XQuery node is sequence

Question

Is is-node-in-sequence-deep-equal in XQuery? I'm wondering because I've seen the function at xqueryfunctions.com, but I'm not being able to use it.

Answer 1

That function is part of the FunctX XQuery library. There are two methods to use this function:

1. You download the whole library (select the download which corresponds to your version of XQuery), save it in the same directory as your XQuery program/file and then import the module in your XQuery file, e.g.:

   import module namespace functx = "http://www.functx.com" at "functx-1.0-doc-2007-01.xq";
   
   (: Insert your code here and call the is-node-in-sequence-deep-equal function as seen below :)
   
   functx:is-node-in-sequence-deep-equal($node, $seq)
   

2. Instead of downloading the whole library with all functions you can also simply copy paste the specific function which you need as shown on the page you linked to:

   declare namespace functx = "http://www.functx.com"; 
   declare function functx:is-node-in-sequence-deep-equal 
     ( $node as node()? ,
       $seq as node()* )  as xs:boolean {
   
      some $nodeInSeq in $seq satisfies deep-equal($nodeInSeq,$node)
    } ;
   
   (: Insert your code here and call the 'is-node-in-sequence-deep-equal' function as seen below :)
   
   functx:is-node-in-sequence-deep-equal($node, $seq)
   

In both examples you simply replace $node and $seq with your variables.