Message Title

I wasn't sure this bug could get any worse, but it did. At first the problem was just the converter not overriding built-in types, like Serializable. If you removed Serializable from the type of the @Convert property, the converter system worked just fine. This was the "work-around," if you can call it that. Now it's broken worse.

As of beta3, if you remove Serializable from the type, Hibernate now fails to start! It decides that the entity simply isn't mappable:

Exception in thread "main" javax.persistence.PersistenceException: [PersistenceUnit: test-jpa-converters] Unable to build Hibernate SessionFactory
	at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.persistenceException(EntityManagerFactoryBuilderImpl.java:1209)
	at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.access$700(EntityManagerFactoryBuilderImpl.java:119)
	at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform(EntityManagerFactoryBuilderImpl.java:847)
	at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform(EntityManagerFactoryBuilderImpl.java:836)
	at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.withTccl(ClassLoaderServiceImpl.java:368)
	at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:835)
	at org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory(HibernatePersistenceProvider.java:73)
	at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:55)
	at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:39)
	at net.nicholaswilliams.java.TestClass.createPersistenceUnit(TestClass.java:45)
	at net.nicholaswilliams.java.TestClass.main(TestClass.java:133)
Caused by: org.hibernate.MappingException: Could not determine type for: net.nicholaswilliams.java.SpecialType, at table: ComplexTable, for columns: [org.hibernate.mapping.Column(location)]
	at org.hibernate.mapping.SimpleValue.getType(SimpleValue.java:345)
	at org.hibernate.mapping.SimpleValue.isValid(SimpleValue.java:319)
	at org.hibernate.mapping.Property.isValid(Property.java:240)
	at org.hibernate.mapping.PersistentClass.validate(PersistentClass.java:483)
	at org.hibernate.mapping.RootClass.validate(RootClass.java:271)
	at org.hibernate.cfg.Configuration.validate(Configuration.java:1319)
	at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1808)
	at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform(EntityManagerFactoryBuilderImpl.java:844)
	... 8 more