XPath Get parent node from child node

Question

I need get the parent node for child node title 50  At the moment I am using only      title  50     How could I get its parent  Result should be the store node      lt  xml version  1 0  encoding  utf-8   gt   lt d data xmlns d  defiant-namespace  d mi  23  gt       lt store d mi  22  gt           lt book price  12 99  d price  Number  d mi  4  gt               lt title d constr  String  d mi  1  gt Sword of Honour lt  title gt               lt category d constr  String  d mi  2  gt fiction lt  category gt               lt author d constr  String  d mi  3  gt Evelyn Waugh lt  author gt           lt  book gt           lt book price  8 99  d price  Number  d mi  9  gt               lt title d constr  String  d mi  5  gt Moby Dick lt  title gt               lt category d constr  String  d mi  6  gt fiction lt  category gt               lt author d constr  String  d mi  7  gt Herman Melville lt  author gt               lt isbn d constr  String  d mi  8  gt 0-553-21311-3 lt  isbn gt           lt  book gt           lt book price  8 95  d price  Number  d mi  13  gt               lt title d constr  String  d mi  10  gt 50 lt  title gt               lt category d constr  String  d mi  11  gt reference lt  category gt               lt author d constr  String  d mi  12  gt Nigel Rees lt  author gt           lt  book gt           lt book price  22 99  d price  Number  d mi  18  gt               lt title d constr  String  d mi  14  gt The Lord of the Rings lt  title gt               lt category d constr  String  d mi  15  gt fiction lt  category gt               lt author d constr  String  d mi  16  gt J  R  R  Tolkien lt  author gt               lt isbn d constr  String  d mi  17  gt 0-395-19395-8 lt  isbn gt           lt  book gt           lt bicycle price  19 95  d price  Number  d mi  21  gt               lt brand d constr  String  d mi  19  gt Cannondale lt  brand gt               lt color d constr  String  d mi  20  gt red lt  color gt           lt  bicycle gt       lt  store gt   lt  d data gt

User · Accepted Answer

Use the parent axes with the parent node s name       title  50   parent  store   This XPath will only select the parent node if it is a store    But you can also use one of these      title  50   parent        title  50        These xpaths will select any parent node  So if the document changes you will always select a node  even if it is not the node you expect   EDIT     What happens in the given example where the parent is a bicycle but the parent of the parent is a store        Does it ascent     No  it only selects the store if it is a parent of the node that matches     title  50        If not  is there a method to ascent in such cases and return None if there is no such parent    Yes  you can use ancestor axes      title  50   ancestor  store   This will select all ancestors of the node matching     title  50   that are   stores  E g    lt data xmlns d  defiant-namespace  d mi  23  gt       lt store mi  1  gt           lt store mi  22  gt               lt book price  8 95  d price  Number  d mi  13  gt                   lt title d constr  String  d mi  10  gt 50 lt  title gt                   lt category d constr  String  d mi  11  gt reference lt  category gt                   lt author d constr  String  d mi  12  gt Nigel Rees lt  author gt               lt  book gt           lt  store gt       lt  store gt   lt  data gt

User · Answer

This works in my case  I hope you can extract meaning out of it     div text    building1  and  class  wrap   ancestor  tr td div div  class  x-grid-row-checker

User · Answer

New  improved answer to an old  frequently asked question        How could I get its parent  Result should be the store node    Use a predicate rather than the parent   or ancestor   axis  Most answers here select the title and then traverse up to the targeted parent or ancestor  store  element   A simpler  direct approach is to select parent or ancestor element directly in the first place  obviating the need to traverse to a parent   or ancestor   axes       book title    50     Should the intervening elements vary in name         title    50     Or  in name and depth          title    50

User · Answer

You can use the two dots at the end of expression  too  See this example       title  50

User · Answer

Just as an alternative  you can use ancestor       title  50   ancestor  store   It s more powerful than parent since it can get even the grandparent or great great grandparent

[xml] XPath: Get parent node from child node

Examples related to xml

Examples related to xpath