70 lines
2.3 KiB
C++
70 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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* This file is for func xmlparse.
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*/
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#ifndef OCEANBASE_SRC_SQL_ENGINE_EXPR_OB_EXPR_XMLPARSE_H
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#define OCEANBASE_SRC_SQL_ENGINE_EXPR_OB_EXPR_XMLPARSE_H
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#include "sql/engine/expr/ob_expr_operator.h"
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#include "sql/engine/expr/ob_expr_lob_utils.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 ObExprXmlparse : public ObFuncExprOperator
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{
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public:
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explicit ObExprXmlparse(common::ObIAllocator &alloc);
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virtual ~ObExprXmlparse();
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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)
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const override;
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static int eval_xmlparse(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &res) { return OB_NOT_SUPPORTED; }
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virtual int cg_expr(ObExprCGCtx &expr_cg_ctx,
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const ObRawExpr &raw_expr,
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ObExpr &rt_expr)
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const override;
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private:
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/* process xml_doc_type */
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const static uint8_t OB_XML_DOC_TYPE_COUNT = 3;
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const static uint8_t OB_XML_DOCUMENT = 0;
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const static uint8_t OB_XML_CONTENT = 1;
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const static uint8_t OB_XML_DOC_TYPE_IMPLICIT = 2;
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/* process xml wellformed */
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const static uint8_t OB_WELLFORMED_COUNT = 3;
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const static uint8_t OB_XML_WELLFORMED = 0;
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const static uint8_t OB_XML_NOT_WELLFORMED = 1;
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const static uint8_t OB_WELLFORMED_IMPLICIT = 2;
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static int get_clause_opt(const ObExpr &expr,
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ObEvalCtx &ctx,
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uint8_t index,
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uint8_t &type,
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uint8_t size_para);
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private:
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DISALLOW_COPY_AND_ASSIGN(ObExprXmlparse);
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};
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} // sql
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} // oceanbase
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#endif // OCEANBASE_SRC_SQL_ENGINE_EXPR_OB_EXPR_XMLPARSE_H
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