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:
{noformat}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 comment deleted )
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{noformat}
*head desk *
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