Data being duplicated because of setModel

Question

hi,
we are trying to show unique values on our facet filter dropdown.
first time it works correctly,from second selection it starts to duplicate
the snippet is as follows
          var oList = oEvent.getSource();
                   var sKey = oList.getKey();
           oFacetFilterData[sKey] = aData;
           oModel = new sap.ui.model.json.JSONModel();
           var oFacetFilterItem = new sap.m.FacetFilterItem({
               text : "{text}",
               key : "{key}",
               selected: "{selected}"
           oModel.setData(oFacetFilterData);
           oList.setModel(oModel);
           oList.bindAggregation("items", "/" + sKey,oFacetFilterItem);
has anyone faced this issue with setModel method before.
please advise on how to resolve this issue.
thanks

Answer 1

There's a variety of ways to do it, but as far as the "best" it depends on the architecture of your main program, which I don't know.
If your main VI is set up as an event-drive framework (using the
event structure) you could trigger an event from the popup dialog via a
control's value change event. You just need to pass the control
reference to the sub VI.
Instead of polling for the reference you could use a global
variable. Same mechanism that you're using now, except you wouldn't
have to check for errors against a null reference.
You mentioned that the popup is intended to provide the user with
the ability to enter a comment that gets added to a text file. Could
the popup do this directly, rather than passing the information back to
the main VI? (Again, I don't know the architecture of your main VI.)
You could use notifiers. I've attached a simple example (LabVIEW 8.20) to show you this method. The popup was created using the "Prompt User" Express VI as a starting point.
If any others are watching this thread, please post any additional suggestions you may have.
Attachments:
Popup.zip ‏50 KB