I used RevEng to generate java and hbm from a sample database. The java class matches one to one to the hbm files except for two id generator classes.

My HibernateFactory class has a cfg.addDirectory(modelDirectory) which points to the directory containing both the hbm and .class files. This always worked up to now, but in this case gets a
org.hibernate.MappingException: component class not found: model.OrderdetailsId

I don't know why hibernate can not find the id class (it definitely is there), when it found all the other non-id classes.

I then tried add all the .class one by one, instead of adding the directory. now I get
org.hibernate.MappingNotFoundException: resource: model/OrderdetailsId.hbm.xml
which is true, since there is no hbm for the id class.

what is really the problem? I figure it is not a classpath problem, because, hibernate does seem to find all the classes except the id classes. it seems to insist that for every java class, there must be a corresponding hbm file.

search the web came up with reports by other people of the same problem, but never answered. anyone has any insights?

apparently, it is a classpath problem.

I used URLClassLoader to explicitly load all classes, including the id generator classes, but still get the "component class not found exception". Is there something else I have to do to get Configuration to recognize that these classes exist?