9b31f8aa03
Co-authored-by: nroskill <nroskill@gmail.com> Co-authored-by: akaError <lzg020616@163.com> Co-authored-by: yinyj17 <yinyijun92@gmail.com>
78 lines
3.1 KiB
C++
78 lines
3.1 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 implementation for xmlelement.
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*/
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#ifndef OCEANBASE_SQL_OB_EXPR_XML_ELEMENT_H_
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#define OCEANBASE_SQL_OB_EXPR_XML_ELEMENT_H_
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#include "sql/engine/expr/ob_expr_operator.h"
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#include "lib/json_type/ob_json_base.h" // for ObIJsonBase may need json for kv pairs
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#include "lib/json_type/ob_json_bin.h" // for ObJsonBin
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#include "sql/engine/expr/ob_expr_lob_utils.h"
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#include "lib/container/ob_vector.h"
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#ifdef OB_BUILD_ORACLE_XML
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#include "lib/xml/ob_xml_util.h"
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#endif
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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
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ObExprXmlElement : public ObFuncExprOperator
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{
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public:
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explicit ObExprXmlElement(common::ObIAllocator &alloc);
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virtual ~ObExprXmlElement();
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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)
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const override;
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#ifdef OB_BUILD_ORACLE_XML
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static int eval_xml_element(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &res);
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#else
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static int eval_xml_element(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &res) { return OB_NOT_SUPPORTED; }
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#endif
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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) const override;
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private:
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#ifdef OB_BUILD_ORACLE_XML
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static int get_keys_from_wrapper(ObIJsonBase *json_doc,
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ObIAllocator *allocator,
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ObString &str);
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static int construct_element(ObMulModeMemCtx* mem_ctx,
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const ObString &name,
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ObVector<ObObj> &value_vec,
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const ObIJsonBase *attr,
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ObXmlElement *&element,
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bool &validity);
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static int construct_attribute(ObMulModeMemCtx* mem_ctx,
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const ObIJsonBase *attr,
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ObXmlElement *&element);
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static int construct_element_children(ObMulModeMemCtx* mem_ctx,
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ObVector<ObObj> &value_vec,
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ObXmlElement *&element,
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ObXmlElement *valid_ele);
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static int construct_value_array(ObIAllocator &allocator,
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const ObString &value,
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ObVector<ObObj> &res_value);
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#endif
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DISALLOW_COPY_AND_ASSIGN(ObExprXmlElement);
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};
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} // sql
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} // oceanbase
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#endif // OCEANBASE_SQL_OB_EXPR_XML_ELEMENT_H_
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