9b31f8aa03
Co-authored-by: nroskill <nroskill@gmail.com> Co-authored-by: akaError <lzg020616@163.com> Co-authored-by: yinyj17 <yinyijun92@gmail.com>
92 lines
4.3 KiB
C++
92 lines
4.3 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 updatexml.
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*/
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#ifndef OCEANBASE_SQL_ENGINE_EXPR_OB_EXPR_UPDATE_XML_H
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#define OCEANBASE_SQL_ENGINE_EXPR_OB_EXPR_UPDATE_XML_H
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#include "sql/engine/expr/ob_expr_operator.h"
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#ifdef OB_BUILD_ORACLE_XML
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#include "lib/xml/ob_multi_mode_interface.h"
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#include "lib/xml/ob_xml_tree.h"
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#include "lib/xml/ob_xpath.h"
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#endif
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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 ObExprUpdateXml : public ObFuncExprOperator
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{
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public:
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explicit ObExprUpdateXml(common::ObIAllocator &alloc);
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virtual ~ObExprUpdateXml();
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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) const override;
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#ifdef OB_BUILD_ORACLE_XML
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static int eval_update_xml(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &res);
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#else
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static int eval_update_xml(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)
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const override;
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#ifdef OB_BUILD_ORACLE_XML
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private:
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static int update_xml_tree(ObMulModeMemCtx* xml_mem_ctx,
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const ObExpr *expr,
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ObEvalCtx &ctx,
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ObString &xpath_str,
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ObString &default_ns,
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ObPathVarObject *prefix_ns,
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ObIMulModeBase *xml_tree);
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static int update_xml_node(ObMulModeMemCtx* xml_mem_ctx, const ObExpr *expr, ObEvalCtx &ctx, ObIMulModeBase *node);
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// for text node and attribute
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static int update_text_or_attribute_node(ObMulModeMemCtx* xml_mem_ctx,
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ObXmlNode *xml_node,
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const ObExpr *expr,
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ObEvalCtx &ctx,
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bool is_text);
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static int update_attribute_node(ObIAllocator &allocator, ObXmlNode *xml_node, const ObExpr *expr, ObEvalCtx &ctx);
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static int update_attribute_xml_node(ObXmlNode *old_node, ObXmlNode *update_node);
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// for cdata and comment
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static int update_cdata_and_comment_node(ObMulModeMemCtx* xml_mem_ctx, ObXmlNode *xml_node, const ObExpr *expr, ObEvalCtx &ctx);
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// for namespace
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static int update_namespace_node(ObMulModeMemCtx* xml_mem_ctx, ObXmlNode *xml_node, const ObExpr *expr, ObEvalCtx &ctx);
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static int update_namespace_xml_node(ObIAllocator &allocator, ObXmlNode *old_node, ObXmlNode *update_node);
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static int update_namespace_value(ObIAllocator &allocator, ObXmlNode *xml_node, const ObString &ns_value);
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static int get_valid_default_ns_from_parent(ObXmlNode *cur_node, ObXmlAttribute* &default_ns);
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static int set_ns_recrusively(ObXmlNode *update_node, ObXmlAttribute *ns);
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static int update_new_nodes_ns(ObIAllocator &allocator, ObXmlNode *parent, ObXmlNode *update_node);
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static int update_exist_nodes_ns(ObXmlElement *parent, ObXmlAttribute *prefix_ns);
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// for element
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static int update_element_node(ObMulModeMemCtx* xml_mem_ctx, ObXmlNode *xml_node, const ObExpr *expr, ObEvalCtx &ctx);
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static int clear_element_child_node(ObXmlElement *ele_node);
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static int update_xml_child_node(ObIAllocator &allocator, ObXmlNode *old_node, ObXmlNode *update_node);
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static int remove_and_insert_element_node(ObXmlElement *ele_node, ObXmlNode *update_node, int64_t pos, bool is_remove);
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// for pi node
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static int update_pi_node(ObMulModeMemCtx* xml_mem_ctx, ObXmlNode *xml_node, const ObExpr *expr, ObEvalCtx &ctx);
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#endif
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private:
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DISALLOW_COPY_AND_ASSIGN(ObExprUpdateXml);
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};
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} // sql
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} // oceanbase
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#endif // OCEANBASE_SQL_ENGINE_EXPR_OB_EXPR_UPDATE_XML_H
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