Print When Expression

[gr4nt4]

Hi all

 

Using 'Print When Expression' I'm looking to do two things

 

1. When a field value is above a certain value .. do not print ie somthing like

 

 

$F{myVal} <=100 then print value else do not print

 

 

2.Always hide a field

 

I tried Boolean (true) but an error

 

as you may guess I'm not a java man

 

Thanks for the help

[lucianc]

Try

Code:

Boolean.valueOf($F{myVal}.intValue() <= 100)

and

Code:

[code]Boolean.TRUE

 

If you're not literate in Java you could try using the Groovy or BeanShell compilers as you'd be able to use a simpler syntax.

 

HTH,

Lucian

[gr4nt4]

Yep that got it many thanks, I'll also take a look at groovy

[martynhiemstra]

Hi All

 

I find this really strange. I am using Java 5. In java 5 Boolean and boolean are both allowed and dont need to be casted. According to jasperreports, the printWhen expression must contain valid Java code and must return a boolean. Then why on earth must the print when expression generate Boolean and not boolean. For example:

 

$F{FieldName} != null (Mot allowed)

new Boolean($F{FieldName} != null) (Is allowed)

 

That is really strange behavior because in Java 5 it would be

 

$F{FieldName} != null (Is allowed)

new Boolean($F{FieldName} != null) (Is allowed)

 

Could someone explaing this please?

[lucianc]

If you use the JDT-base compiler, you need to instruct it to compile 1.5 code. You can read how to do that here.

 

HTH,

Lucian

[martynhiemstra]

Hi Lucianc

 

Thanks for your quick response. In short for those of you who dont want to follow the link:

 

To compile Java 1.5 code with this compiler, you might need to explicitly set the following properties in your jasperreports.properties file:

 

Code:

org.eclipse.jdt.core.compiler.source=1.5
org.eclipse.jdt.core.compiler.compliance=1.5
org.eclipse.jdt.core.compiler.codegen.TargetPlatform=1.5