loading data from dojo rpc to dojo datagrid

[Ahmed M. Omar]

i made a remote procedure call to a struts 2 action using dojo and it returns data successfully from the action

the next step is to put this data to a dojo datagrid i wrote the following code

<%@ taglib prefix="s" uri="/struts-tags" %>

       
        

	<script type="text/javascript">
		var djConfig = {
			isDebug: true
		};
	</script>

	<script src="../script/dojo/dojo.js.uncompressed.js" type="text/javascript"></script>

<script type="text/javascript">
	dojo.require("dojo.io.iframe");
	dojo.require("dojo.io.script");
	dojo.require("dojo.rpc.JsonpService");
	dojo.require("dojo.rpc.JsonService");
	dojo.require("dojo.rpc.RpcService");
	dojo.require("dojox.grid.DataGrid");
	dojo.require("dojox.data.CsvStore");
	dojo.require("dojo.data.ItemFileReadStore");
</script>


<s:url id="smdUrl" namespace="/nodecorate" action="RpcAction"/>
<script type="text/javascript">
	var service = new dojo.rpc.JsonService("${smdUrl}");
</script>

  
</table>
<table id="gridNode" jsId="grid" dojoType="dojox.grid.DataGrid"
           query="{ empName: ‘*’ }" store="jsonStore">
        <thead>
                <tr>
                        <th field="empName">Employee Name</th>
                        
                </tr>
        </thead>
</table>

<button onclick="refreshData();">Search</button><br>


        

<script type="text/javascript">

	refreshData = function() {
		var rowsCallback = function(emps) {
			var jsonStore = new dojo.data.ItemFileReadStore({ url: emps }); 
			var grid = new dojox.grid.DataGrid({
			        id: 'grid',
			        query: { empName: '*' },
			        store: jsonStore,
			        structure: layout
			}, 'gridNode');


            };
		var deferred = service.rpcMethod();
		deferred.addCallback(rowsCallback);
	}
	
	dojo.addOnLoad(function() {
		refreshData();
	});	
</script>

in the following line

var rowsCallback = function(emps)

the emps is a json array and at this point the data is arrived perfectly

i want to put the elements of the array to the datagrid