CODEWITHSUNDEEP
jasper-reports
Claudinei
Claudinei

Reputation: 305

How to test null Double value in Jasper Reports?

I need to show a static text field only if the price value is not null, i tried to do this:

<printWhenExpression>
  <![CDATA[$F{price} != null]]>
</printWhenExpression>

But this not works, it's always returns true with Double value, in a String value it worked.

Edit: The code started to works, I will keep this because the helpfull reply.

Upvotes: 0

Views: 1478

Answers (1)

Petter Friberg
Petter Friberg

Reputation: 21710

This is not true if the $F{price} is null the expression will return false.

Maybe you do not need to check for that is null but that it is not Double.NaN

<printWhenExpression>
   <![CDATA[new Boolean($F{price} != null && !$F{price}.isNaN())]]>
</printWhenExpression>

I suggest you output the value of $F{price}, to understand what it is...

NOTE: I'm using new Boolean() for compatibility reasons (jasper report v 3) this is not needed in jasper report v 5,6

Upvotes: 1

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