How to send column/fields to subreport as collection in jasper

Question

So I've been able to make a second data source, pass down parameters, im all but ready, but I cant figure out how to send a collection of the field values in a column to the sub report. Ive tried setting a variable to the field value and sending that, I've tried sending the field directly.

I sort of assumed these wouldn't work because the data type is wrong, but i just don't know how to tell jasper that i want the fields as a collection.

Possible duplicate of [How to pass main report data source to subreport (JasperReports)?](http://stackoverflow.com/questions/8490563/how-to-pass-main-report-data-source-to-subreport-jasperreports) — Alex K, Oct 22 '16 at 19:20

score 0 · Answer 1 · answered Feb 06 '15 at 10:43

I use this in JasperSoft Studio 5.6.0 and it work fine :

<dataSourceExpression><![CDATA[new net.sf.jasperreports.engine.data.JRBeanCollectionDataSource($F{subReportDataField})]]></dataSourceExpression>

Where "subReportDataBean" is a field like this :

<field name="subReportDataBean" class="java.util.List">
    <fieldDescription><![CDATA[subReportDataBean]]></fieldDescription>
</field>

How to send column/fields to subreport as collection in jasper

1 Answers1