java.math.BigDecimal in CT- shows 0 instead of ""

[markos17]

I use Crosstable in which i show some values in different periods. I used to use Java.lang.string and eveyrthing was ok. When in database position didn't have any value, then in report it was the same.

Last time, I wanted to use summary column, that'd sum all values in rows and columns. I had to change type to java.math.Bigdecimal. Since then instead of " ", it shows 0. Is there any way to solve it out?

[giulio]

Use this expression:

($V{your_value} == 0) ? null : $V{your_value}

and then set the Blank when null checkbox.

Now, can you read this post? It's very important:

http://jasperforge.org/plugins/espforum/view.php?group_id=83&forumid=101&topicid=74332

Thanks a lot

Giulio

 

 

[markos17]

unfortunately, I have errors with types. how can i cast 0 from Int to BigDecimal?

 

java:154: incomparable types: java.math.BigDecimal and int

value = (java.math.BigDecimal)((((java.math.BigDecimal)variable_wylMeasure.getValue()) == 0) ? null

[slow]

suppose A is an int and B is a BigDecimal :

B = new BigDecimal(A);

 so... new BigDecimal(0)

 

 

Post Edited by slow at 05/13/2010 09:35

[markos17]

thanks for the hint.
It doesn't show error any more, but also still doesn't bring any effect.
Now the formula is:
($V{wylMeasure} == new BigDecimal(0)) ? null : $V{wylMeasure}
but still shows "0"
It looks like, the formula can't find the "0". When I swaped formula into:
($V{wylMeasure} == new BigDecimal(0)) ? $V{wylMeasure} : null 
then all cell are empty.
I also tried many other combination, like new BigDecimal("0") and so on..
When I change BigDecimal into String, then it works fine, show empty cells instead of "0", but the in the TOTAL column there are values from the previous column. I attach Excel File with an example. Any ideas, as I'm startin to give up :/

Post Edited by markos17 at 05/13/2010 11:12

[slow]

$V{wylMeasure} in a BigDecimal?

then use:

($V{wylMeasure}.intValue() ==0) ? null : $V{wylMeasure}

 

_________________________________________

if it works... give me KARMA points please!    : ) 
_________________________________________

 

listening: Underworld - Beautiful Burnout

[markos17]

It almost works! There is just one issue. It also cut off cells with actual value of zero: "0.0000".

[slow]

ehm... you  must implement a logic to distinguish the value 0 from the "real"  value 0... as you want...
a miracle in informatic doesn't exists... so use your fantasy :)

[markos17]

hehe, i know that distinguishing is a matter, but any clues, how to help my fantasy :)

[slow]

try to draw a table indicating which fields you want to see and what not, perhaps it would be more easily give you an idea rather than trying to give in general, maybe wrong ...

also ask questions is an art, right?

:)

[markos17]

sure, sure :) i'm attaching Excel

[markos17]

delete

Post Edited by markos17 at 05/13/2010 14:12

[slow]

Unfortunately you are not clear ...
I'm going to go away from work so 'can not investigate further.

However, you could use instead of BigDecimal textfield , you can use texfield of type String and set the value of the string (which contains 0)you don't want to see  to "" and "0" the others...

[markos17]

ok, it works now. I use such formula:

($V{wylMeasure}.toPlainString() == "0") ? null: $V{wylMeasure}

 

Thanks a lot!!!

[cjasper]

This works but it leaves a blank space in place of the null row group.I am using $V{your_value} as row group.I have tried setting the property of totals to float but the gap remains. Any idea ?