Loading Ext Classes required in a User Extension (OData.js)

Hi,



in order to connet to our MVC Web Api Controller Services using the OData Protocol, I implemented the User Extension : http://ift.tt/1jCDERL which for a GET Request seemed to work (returning valid json Data). I am using SA and have added the OData.js into the Resources folder.

My Rest proxy is thus defined as:

proxy: {

type: 'odata',

withCredentials: false,

username: 'mike',

password: 'pass',

url: 'https://.....',

reader: {

type: 'json'

}

}

The index.html which is auto-generated places the following reference:

<script src="resources/OData.js"></script>



When the OData.js is executed there is an override statement:



Ext.override(Ext.data.proxy.Server,{...,

where Ext.data is in this place undefined. It seems this code is executed before the Ext.Loader starts its work.



So my questions are:

Is this the way to use a custom extension (e.g. embed it in the resouce folder and use it )?

What must I do to avoid this error. How can I assure the required Ext classes are loaded for an external resource ?

"TypeError: Ext.data is undefined,

Ext.override(Ext.data.proxy.Server,{