52 lines
1.8 KiB
C++
52 lines
1.8 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_OB_SQL_EXPR_CASE_H_
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#define OCEANBASE_OB_SQL_EXPR_CASE_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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#define CHECK_WHEN_EXPR_TYPE (1ULL)
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#define NEED_CHECK_WHEN_EXPR_TYPE(flag) (((flag) & CHECK_WHEN_EXPR_TYPE) != 0)
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class ObExprCase : public ObExprOperator
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{
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public:
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explicit ObExprCase(common::ObIAllocator &alloc);
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virtual ~ObExprCase();
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virtual int calc_result_typeN(ObExprResType &type,
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ObExprResType *types_stack,
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int64_t param_num,
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common::ObExprTypeCtx &type_ctx) const;
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static int calc_case_expr(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &res_datum);
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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 is_same_kind_type_for_case(const common::ObIArray<ObExprResType> &type_arr);
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static int eval_case_batch(const ObExpr &expr,
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ObEvalCtx &ctx,
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const ObBitVector &skip,
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const int64_t batch_size);
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private:
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// disallow copy
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DISALLOW_COPY_AND_ASSIGN(ObExprCase);
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};
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}
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}
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#endif // OCEANBASE_OB_SQL_EXPR_CASE_H_
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