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jasper-reports

Variable null if report is paginated Variable null if report is paginated

im new to Jasper and im trying to learn at the moment cause of my job.

Im developing a report which has a table filled with data from a secondary dataset.

I need to get the first and last register from the table in a variable and i encountered 2 problems:

If its not paginated, i only get the value of the last register and I dont realise how to get the first value.

If the report generates page 2, the table stay at the first page and the section where i print the variables at second page. In this case variables are null.

I cannot share code for professional reasons, but i hope you can still help me.

Solution

  • I encountered a solution. Not the type of solution i was looking for thoght'

    The solution is as simple as modify the SQL of the dataset and just print a field, not a variable.