Re: GPathResult breakage in Groovy 5

[Milles, Eric (TR Technology) via dev]

I'm guessing it is "gpath.@id" not "this.@id" that throws the exception.  There 
have been some changes to help with private method access.  It is unclear 
without some additional tracing just where the attribute syntax falls down.

I don't quite know enough about GPathResult to know if 
"gpath.getAttribute('id')" or "gpath.getProperty('@id')" is the equivalent of 
"gpath.@id".


________________________________
From: Mattias Reichel <mattias.reic...@gmail.com>
Sent: Thursday, May 15, 2025 3:13 AM
To: dev@groovy.apache.org <dev@groovy.apache.org>
Subject: [EXT] GPathResult breakage in Groovy 5

External Email: Use caution with links and attachments.

When trying out Groovy 5 on the Grails codebase I am getting the following 
runtime error:

groovy.lang.MissingFieldException: No such field: id for class: 
groovy.xml.slurpersupport.NodeChild
    at 
org.grails.databinding.xml.GPathResultMap.<init>(GPathResultMap.groovy:35)
    at org.grails.databinding.xml.GPathResultMapSpec.Test nested 
elements(GPathResultMapSpec.groovy:44)


class GPathResultMap implements Map {
    protected GPathResult gpath
    protected id

    GPathResultMap(GPathResult gpath) {
        this.gpath = gpath
        this.@id = gpa...@id.text() ?: null // <-- This is the offending line
    }

There is no id attribute on the GPathResult root:

<person>
   <name>John Doe</name>
   <locations>
      <location>
         <shippingAddress>foo</shippingAddress>
         <billingAddress>bar</billingAddress>
      </location>
      <location>
         <shippingAddress>foo2</shippingAddress>
         <billingAddress>bar2</billingAddress>
      </location>
   </locations>
</person>

Is this expected behavior, and we need to update our logic, or is it an issue 
that needs addressing in Groovy?

Thanks
Mattias