How to use JSON list as data in a Table in a Jasper Report

I have a JSONDatasource that I want to use to create a report.  The data contains a list of items I want to present in a Table.  The data looks like:

{ "sensors":{ "reportDate:"12-04-2014",
        "rows":[
            {"eventCode":2},{"eventCode":3},{"eventCode":4},{"eventCode":5}

] } }

I am able to acces the report date with the following:

<queryString language="json">
        <![CDATA[sensors]]>
    </queryString>
    <field name="reportDate" class="java.lang.String">
        <fieldDescription><![CDATA[reportDate]]></fieldDescription>
    </field>

I cannot figure out how to use the rows in a table.  There is not much on the web and the documentation and samples only talk about subreports which this is not.

Thanks

Scott