Subreport data to be either Connection or DataSour

[csplrj]

I have created the master report with subreport inside it. I want the subreport connection/datasource expression to be dynamic

i.e. I should be able to use the Connection or DataSource as per the Parameters value so that When i am working with Ireport then it wil use Connection and when i am coding it it will use DataSource

 

So I wrote

$P{RunMode}.intValue()==1?$P{REPORT_CONNECTION}:new JRBeanCollectionDataSource($P{subReportParam})

 

But it throws error saying Incompatible conditional operand Types during compiling

 

I think the error is as we have o choose either datasourceexpression or connectionexpression

 

I think we need some way to specify the expression which will convey whether to use datasourceexpression or connectionexpression

 

Is there any way out

 

Thanks in advance

 

CSJakharia