109 lines
3.1 KiB
C++
109 lines
3.1 KiB
C++
/**
|
|
* Copyright (c) 2021 OceanBase
|
|
* OceanBase CE is licensed under Mulan PubL v2.
|
|
* You can use this software according to the terms and conditions of the Mulan PubL v2.
|
|
* You may obtain a copy of Mulan PubL v2 at:
|
|
* http://license.coscl.org.cn/MulanPubL-2.0
|
|
* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
|
|
* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
|
|
* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
|
|
* See the Mulan PubL v2 for more details.
|
|
*/
|
|
|
|
#define USING_LOG_PREFIX SQL_ENG
|
|
#include "lib/ob_name_def.h"
|
|
#include "sql/engine/expr/ob_expr_makedate.h"
|
|
#include "sql/engine/ob_exec_context.h"
|
|
|
|
namespace oceanbase
|
|
{
|
|
using namespace common;
|
|
namespace sql
|
|
{
|
|
|
|
ObExprMakedate::ObExprMakedate(ObIAllocator &alloc)
|
|
: ObFuncExprOperator(alloc, T_FUN_SYS_MAKEDATE, N_MAKEDATE, 2, VALID_FOR_GENERATED_COL, NOT_ROW_DIMENSION)
|
|
{
|
|
}
|
|
|
|
ObExprMakedate::~ObExprMakedate()
|
|
{
|
|
}
|
|
|
|
int ObExprMakedate::calc_result_type2(ObExprResType &type,
|
|
ObExprResType &year,
|
|
ObExprResType &day,
|
|
common::ObExprTypeCtx &type_ctx) const
|
|
{
|
|
type_ctx.set_cast_mode(type_ctx.get_cast_mode() | CM_STRING_INTEGER_TRUNC);
|
|
int ret = common::OB_SUCCESS;
|
|
type.set_type(ObDateType);
|
|
year.set_calc_type(ObIntType);
|
|
day.set_calc_type(ObIntType);
|
|
return ret;
|
|
}
|
|
|
|
int ObExprMakedate::cg_expr(ObExprCGCtx &op_cg_ctx,
|
|
const ObRawExpr &raw_expr,
|
|
ObExpr &rt_expr) const
|
|
{
|
|
UNUSED(op_cg_ctx);
|
|
UNUSED(raw_expr);
|
|
int ret = OB_SUCCESS;
|
|
if (rt_expr.arg_cnt_ != 2) {
|
|
ret = OB_INVALID_ARGUMENT;
|
|
LOG_WARN("makedate expr should have two params", K(ret), K(rt_expr.arg_cnt_));
|
|
} else if (OB_ISNULL(rt_expr.args_) || OB_ISNULL(rt_expr.args_[0])
|
|
|| OB_ISNULL(rt_expr.args_[1])) {
|
|
ret = OB_ERR_UNEXPECTED;
|
|
LOG_WARN("children of makedate expr is null", K(ret), K(rt_expr.args_));
|
|
} else {
|
|
rt_expr.eval_func_ = ObExprMakedate::calc_makedate;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int ObExprMakedate::calc_makedate(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &expr_datum)
|
|
{
|
|
int ret = OB_SUCCESS;
|
|
ObDatum *year = NULL;
|
|
ObDatum *day = NULL;
|
|
if (OB_FAIL(expr.eval_param_value(ctx, year, day))) {
|
|
LOG_WARN("calc param failed", K(ret));
|
|
} else if (year->is_null() || day->is_null()) {
|
|
expr_datum.set_null();
|
|
} else if (OB_FAIL(calc(expr_datum, year->get_int(), day->get_int()))) {
|
|
LOG_WARN("calc make date failed", K(ret));
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
template <typename T>
|
|
int ObExprMakedate::calc(T &res, int64_t year, int64_t day)
|
|
{
|
|
int ret = OB_SUCCESS;
|
|
if (year < 0 || year > 9999 || day <= 0 || day > DATE_MAX_VAL) {
|
|
res.set_null();
|
|
} else {
|
|
if (year < 70) {
|
|
year += 2000;
|
|
} else if (year < 100) {
|
|
year += 1900;
|
|
}
|
|
ObTime ot;
|
|
ot.parts_[DT_YEAR] = year;
|
|
ot.parts_[DT_MON] = 1;
|
|
ot.parts_[DT_MDAY] = 1;
|
|
int32_t date_value = ObTimeConverter::ob_time_to_date(ot);
|
|
if (date_value - 1 + day > DATE_MAX_VAL) {
|
|
res.set_null();
|
|
} else {
|
|
res.set_date(date_value - 1 + day);
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
}
|
|
}
|