List Collection Data Not visible in mainreport of subreport - iReport

Hi

I have been wondering How iReport takes care of subreport I faced all above problem doing subreport in iReport.

In order to pass List / collection to subreport following things need to be done....

In Main Report. >>>>>>>>>>>>>>>>> Put Following

<import value="net.sf.jasperreports.engine.*"/>
<import value="net.sf.jasperreports.engine.data.*"/>

//Define List

<field name="addresses" class="java.util.List"/>

Pass List to subreport

<subreport isUsingCache="true">
<reportElement x="0" y="39" width="555" height="276"/>
<dataSourceExpression><![CDATA[new net.sf.jasperreports.engine.data.JRBeanCollectionDataSource($F{addresses})]]></dataSourceExpression>
<subreportExpression class="java.lang.String"><![CDATA[$P{SUBREPORT_DIR} "report1_subreport5.jasper"]]></subreportExpression>
</subreport>


In Subreport >>>>>>>>>>>>>>>>> put Following

very important >>> below address is field in my addressess List in Main Report

<field name="address" class="java.lang.String"/>


and In Detail Section Put Following

<textField isStretchWithOverflow="true" isBlankWhenNull="true">
<reportElement x="142" y="20" width="92" height="20"/>
<textElement>
<font size="12"/>
</textElement>
<textFieldExpression class="java.lang.String"><![CDATA[$F{address}]]></textFieldExpression>
</textField>

Remeber Many time you might not see subreport visible in main report reson being it the Property for Data to visible >>

"When No Data "(Property of report) should be set accordingly.

Hope this might help some one....

Ranjit

Subreport not displayed in main Jasper Report ireport

Hi
I am sure somebody would face this problem..
Using ireport 3.7.2

Subreport in Ireport is not displayed until I do the following.

<subreport><reportelement height="100" width="200" x="146" y="100"><subreport>
<reportelement height="100" width="200" x="146" y="100">
<datasourceexpression></datasourceexpression>
<subreportexpression class="java.lang.String"></subreportexpression></reportelement></subreport>
<datasourceexpression></datasourceexpression>
<subreportexpression class="java.lang.String"></subreportexpression></reportelement></subreport>

Remember to set properties of subreport (Also if ur using a static text to display in subreport)

Connection Type >>>> Use a datasource expression
Data Source Expression >>>> new net.sf.jasperreports.engine.JREmptyDataSource()

Make Sure you select "When No Data" Property to All Section No Details. most of the time Problem would be that data being set properly to subreport.




Look at this link for added information

http://www.jasperassistant.com/docs/guide/index.html

Jasper Reports Java Objects/Class Map Example

Hi All,

Jasper Report Java Object Mapping example..

Following link give most of it. though it is back dated..

http://ireport.sourceforge.net/cap3.html


There are few books on IReport >> You might want to download from here.
Guide To IReport



Guide To JasperReport for Java