116 lines
3.7 KiB
C++
116 lines
3.7 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_PL_EXPR_SUBQUERY_H_
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#define OCEANBASE_SQL_OB_PL_EXPR_SUBQUERY_H_
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#include "common/object/ob_object.h"
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#include "sql/engine/expr/ob_expr_operator.h"
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#include "pl/ob_pl_type.h"
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#include "sql/engine/expr/ob_i_expr_extra_info.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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struct ObExprPlSubQueryInfo : public ObIExprExtraInfo
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{
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OB_UNIS_VERSION(1);
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public:
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ObExprPlSubQueryInfo(common::ObIAllocator &alloc, ObExprOperatorType type)
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: ObIExprExtraInfo(alloc, type),
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id_(common::OB_INVALID_ID),
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ps_sql_(ObString()),
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type_(stmt::T_NONE),
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route_sql_(ObString()),
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result_type_(),
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is_ignore_fail_(false) {}
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virtual int deep_copy(common::ObIAllocator &allocator,
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const ObExprOperatorType type,
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ObIExprExtraInfo *&copied_info) const override;
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template <typename RE>
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int from_raw_expr(RE &expr, ObIAllocator &alloc);
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ObPsStmtId id_; //prepare的语句id, 保留id，兼容老版本
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common::ObString ps_sql_;
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stmt::StmtType type_; //prepare的语句类型
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common::ObString route_sql_;
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sql::ObExprResType result_type_;
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bool is_ignore_fail_;
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};
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class ObExprOpSubQueryInPl : public ObFuncExprOperator
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{
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OB_UNIS_VERSION(1);
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public:
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explicit ObExprOpSubQueryInPl(common::ObIAllocator &alloc);
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virtual ~ObExprOpSubQueryInPl();
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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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virtual inline void reset() {
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route_sql_.reset();
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ObFuncExprOperator::reset();
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}
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virtual int assign(const ObExprOperator &other);
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int deep_copy_route_sql(const common::ObString &v)
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{
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return ob_write_string(allocator_, v, route_sql_);
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}
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int deep_copy_ps_sql(const common::ObString &v)
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{
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return ob_write_string(allocator_, v, ps_sql_);
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}
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inline void set_ps_sql(common::ObString sql) { ps_sql_ = sql; }
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inline void set_stmt_type(stmt::StmtType type) { type_ = type; }
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inline void set_route_sql(common::ObString sql) { route_sql_ = sql; }
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inline void set_result_type(ObExprResType type) { result_type_ = type; }
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inline void set_ignore_fail() { is_ignore_fail_ = true; }
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virtual int cg_expr(ObExprCGCtx &op_cg_ctx,
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const ObRawExpr &raw_expr, ObExpr &rt_expr) const override;
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static int eval_subquery(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &expr_datum);
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private:
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static int fill_obj_stack(const ObExpr &expr, ObEvalCtx &ctx, common::ObObj *objs);
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static int fill_param_store(const ObObj *objs_stack, int64_t param_num, ParamStore& params);
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static int fetch_row(void *result_ret, int64_t &row_count, ObNewRow &cur_row);
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static int get_result(void *result_set, ObObj &result, ObIAllocator &alloc);
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ObPsStmtId id_; //prepare的语句id
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common::ObString ps_sql_;
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stmt::StmtType type_; //prepare的语句类型
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common::ObString route_sql_;
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ObExprResType result_type_;
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bool is_ignore_fail_;
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common::ObIAllocator &allocator_;
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private:
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DISALLOW_COPY_AND_ASSIGN(ObExprOpSubQueryInPl);
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};
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} //sql
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} //oceanbase
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#endif //OCEANBASE_SQL_OB_PL_EXPR_SUBQUERY_H_
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