Fields set to type java.util.Collection search for field description instead of field name

The category for this bug should not be "[iReport] Bugs iReport (up to 3.0.x)". The bug is reported on iReport 4.1. This is an old version... but not as old as 3.0.

 

I have re-assigned the bug to a member of the JasperReports team, since I have never used a Java Bean data source before.

 

I speculate the the problem is simple. The description reads this:

(new net.sf.jasperreports.engine.data.JRBeanCollectionDataSource($F{field}))

 

But the report data source is a Java Bean containing a Collection field, not a Java Bean containing a Java Bean field. Therefore the subreport data source expression should instead be this:

new net.sf.jasperreports.engine.data.JRMapCollectionDataSource($F{field})

The report data source used is a Collection of Java PoJo Objects and are indeed Java Beans associated with tables in a DB. That the PoJo has a property of type list/collection containing PoJos, is in this case a coincidence that caused this bug to appear.

The PoJo's property is a list/collection of Java Beans to be precise. The PoJos are being generated by hibernate.

 

But as I can see inside the method "JRAbstractBeanDataSource.getBeanProperty" that it is returning the description and not the name, for me the problem is straightforward.

I have attempted again--still unsuccessfully--to fully understand the issue. But that's OK. I'm not a developer. BUT... the bug is still incorrectly defined as an iReport 3.0 or earlier issue. Actually... it sounds to me like a JR issue rather than an iReport issue.

 

I have attempted again--successfully this time--to assign the bug to someone on the iReport team.

 

 

Example:

A collection of Person JavaBeans (Pojos) with a property called children. Children itself is a list/collection of JavaBeans (Pojos).