I try to use the CMPInMemoryPersistenceManager.java with CMP 2.x in JBoss 3.0.6.
It seems to be a (the only?) way to access the same data in a Bean from many clients without writing it to a database. Or is there another / a better way?
So far I have two problems:
1. There has to be a field called "id" with a unique key in the Bean class (I get an Exception if there is none). Should be no problem now that I found out. But what should be in that field? (And why does id have to be there? Isn't it possible to use the Primary Key?)
2. More serious: An InstantiationException is thrown when using the Bean for the first time (home.create() seems to be no problem). I have also created an empty Constructor in my Bean class but that did not change anything. Could you please help? java.lang.InstantiationException at sun.reflect.InstantiationExceptionConstructorAccessorImpl.newInstance(InstantiationExceptionConstructorAccessorImpl.java:30) at java.lang.reflect.Constructor.newInstance(Constructor.java:274) at java.lang.Class.newInstance0(Class.java:306) at java.lang.Class.newInstance(Class.java:259) at org.jboss.ejb.plugins.CMPInMemoryPersistenceManager.createBeanClassInstance(CMPInMemoryPersistenceManager.java:135) at (....)
