one-off extension of DataTableDataSource plugin ...

gistfile1.js

// Need to create a one-time extension of DataTableDataSource Plugin,
  
DTDSAddPag = Y.Base.create('datasourcepag', Y.Plugin.DataTableDataSource, [], {

     // Need to override this base method ...

        onDataReturnInitializeTable: function(e) {
            var records = (e.response && e.response.results) || [];

            // Add this to update the DS state
            this.set('state', e.response.meta );

            this.get("host").set("data", records);
        }

    },{

     // It's a plugin, so it needs these specified ...

        NAME: 'datatableDataSourcePag',
        NS:   'datasourcepag',

     // Need two new attributes to be added ...
        ATTRS:{
            queryStringTemplate : {
                value: null
            },
            state: {
                value:  {
                     startIndex: 0,
                     numRecs:    0
                } 
            }
        }
    });



// Now use all this stuff ...

var myDS = new Y.DataSource.IO(...);
myDS.plug(Y.Plugin.DataSourceJSONSchema, { ... });

var myDT = new Y.DataTable(...);

myDT.plug( DTDSAddPag, {
   datasource:	         ds,
   initialRequest:      '?iopt=getdata&startIndex=0&numRecs=500',
   queryStringTemplate: '?iopt=getdata&startIndex={startIndex}&numRecs={numRecs}'
});

myDT.render(...);

myDT.datasource.load(...);