Fetch grid report data as json.

main.java

            WebReportSource reportSource = adminSession.getFactory().getReportSource();
            WebReportInstance webReportInstance = reportSource.getNewInstance("the-original-grid-id");
            webReportInstance.setExecutionMode(EnumWebReportExecutionModes.REPORT_MODE_PLAIN_TEXT);
            webReportInstance.getExportSettings().setMode(EnumDSSXMLExportFormat.DssXmlExportJSON);
            webReportInstance.setAsync(false);
            webReportInstance.pollStatus();
            System.out.println(webReportInstance.getResultsAsJSON());