jasper-reports Using subreports Passing datasoure to subreport
Example
This is a snippet of master report. The datasource is passed to the subreport with help of net.sf.jasperreports.engine.data.JRBeanCollectionDataSource constructor
<field name="someFieldWithList" class="java.util.List"/>
<!-- ...... -->
<subreport>
<reportElement x="0" y="0" width="200" height="70"/>
<parametersMapExpression><![CDATA[$P{REPORT_PARAMETERS_MAP}]]></parametersMapExpression>
<dataSourceExpression><![CDATA[net.sf.jasperreports.engine.data.JRBeanCollectionDataSource($F{someFieldWithList})]]></dataSourceExpression>
<subreportExpression><![CDATA[$P{SUBREPORT_DIR} + "subreport.jasper"]]></subreportExpression>
</subreport>
