int obj_cast(const ObObj &orig_cell, const ObObj &expected_type,
ObObj &casted_cell, const ObObj *&res_cell)
{
int ret = OB_SUCCESS;
if (orig_cell.get_type() != expected_type.get_type())
{
// type cast
ObObjCastParams params;
ObExprObj from;
ObExprObj to;
from.assign(orig_cell);
to.assign(casted_cell);
if (OB_SUCCESS != (ret = OB_OBJ_CAST[orig_cell.get_type()][expected_type.get_type()](params, from, to)))
{
jlog(WARNING, "failed to type cast obj, err=%d", ret);
}
else if (OB_SUCCESS != (ret = to.to(casted_cell)))
{
jlog(WARNING, "failed to convert expr_obj to obj, err=%d", ret);
}
else
{
res_cell = &casted_cell;
}
}
else
{
res_cell = &orig_cell;
}
return ret;
}
int obj_cast(ObObj &cell, const ObObjType expected_type, char* buf, int64_t buf_size, int64_t &used_buf_len)
{
int ret = OB_SUCCESS;
used_buf_len = 0;
if (cell.get_type() != expected_type)
{
ObObjCastParams params;
ObExprObj from;
ObExprObj to;
from.assign(cell);
if (ObVarcharType == expected_type)
{
string buffer;
buffer.assign(buf, static_cast<int32_t> (buf_size));
ObObj varchar_cell;
varchar_cell.set_varchar(buffer);
to.assign(varchar_cell);
}
if (OB_SUCCESS != (ret = OB_OBJ_CAST[cell.get_type()][expected_type](params, from, to)))
{
jlog(WARNING, "failed to type cast obj, err=%d", ret);
}
else if (OB_SUCCESS != (ret = to.to(cell)))
{
jlog(WARNING, "failed to convert expr_obj to obj, err=%d", ret);
}
else
{
if (ObVarcharType == expected_type)
{
string varchar;
cell.get_varchar(varchar);
used_buf_len = varchar.length(); // used buffer length for casting to varchar type
}
}
}
return ret;
}
ObExprObj ObExprObjTest::bool_obj(MyBool t1)
{
ObExprObj ret;
ObObj obj;
switch(t1)
{
case MY_TRUE:
obj.set_bool(true);
break;
case MY_FALSE:
obj.set_bool(false);
break;
default:
obj.set_null();
break;
}
ret.assign(obj);
return ret;
}
