71 lines
2.5 KiB
C++
71 lines
2.5 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.
|
|
*/
|
|
|
|
#ifndef ENGINE_EXPR_OB_EXPR_FROM_UNIX_TIME_H_
|
|
#define ENGINE_EXPR_OB_EXPR_FROM_UNIX_TIME_H_
|
|
|
|
#include "lib/ob_name_def.h"
|
|
#include "share/object/ob_obj_cast.h"
|
|
#include "sql/engine/expr/ob_expr_operator.h"
|
|
|
|
namespace oceanbase
|
|
{
|
|
namespace sql
|
|
{
|
|
class ObExprFromUnixTime : public ObFuncExprOperator
|
|
{
|
|
public:
|
|
explicit ObExprFromUnixTime(common::ObIAllocator &alloc);
|
|
virtual ~ObExprFromUnixTime();
|
|
virtual int calc_result_typeN(ObExprResType &type,
|
|
ObExprResType *params,
|
|
int64_t params_count,
|
|
common::ObExprTypeCtx &type_ctx) const;
|
|
virtual int cg_expr(ObExprCGCtx &op_cg_ctx,
|
|
const ObRawExpr &raw_expr,
|
|
ObExpr &rt_expr) const override;
|
|
|
|
static int eval_one_temporal_fromtime(const ObExpr &expr,
|
|
ObEvalCtx &eval_ctx,
|
|
ObDatum &expr_datum);
|
|
|
|
static int eval_one_param_fromtime(const ObExpr &expr,
|
|
ObEvalCtx &eval_ctx,
|
|
ObDatum &expr_datum);
|
|
|
|
static int eval_fromtime_normal(const ObExpr &expr,
|
|
ObEvalCtx &eval_ctx,
|
|
ObDatum &expr_datum);
|
|
|
|
static int eval_fromtime_special(const ObExpr &expr,
|
|
ObEvalCtx &eval_ctx,
|
|
ObDatum &expr_datum);
|
|
private:
|
|
int set_scale_for_single_param(ObExprResType &type,
|
|
const ObExprResType &type1) const;
|
|
|
|
common::ObObjType calc_one_param_type(ObExprResType *params) const;
|
|
|
|
static int get_usec_from_datum(const common::ObDatum ¶m_datum,
|
|
common::ObIAllocator &alloc,
|
|
int64_t &value);
|
|
|
|
// static int eval_two_
|
|
// disallow copy
|
|
DISALLOW_COPY_AND_ASSIGN(ObExprFromUnixTime);
|
|
};
|
|
|
|
}
|
|
}
|
|
|
|
#endif /* ENGINE_EXPR_OB_EXPR_FROM_UNIX_TIME_H_ */
|