hiding subreport

[ummekulsum4321]

how can we hide a subreport if no data is present on a condition

in my case i have 4 subreport 

and how to avoid the space which is formed if no data is present

[I am Leo]

You can use printWhenExpression to show/hide your subreport.

<subreport>    <reportElement x="26" y="14" width="190" height="17" uuid="285bfacd-4092-4d3a-ac1f-6d72074350ae">       <property name="com.jaspersoft.studio.unit.width" value="px"/>       <property name="com.jaspersoft.studio.element.name" value="mySubreport"/>       <printWhenExpression><![CDATA[$P{checkoutPointItems} == null || $P{checkoutPointItems}.isEmpty()]]></printWhenExpression>    </reportElement>    <dataSourceExpression><![CDATA[new net.sf.jasperreports.engine.data.JRBeanCollectionDataSource($P{checkoutPointItems})]]></dataSourceExpression>    <subreportExpression><![CDATA["templates/pdf/subreports/checkout-point-item.jasper"]]></subreportExpression></subreport>[/code]

 

[ummekulsum4321]

i wanted to hide the report the the data is null but instead its hiding even if data is present

[jgust]

If you know ahead of time that you want to suppress a band or subreport then @IAmLeo is correct that you can pre-emptively suppress it using the print when expression, either on the band or the subreport depending on your layout.

If you want to suppress the subreport only if there is no data then I think what you need to do is set the "When No Data Type" field to "No Data Section" and make that section really small.

Another option (I haven't tried this yet) would be to pass back a record count from the subreport using the Edit Return Values and see if you can suppress based on the return value.  Like I said I haven't tried that yet.  The "No Data Section" in the subreport has always worked well for me.