73 lines
2.8 KiB
C++
73 lines
2.8 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_EXTRACT_H_
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#define OCEANBASE_SQL_OB_EXPR_EXTRACT_H_
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#include "share/object/ob_obj_cast.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 ObPhysicalPlanCtx;
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class ObExprExtract : public ObFuncExprOperator
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{
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public:
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explicit ObExprExtract(common::ObIAllocator &alloc);
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virtual ~ObExprExtract();
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virtual int calc_result_type2(ObExprResType &type,
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ObExprResType &date_unit,
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ObExprResType &date,
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common::ObExprTypeCtx &type_ctx) const;
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template <typename T>
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static int calc(T &result,
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const int64_t date_unit,
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const T &date,
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common::ObObjType date_type,
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const common::ObCastMode cast_mode,
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const common::ObTimeZoneInfo *tz_info,
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const int64_t cur_ts_value,
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const ObDateSqlMode date_sql_mode,
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bool has_lob_header);
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template <typename T>
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static int calc_oracle(T &result,
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const int64_t date_unit,
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const T &date,
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common::ObObjType type,
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const ObSQLSessionInfo *session,
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common::ObIAllocator *calc_buf);
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virtual int cg_expr(ObExprCGCtx &op_cg_ctx,
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const ObRawExpr &raw_expr,
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ObExpr &rt_expr) const override;
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static int calc_extract_oracle(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &expr_datum);
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static int calc_extract_mysql(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &expr_datum);
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// for static engine batch
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static int calc_extract_oracle_batch(
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const ObExpr &expr, ObEvalCtx &ctx, const ObBitVector &skip, const int64_t batch_size);
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static int calc_extract_mysql_batch(
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const ObExpr &expr, ObEvalCtx &ctx, const ObBitVector &skip, const int64_t batch_size);
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private:
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int set_result_type_oracle(common::ObExprTypeCtx &type_ctx,
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const ObExprResType &date_unit,
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ObExprResType &res_type) const;
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// disallow copy
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DISALLOW_COPY_AND_ASSIGN(ObExprExtract);
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};
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} //sql
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} //oceanbase
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#endif //OCEANBASE_SQL_OB_EXPR_EXTRACT_H_
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