59 lines
2.5 KiB
C++
59 lines
2.5 KiB
C++
/**
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* Copyright (c) 2021 OceanBase
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* OceanBase CE is licensed under Mulan PubL v2.
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* You can use this software according to the terms and conditions of the Mulan PubL v2.
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* You may obtain a copy of Mulan PubL v2 at:
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* http://license.coscl.org.cn/MulanPubL-2.0
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PubL v2 for more details.
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*/
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#ifndef OCEANBASE_SQL_OB_EXPR_CONVERT_TZ_H_
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#define OCEANBASE_SQL_OB_EXPR_CONVERT_TZ_H_
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#include "sql/engine/expr/ob_expr_operator.h"
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namespace oceanbase
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{
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namespace sql
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{
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class ObExprConvertTZ : public ObFuncExprOperator{
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public:
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explicit ObExprConvertTZ(common::ObIAllocator &alloc);
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virtual ~ObExprConvertTZ(){}
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virtual int calc_result_type3(ObExprResType &type,
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ObExprResType &input1,
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ObExprResType &input2,
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ObExprResType &input3,
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common::ObExprTypeCtx &type_ctx)const;
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virtual int calc_result3(common::ObObj &result,
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const common::ObObj &input1,
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const common::ObObj &input2,
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const common::ObObj &input3,
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common::ObExprCtx &expr_ctx) const;
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virtual int cg_expr(ObExprCGCtx &expr_cg_ctx, const ObRawExpr &raw_expr,
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ObExpr &expr) const override;
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static int eval_convert_tz(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &res);
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static int find_time_zone_pos(const ObString &tz_name,
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const ObTimeZoneInfo &tz_info,
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ObTimeZoneInfoPos *&tz_info_pos);
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template <typename T>
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static int calc_convert_tz(int64_t timestamp_data, const ObString &tz_str_s,//source time zone (input2)
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const ObString &tz_str_d,//destination time zone (input3)
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ObSQLSessionInfo *session,
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T &result);
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static int calc(int64_t ×tamp_data, const ObTimeZoneInfoPos &tz_info_pos,
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const bool input_utc_time);
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static int parse_string(int64_t ×tamp_data, const ObString &tz_str,
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ObSQLSessionInfo *session, const bool input_utc_time);
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private:
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// disallow copy
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DISALLOW_COPY_AND_ASSIGN(ObExprConvertTZ);
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};
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} //sql
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} //oceanbasel
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#endif //OCEANBASE_SQL_OB_EXPR_CONVERT_TZ_H_
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