Preventing Report Generation from Scriptlet

[hussainian]

Hi!

Can we prevent a report to be generated from Scriptlet's beforeReportInit or afterReportInit methods?

Thanks.

AsadUllah.

[hussainian]

One way I'm doing it is using a function in PrintWhenExpression of all bands. This function in the scriptlet performs the logical part and returns TRUE or FALSE. So if the function returns TRUE, the bands are printed and if FALSE the report seems to be blank white page.

Though this solves the problem, but it seems illogical to go through all the report generation process even for the case when the report is not meant to be displayed. So is their any way we can stop the generation process in the start?

Thanks.

AsadUllah.

[lucianc]

Wouldn't throwing an exception do it?

Regards,

Lucian

[hussainian]

Well! The work done. I'm using JasperServer to view reports. Now what happens that a very long and odd Stack Trace is printed on the screen. Is there any way to remove this track and print own message?

Thanks Lucian.

Asad.

Post Edited by hussainian at 03/07/2010 11:30 AM

[lucianc]

hussainian
Wrote:

Is there any way to remove this track and print own message?

I think you'd have to customize JasperServer for that.

Or you could do something else:  use your current report as a subreport, and perform the check in the master report.  If the check fails, print a text field with the message.  If the check succeeds, include the subreport (via its print when expression).

Or, a slightly better version of your solution:  use the report's filter expression to skip all records from the data source, and print a message in the "no data" band.  The report would still fetch all records from the data source, but it wouldn't perform any layout work.

Regards,

Lucian