Question

I’m building a report where I have a subreport. This subreport brings some data through XPath, this means it’s everything strings from a XML. One of the columns of this subreport has some values, where I need do sum them and show in the end of the table.

I don’t know how to put this to work. I’ve tried to create a variable with sum parameter, but it does not work.

Did anybody need this before?

Scenario:
I load a lot of values from a XPath query, e.g:
/something/something1/something2

This query returns some fields according to my needs. With them I build a table (in a subreport). The problem is: the last column (4), values are strings from XML.

iReport version: 3.0.0

Really thanks!

Answer 1

Solution:

What I needed? According to the original post, a column with strings read from a XML through XPath and a footer with the sum.

Result from column SUM

What to do? Create a variable where you’ll keep your sum. After created, edit it. e.g:enter image description here

Fill variable expression with the format you need. Here I used

new BigDecimal($F{theFieldToSum});

Click ok. Now the variable is created, you must create a new TextField where you’ll show your sum. Create it and edit it. Here I used the following format:

new java.text.DecimalFormat("#,##0.00").format($V{theVariableYouCreatedBefore})

Click “Apply” and that’s all. Compile your report and now you’ll have the expected result. For sure, you can do some adapt, but in general this is the process.