fix update_triple

Author: Francesca-Bit

lib/query/woqlBuilder.js

@@ -13,6 +13,7 @@
 const WOQLQuery = require('./woqlQuery');
 const WOQLLibrary = require('./woqlLibrary');
 
+WOQLQuery.prototype.counter = 1;
 /* class WOQLQuery extends WOQLQueryImp {
     constructor(query) {
         super(query)
@@ -63,7 +64,7 @@ WOQLQuery.prototype.iri = function (s) {
 };
 
 WOQLQuery.prototype.update_triple = function (subject, predicate, new_object, old_object) {
-  const tmp_name = old_object || `v:AnyObject__${Date.now()}`;
+  const tmp_name = old_object || `v:AnyObject__${this.counter += 1}`;
   return this.and(
     new WOQLQuery().opt(
       new WOQLQuery()
@@ -88,7 +89,7 @@ WOQLQuery.prototype.update_triple = function (subject, predicate, new_object, ol
  */
 
 WOQLQuery.prototype.update_quad = function (subject, predicate, new_object, graph) {
-  const tmp_name = `v:AnyObject__${Date.now()}`;
+  const tmp_name = `v:AnyObject__${this.counter += 1}`;
   return this.and(
     new WOQLQuery().opt(
       new WOQLQuery()