The virtual XML used by GNQuery includes also extended referencing informations. They are indentified by an extra extRefs element:

<audio nav:objectType="audio" id="..." name="..." modifiedDate="..." creationDate="..." size="..." rightsStatus="..." eventDate="..." duration="..." sampleRate="..." album="..." xmlns="..." xmlns:nav="http://www.teradp.com/schemas/GN4/1/ObjNav.xsd">

 <nav:referencing>

   <nav:referencingBy attrName="package.objs">

     <nav:extRefs handle="1">

       <ref idref="...">

         <title/>

         <caption>...</caption>

         <nav:refObject idref="...">

           <story nav:objectType="story" id="..." name="..." modifiedDate="..."

              creationDate="..." size="..." rightsStatus="..." nWords="..." nChars="..."/>

         </nav:refObject>

       </ref>

     </nav:refs>

   </nav:referencingBy>

 </nav:referencing>

</audio>

 

It is possible to do query like:

Get all the audio referenced by a specific package or story with a caption containing a specific word:

gn4:audio[nav:referencing/nav:referencingBy[@attrName='package.objs']/nav:extRefs/gn4:ref[@idref='obj63942' and contains(gn4:caption,'caption')]]

Get all the users with Delete permissions on a specific folder:

gn4:user[nav:referencing/nav:referencingBy[@attrName='folder.access']/nav:extRefs/gn4:securityAccess[@idref='obj6909' and gn4:grant='Delete']]

Get all categories used by calendar objects with a weight under 50:

gn4:category[nav:referencing/nav:referencingBy[@attrName='calendarObject.cats']/nav:extRefs/gn4:ref[@weight<50]]

Get all pub modes used to publish a specific object (id 44043) on a specific pub dest (id 1595):

gn4:pubMode[nav:referencing/nav:referencingBy[@attrName='pubDest.objs.pubModeRef']/nav:extRefs/gn4:ref[@idref='obj44043' and gn4:pubModeRef/@idref='obj1595']]

Get all users that created a libel tag for a specific object (id 3626) with a description containing a specific word ('libel'):

gn4:user[nav:referencing/nav:referencingBy[@attrName='archiveObject.libelTags.creatorRef']/nav:extRefs/gn4:item[gn4:creatorRef/@idref='obj3626' and contains(gn4:description,'libel')]]