#119 fix using «update_triple» with three parameters and «and»

Author: Francesca-Bit

lib/query/woqlBuilder.js

@@ -58,12 +58,12 @@ WOQLQuery.prototype.iri = function(s) {
 }
 
 WOQLQuery.prototype.update_triple = function(subject, predicate, new_object, old_object) {
-    old_object = old_object || 'v:AnyObject'
+    const tmp_name = old_object || 'v:AnyObject__'+ Date.now()
     return this.and(
         new WOQLQuery().opt(
             new WOQLQuery()
-                .triple(subject, predicate, old_object)
-                .delete_triple(subject, predicate, old_object)
+                .triple(subject, predicate, tmp_name)
+                .delete_triple(subject, predicate, tmp_name)
                 .not()
                 .triple(subject, predicate, new_object),
         ),
@@ -81,11 +81,12 @@ WOQLQuery.prototype.update_triple = function(subject, predicate, new_object, old
  */
 
 WOQLQuery.prototype.update_quad = function(subject, predicate, new_object, graph) {
+    const tmp_name = 'v:AnyObject__'+ Date.now()
     return this.and(
         new WOQLQuery().opt(
             new WOQLQuery()
-                .quad(subject, predicate, 'v:AnyObject', graph)
-                .delete_quad(subject, predicate, 'v:AnyObject', graph)
+                .quad(subject, predicate, tmp_name, graph)
+                .delete_quad(subject, predicate, tmp_name, graph)
                 .not()
                 .quad(subject, predicate, new_object, graph),
         ),