73 lines
2.9 KiB
C++
73 lines
2.9 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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* This file contains declare of the json_object.
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*/
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#ifndef OCEANBASE_SQL_OB_EXPR_JSON_OBJECT_H_
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#define OCEANBASE_SQL_OB_EXPR_JSON_OBJECT_H_
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#include "sql/engine/expr/ob_expr_operator.h"
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#include "sql/resolver/dml/ob_select_resolver.h"
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using namespace oceanbase::common;
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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 ObExprJsonObject : public ObFuncExprOperator
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{
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public:
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explicit ObExprJsonObject(common::ObIAllocator &alloc);
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virtual ~ObExprJsonObject();
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virtual int calc_result_typeN(ObExprResType& type, ObExprResType* types, int64_t param_num,
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common::ObExprTypeCtx& type_ctx) const override;
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static int eval_json_object(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &res);
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static int eval_ora_json_object(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &res);
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virtual int cg_expr(ObExprCGCtx &expr_cg_ctx, const ObRawExpr &raw_expr, ObExpr &rt_expr) const override;
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static int set_result(ObObjType dst_type, ObString str_res, common::ObIAllocator *allocator,
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ObEvalCtx &ctx, const ObExpr &expr, ObDatum &res, uint8_t strict_type,
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uint8_t unique_type);
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static int check_key_valid(common::hash::ObHashSet<ObString> &view_key_names, const ObString &key_name);
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private:
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/* process null */
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const static int64_t OB_JSON_ON_NULL_NUM = 3;
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const static uint8_t OB_JSON_ON_NULL_NULL = 1;
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const static uint8_t OB_JSON_ON_NULL_ABSENT = 2;
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const static uint8_t OB_JSON_ON_NULL_IMPLICIT = 0;
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/* process format strict */
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const static int64_t OB_JSON_ON_STRICT_NUM = 2;
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const static uint8_t OB_JSON_ON_STRICT_USE = 1;
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const static uint8_t OB_JSON_ON_STRICT_IMPLICIT = 0;
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/* process unique */
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const static int64_t OB_JSON_ON_UNIQUE_NUM = 2;
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const static uint8_t OB_JSON_ON_UNIQUE_USE = 1;
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const static uint8_t OB_JSON_ON_UNIQUE_IMPLICIT = 0;
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static int eval_option_clause_value(ObExpr *expr,
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ObEvalCtx &ctx,
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uint8_t &type,
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int64_t size_para);
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static int get_ora_json_doc(const ObExpr &expr, ObEvalCtx &ctx,
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uint16_t index, ObDatum*& j_datum,
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bool &is_null);
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private:
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DISALLOW_COPY_AND_ASSIGN(ObExprJsonObject);
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};
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} //sql
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} //oceanbase
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#endif //OCEANBASE_SQL_OB_EXPR_JSON_OBJECT_H_
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