XWIKI-8623: AddObject action ignores the submitted property values

* Add comment to explain why we use only the class name without the object number.

xwiki-platform-core/xwiki-platform-oldcore/src/main/java/com/xpn/xwiki/web/ObjectAddAction.java

@@ -65,10 +65,13 @@ public boolean action(XWikiContext context) throws XWikiException
         EntityReference classReference = this.relativeResolver.resolve(className, EntityType.DOCUMENT);
         BaseObject object = doc.newXObject(classReference, context);
 
-        // We need to have a string in the map for each field for the object to be correctly created.
-        // Otherwise, queries using the missing properties will fail to return this object.
         BaseClass baseclass = object.getXClass(context);
+        // The request parameter names that correspond to object fields must NOT specify the object number because the
+        // object number is not known before the object is added. The following is a good parameter name:
+        // Space.Class_property. As a consequence we use only the class name to extract the object from the request.
         Map<String, String[]> objmap = oform.getObject(className);
+        // We need to have a string in the map for each field for the object to be correctly created.
+        // Otherwise, queries using the missing properties will fail to return this object.
         @SuppressWarnings("unchecked")
         Collection<PropertyClass> fields = baseclass.getFieldList();
         for (PropertyClass property : fields) {