Using arrays in iReport

[joannem]

Hi,

 

I am using an xml datasource which contains a field I need to reference. The field value is a comma delimited list (0,0,1,0,2,255,0). I need to be able to separate the values as each entry in the list represents an hourly value. I can use split to put the value in an array but then I'm not sure how to access the individual array values.

 

Anyone know a way for me to do this?

 

Thanks!

[kurosa]

i was in same situation right now.

 

create Variable that the data type 'java.lang.String[]' or Integer[]

 

the data type you can select is only String/Integer, so add [] after String/Integer

 

Then write variable expression

$F{array}.split(,)

 

after that, text field expression is $V{variable}[0].

 

does it help you?

[joannem]

Thank you so much! That worked perfectly! I didn't realize I could just add the [] at the end of java.lang.String!!!

[Tom C]

Just FYI...

 

split() is a Javascript method that split a string into an array of stings.

For detail, please take a look at http://www.w3schools.com/jsref/jsref_split.asp

[dunialebah7]

What I have to do if I want to display all array values?

[aypatel90]

To dunialebah7: You can use $V{variable}[Report_Count] with above procedure to display the whole array.

[JRFerreira]

Hi there,

 

I have the same proble, but i'm using jasper Studio.

I created a variable with:

 - Valude Class Name: java.lang.Srting[]

- Expression: $F{array field}.split(',')

 Then at cell table i put $V{variable name}[0]

 

When i try ti generate the previes gives this error:

Error evaluating expression for source text: $F{modelo}.split(', ')

 

I need some help here. :