modified to include isMemberOf and isPartOf in addition to isMemberOfCollection in mods:relatedItem

workflow_client/plugins/mods_extend.inc

@@ -66,7 +66,10 @@ class mods_extend extends Process {
         }
       }
       
-      $collections= $relsExtDom->getElementsByTagName('isMemberOfCollection');
+      $relationships = array('isMemberOfCollection','isMemberOf','isPartOf');
+      foreach ($relationships as $relationship) 
+      {
+	$collections= $relsExtDom->getElementsByTagName($relationship);
 	for ($i=0; $i < $collections->length; $i++) {
 	  $collection = $collections->item($i);
 	  list(, $ident) = explode('/', $collection->getAttribute('rdf:resource'));
@@ -93,6 +96,7 @@ class mods_extend extends Process {
 
 	  $modsRoot->appendChild($relatedItem);
 	}
+      }
       
       $identifier = $modsDom->createElement('mods:identifier', $pid);
       $identifier->setAttribute('type', 'pid');