Created attachment 828757 [details]
Exception stacktrace

Description of problem:

When attempting to persist a KieSession containing a trait fact, the serialization fails with the following exception (see attachment for complete stack trace):

java.lang.NoSuchFieldError: __$$field_Tms$$
	at org.drools.persistence.kie.persistence.session.JpaPersistentStatefulSessionTest$DoorWrapper.writeExternal(Unknown Source) ~[na:na]
	at java.io.ObjectOutputStream.writeExternalData(ObjectOutputStream.java:1443) ~[na:1.7.0_09-icedtea]
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1414) ~[na:1.7.0_09-icedtea]
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174) ~[na:1.7.0_09-icedtea]
	at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:346) ~[na:1.7.0_09-icedtea]
	at java.util.ArrayList.writeObject(ArrayList.java:710) ~[na:1.7.0_09-icedtea]

Version-Release number of selected component (if applicable):

Drools 6.0.0-SNAPSHOT
BRMS 6.0.0 ER5

This issue was not present in ER4.

How reproducible:

Run the test org.drools.persistence.kie.persistence.session.JpaPersistentStatefulSessionTest#testTraitsSerialization from the pull request which will be attached shortly.

Actual results:

Transaction cannot be committed due to the serialization error.

Expected results:

Transaction is committed and the test passes.