XPath 1.0: Find all elements that are mentioned inside a different element-CodePudding

For example, I have this:

<setting>
  <name>text1</name>
</setting>
<setting>
  <name>text2</name>
</setting>
<setting>
  <name>text3</name>
</setting>

<thing>
  <name>name</name>
  <settings>
    <li>text1</li>
    <li>text3</li>
  </settings>
</thing>

I need to select all "setting" nodes that are mentioned inside "thing/settings/li". In the example the xpath should return setting[1] and setting[3].

CodePudding user response：

You can not do this directly with XPath 1.0.
What you can do with XPath 1.0 and some additional code is to get the list of values inside thing/settings/li with

//thing/settings/li

And then to find all the setting nodes with those values with something like

//setting/name[text()='value']

Where value will be a parameter passed there form the previously found list.
How to pass the parameter depends on language you are using etc.

CodePudding user response：

Wrap your XML in a single root element so that it is well-formed. Then...

This XPath,

//setting[name=//thing/settings/li]

will select all settings whose name is among those listed in //thing/settings/li:

<setting>
  <name>text1</name>
</setting>
<setting>
  <name>text3</name>
</setting>

as requested.