[ObNullType][t2](params, in, out));
ASSERT_TRUE(out.is_null());
}
}示例2: test_not
void ObExprObjTest::test_not(MyBool t1, MyBool res)
{
ObExprObj v1 = bool_obj(t1);
ObExprObj vres;
ASSERT_EQ(OB_SUCCESS, v1.lnot(vres));
switch(res)
{
case MY_TRUE:
ASSERT_TRUE(vres.is_true());
break;
case MY_FALSE:
ASSERT_TRUE(vres.is_false());
break;
default:
ASSERT_TRUE(vres.is_null());
break;
}
}示例3:
BLOCK_FUNC()
{
ObExprObj t1;
ObExprObj t2;
ObExprObj res;
int64_t i1 = 0;
int64_t i2 = 0;
const int64_t buf_len = ObNumber::MAX_PRINTABLE_SIZE;
char res_buf[buf_len];
int err = OB_SUCCESS;
// int add int
t1.set_int(1);
t2.set_int(2);
EXPECT_EQ(OB_SUCCESS, t1.add(t2, res));
ASSERT_EQ(OB_SUCCESS, res.get_int(i2));
ASSERT_EQ(3, i2);
// int add dec
t1.set_int(1);
t2.set_decimal("2.2");
EXPECT_EQ(OB_SUCCESS, t1.add(t2, res));
ASSERT_EQ(OB_SUCCESS, res.get_decimal(res_buf, buf_len));
ASSERT_STREQ("3.2", res_buf);
// dec add dec
t1.set_decimal("10");
t2.set_decimal("2.2");
EXPECT_EQ(OB_SUCCESS, t1.add(t2, res));
ASSERT_EQ(OB_SUCCESS, res.get_decimal(res_buf, buf_len));
ASSERT_STREQ("12.2", res_buf);
// int sub int
t1.set_int(4);
t2.set_int(2);
EXPECT_EQ(OB_SUCCESS, t1.sub(t2, res));
ASSERT_EQ(OB_SUCCESS, res.get_int(i2));
ASSERT_EQ(2, i2);
// int sub dec
t1.set_int(4);
t2.set_decimal("3.0");
EXPECT_EQ(OB_SUCCESS, t1.sub(t2, res));
EXPECT_EQ(OB_SUCCESS, t1.sub(t2, res));
ASSERT_EQ(OB_SUCCESS, res.get_decimal(res_buf, buf_len));
ASSERT_STREQ("1.0", res_buf);
// dec sub dec
t1.set_decimal("4");
t2.set_decimal("2.0");
EXPECT_EQ(OB_SUCCESS, t1.sub(t2, res));
ASSERT_EQ(OB_SUCCESS, res.get_decimal(res_buf, buf_len));
ASSERT_STREQ("2.0", res_buf);
// int mul int
t1.set_int(4);
t2.set_int(2);
EXPECT_EQ(OB_SUCCESS, t1.mul(t2, res));
ASSERT_EQ(OB_SUCCESS, res.get_int(i2));
ASSERT_EQ(8, i2);
// int mul dec
t1.set_int(4);
t2.set_decimal("2.0");
EXPECT_EQ(OB_SUCCESS, t1.mul(t2, res));
ASSERT_EQ(OB_SUCCESS, res.get_decimal(res_buf, buf_len));
ASSERT_STREQ("8.0", res_buf);
// dec mul dec
t1.set_decimal("4");
t2.set_decimal("2.0");
EXPECT_EQ(OB_SUCCESS, t1.mul(t2, res));
ASSERT_EQ(OB_SUCCESS, res.get_decimal(res_buf, buf_len));
ASSERT_STREQ("8.0", res_buf);
// int div int
t1.set_int(6);
t2.set_int(2);
EXPECT_EQ(OB_SUCCESS, t1.div(t2, res, false));
ASSERT_EQ(OB_SUCCESS, res.get_decimal(res_buf, buf_len));
ASSERT_STREQ("3.00000000000000000000000000000000000000", res_buf);
EXPECT_EQ(OB_SUCCESS, t1.div(t2, res, true));
double d = 0.0;
ASSERT_EQ(OB_SUCCESS, res.get_double(d));
ASSERT_EQ(3.0, d);
// int div dec
t1.set_int(6);
t2.set_decimal("2.0");
EXPECT_EQ(OB_SUCCESS, t1.div(t2, res, false));
ASSERT_EQ(OB_SUCCESS, res.get_decimal(res_buf, buf_len));
ASSERT_STREQ("3.00000000000000000000000000000000000000", res_buf);
// dec div dec
t1.set_decimal("6");
t2.set_decimal("2.0");
EXPECT_EQ(OB_SUCCESS, t1.div(t2, res, false));
ASSERT_EQ(OB_SUCCESS, res.get_decimal(res_buf, buf_len));
ASSERT_STREQ("3.00000000000000000000000000000000000000", res_buf);
t1.set_int(5);
t2.set_int(0);
EXPECT_TRUE(OB_SUCCESS != t1.div(t2, res, false));
EXPECT_TRUE(true == res.is_null());
t1.set_decimal("5.0");
t2.set_int(0);
EXPECT_TRUE(OB_SUCCESS != t1.div(t2, res, false));
//.........这里部分代码省略.........