Question

I use a Jasper as a report engine (using iReport-4.0.0)
My datasource is XML file datasource and use XPath expression when filling the report
For example
Sample Data

<StudentList>
<Student>   
    <StdntCd>cd11</StdntCd>
    <StdntNm>ee11</StdntNm>
    <Schl>Schl11</Schl>
    <Cty>Cty11</Cty>
</Student>
<Student>   
    <StdntCd>cd22</StdntCd>
    <StdntNm>ee22</StdntNm>
    <Schl>Schl22</Schl>
    <Cty>Cty22</Cty>
</Student>
</StudentList>

And my XPath expression is that

/StudentList/Student

The issue happened when No data such that

<StudentList>

</StudentList>  

My need to show all section of the report without detail (because there is no data)
Although i set “When No Data” property with “All Sections,No Detail”
But still not work
Note
No data is equivalent to the previous XML NOT like that

<StudentList>
 <Student></Student>
</StudentList>

Answer 1

In order to avoid this best is to define a printWhenExpression for the detail band.

in iReport: click in report inspector on detail band, in properties panel modify printWhenExpression to $F{StdntCd} != null : this will only show students that do have a code other than null.

If you utilize the REPORT_COUNT variable, you will need to add a custom variable instead:

• type: java.lang.Integer
• Calculation: Sum
• Expression: $F{StdntCd} == null ? 0 : 1
• Initial value: 0

This will allow you all the time the correct output, assuming that the field StdntCd can never be null if valid data is provided.

If your report runs with a different language than groovy you might need to adjust the expressions.