Viewcriteria question

I am using Jdeveloper 11g R (11.1.2.3) & weblogic 10 G
In my pages I use JSF & Facelet
Hi All
When using Viewcriteria to query view object what is the difference if
we get VariableValueManager from view object of Viewcriteria it self?
Which one is advised?
way 1:
        ViewObjectImpl locationVW = getLocationsVO1();
        VariableValueManager vvm = locationVW.ensureVariableManager();
        vvm.setVariableValue("param", param);
        ViewCriteria vc = locationVW.getViewCriteria("filterById");
        locationVW.applyViewCriteria(vc);
        locationVW.executeQuery();
way 2:
ViewObjectImpl locationVW = getLocationsVO1();
        ViewCriteria vc = locationVW.getViewCriteria("filterById");
        VariableValueManager vvm = vc.ensureVariableManager();
        vvm.setVariableValue("param", param);
        locationVW.applyViewCriteria(vc);
locationVW.executeQuery();

Hi Timo
Really no , I want to know what is the difference and which one is better
If they are acting the same why Oracle implement 2 methods?
I remember in one of your blogs (not sure which post) I think you get it from viewcriteria
In out application we have shared app module with about 20 ref data tables when getting VVM from view criteria it is workig fine
when getting from view object in some cases it retrieve all records in table (ignore the filter)
Thanks
Mohsen

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[JDeveloper 10.1.3 SU4]
[JHeadstart 10.1.3 build 78]
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