Unable to consume odata service in UI5

Hello Collegues,      

   i am trying to consume the Nothwind odata service in my UI application. In the controller class, i have written the following block of code

var oModel1 = new sap.ui.model.odata.ODataModel("http://services.odata.org/Northwind/Northwind.svc/");

varoModel2 = new sap.ui.model.odata.ODataModel("proxy/http://services.odata.org/Northwind/Northwind.svc/");

In both the case in the debug mode I could see oMetadata of oModel1 and oModel2 is empty.

It should be filled with the metadata of the model.

Could any one help in this?

Thanks in Advance,

Mohan