Hibernate version: 3.1 and tools 3.1.0 beta4

Hi,
following the hibernate tool pdf, I tried to generate some POJO's out of existing mapping files with the eclipse plugin.

There is some strange exception:
org.hibernate.MappingException: Could not read mapping document from
file:...

...
org.hibernate.MappingException: class org.mm.flightplanner.dao.hibernategen.Flight not found while looking for property: id
org.hibernate.MappingException: class org.mm.flightplanner.dao.hibernategen.Flight not found while looking for property: id
java.lang.ClassNotFoundException: org.mm.flightplanner.dao.hibernategen.Flight

However, I did not understand the stack trace here - i.e. why is the tool looking for a class, that code I'm trying to generate here?

Thanks in advance!
Mark

it is most likely trying to find the class because you did not specify the type of id - making it pretty hard for it to generate the proper field type.