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xmlxpathnullisnullorempty

Xpath to check if nod is null or text ist empty

I tried to find a xpath pattern to check, if the node is null or the child of the node is empty. But I couldn't find a solution.

I have the following XML:

 <ns2:getRFSParametersRequestContent>
   <ns2:userAccountId>asdfasdf</ns2:userAccountId>
 </ns2:getRFSParametersRequestContent>

Now i need to check, if userAccountId is empty like . But sometimes, the node userAccoundId does not exist, in this case, I will also get the information, that it doesn't exist.

<ns2:getRFSParametersRequestContent>
</ns2:getRFSParametersRequestContent>

So that in case of missing node, or the node is empty, my xpath will match on true. But I can always just check if node is null or if the text is null.

Is there a possibility to check both in one pattern?

Solution

  • If you want to get true if userAccountId node is absent or in case it doesn't contain any text content, try

    boolean(not(//getRFSParametersRequestContent/userAccountId[normalize-space()]))