title: SmartGWT Datasource customization tutorial
body: <p>I'm looking for a good tutorial on how to customize a DataSource in SmartGWT (a code sample will also do for now).</p>
  
  <p>Some details:<br>
  I have a GWT project which uses a proprietary client-server protocol for fetching data (with an extensive API based on GWT classes). The server is non-GWT based, i.e. GWT is used only for client side.<br>
  I'd like to use SmartGWT's widgets with this data by creating a custom DataSource which will interact with the existing GWT infrastructure.</p>
  
  <p>Does anybody know of such a resource?</p>
  
  <p><strong>EDIT:</strong></p>
  
  <p>Charles Kendrick's answer worked for me.</p>
  
  <p>For a working code example, you can see <a href="http://code.google.com/p/smartgwt-extensions/source/browse/#svn/trunk/src/main/java/com/smartgwt/extensions/gwtrpcds/client/example" rel="noreferrer">this</a>.</p>