Pass Table DataSource as Parameter

[highjo]

 Hello,

I'm developing an application in Java which generates reports using Jasperreports. My report has summary tables and a graph that uses a summarized form of the same data the main report uses. Rather than make multiple calls to the database for the same data, I fetch it once, process it and create three JRDataSources, one for the main and two for the tables/chart. Now, i want to pass the data sources for the tables as template parameters. Is this possible? If it is, could someone guide me as to how to do this? I need to set the data source passed as the source for the table.

Here are some snippets of my xml file:

Thanks.

Code:

...<subDataset name="Summary" uuid="7a0d9924-1304-410f-bfb5-2bccc7005adb">		....fields...</subDataset> ...<parameter name="summary" class="java.lang.Object"/>...<jr:table xmlns:jr="http://jasperreports.sourceforge.net/jasperreports/components" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports/components http://jasperreports.sourceforge.net/xsd/components.xsd">    <datasetRun subDataset="Summary" uuid="7a0d9924-1304-410f-bfb5-2bccc7005adb">				     <parametersMapExpression><![CDATA[$P{REPORT_PARAMETERS_MAP}]]></parametersMapExpression>						<dataSourceExpression><![CDATA[$P{summary}]]></dataSourceExpression></datasetRun>...</jr:table>