Passing a new XML data source to a sub report

[danlee1000]

I am trying to generate a report using both SQL *and* XML data sources in the same Jasper report.

The main report uses a SQL data source.

I created another report that uses an XML data source, which I am trying to embed as a sub report inside the main report with the following XML statements:

<subreport>

  <reportElement x="19" y="11" width="536" height="102" uuid="c7a452ed-9e89-4d4e-966b-41cb790abef6"/>

  <dataSourceExpression><![CDATA[new net.sf.jasperreports.engine.data.JRXmlDataSource("/Users/danlee/Downloads/sample-FasDocumentRequestEvent.xml")]]></dataSourceExpression>

  <subreportExpression><![CDATA["/Users/danlee/FasDocumentRequestReport_XMLTest.jasper"]]></subreportExpression>

</subreport>

 

I did a preview in iReport Designer. It compiles, but the subreport returns just 'null' instead of a correct value that it normally returns when it was run as a main report. What could be a problem?