Yes, i use jasperreports with subreports and dbforms. But it's a little bit
tricky.
1. dbforms only passes the data to the main report. Data for subreports must
come from sql statements wich are linked to the masterreport.
2. You must send the connection from the param object to the detailreport -
this is constructed inside dbforms.
The masterreports REPORT_CONNECTION is'nt defined because data comes from
an dbforms ReportDataObject.
Here is an example:
....
<parameter name="PARAM" isForPrompting="true"
class="org.dbforms.servlets.reports.ReportParameter"/>
.....
<subreport isUsingCache="true">
<reportElement
mode="Opaque"
x="0"
y="152"
width="515"
height="15"
forecolor="#000000"
backcolor="#FFFFFF"
key="subreport-2"
stretchType="NoStretch"
positionType="Float"
isPrintRepeatedValues="true"
isRemoveLineWhenBlank="true"
isPrintInFirstWholeBand="false"
isPrintWhenDetailOverflows="false"/>
<subreportParameter name="ID">
<subreportParameterExpression><![CDATA[$F{ID}]]></subreportParameterExpressi
on>
</subreportParameter>
<subreportParameter name="PARAM">
<subreportParameterExpression><![CDATA[$P{PARAM}]]></subreportParameterExpre
ssion>
</subreportParameter>
<connectionExpression><![CDATA[$P{PARAM}.getConnection()]]></connectionExpre
ssion>
<subreportExpression
class="java.lang.String"><![CDATA[$P{PARAM}.getReportPath() +
"Artikel_Laengen.jasper"]]></subreportExpression>
</subreport>
....
Cheers,
Henner
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