59 lines
2.3 KiB
C++
59 lines
2.3 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 SRC_SQL_ENGINE_EXPR_OB_EXPR_WIDTH_BUCKET_H_
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#define SRC_SQL_ENGINE_EXPR_OB_EXPR_WIDTH_BUCKET_H_
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#include <cstdint>
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#include "sql/engine/expr/ob_expr_res_type.h"
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#include "objit/common/ob_item_type.h"
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#include "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 ObExprWidthBucket: public ObFuncExprOperator
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{
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public:
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explicit ObExprWidthBucket(common::ObIAllocator &alloc);
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virtual ~ObExprWidthBucket() {}
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virtual int calc_result_typeN(ObExprResType &type,
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ObExprResType *types,
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int64_t param_num,
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common::ObExprTypeCtx &type_ctx) const override;
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virtual int cg_expr(ObExprCGCtx &expr_cg_ctx, const ObRawExpr &raw_expr,
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ObExpr &rt_expr) const;
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static int calc_width_bucket_expr(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &res);
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private:
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static int calc_time_type(const int64_t time_sec1, const int64_t time_frac_sec1,
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const int64_t time_sec2, const int64_t time_frac_sec2,
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const int64_t time_sec3, const int64_t time_frac_sec3,
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const int64_t multiple, common::ObIAllocator &alloc,
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common::number::ObNumber &e_nmb, common::number::ObNumber &start_nmb,
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common::number::ObNumber &end_nmb);
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static int construct_param_nmb(const int64_t expr_value,
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const int64_t start_value,
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const int64_t end_value,
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common::ObIAllocator &alloc,
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common::number::ObNumber &expr_nmb,
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common::number::ObNumber &start_nmb,
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common::number::ObNumber &end_nmb);
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};
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}
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}
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#endif /* _OB_EXPR_WIDTH_BUCKET_H_ */
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