Hibernate Envers fails with @Converter and AttributeConverter (JPA 2.1)

Question

I am using Hibernate 4.3.4 with Envers, and MySql 5.6.

Without a JPA 2.1 converter, the Party entity below fails at Configuration.buildSessionFactory() as it should, since Hibernate doesn't know what to do with the Name class:

@Entity
@Audited
public class Party
    {
    protected Name name;
    ...
    }

The exception is:

org.hibernate.MappingException: 
  Could not determine type for: 
    ModuloADM.Party.Name, 
    at table: Party, for columns: [org.hibernate.mapping.Column(name)]

To fix this, I then add this converter:

@Converter (autoApply=true)
public class NametoStringConverter
      implements AttributeConverter<Name, String>
    { ... }

And the exception now changes to:

org.hibernate.MappingException: 
  Could not determine type for: 
    BasicType adapter for AttributeConverter<Name,String>, 
    at table: History_Party, for columns: [org.hibernate.mapping.Column(name)]

This is now failing at the Envers auditing table for the Party entity. Note that History_Party is the name of the audit table, as chosen by config.setProperty("org.hibernate.envers.audit_table_prefix", "History_").

The complete stacktrace is:

org.hibernate.MappingException: 
  Could not determine type for: 
    BasicType adapter for AttributeConverter<Name,String>, 
    at table: History_Party, for columns: [org.hibernate.mapping.Column(name)]

  at org.hibernate.mapping.SimpleValue.getType(SimpleValue.java:336)
    at org.hibernate.tuple.PropertyFactory.buildEntityBasedAttribute(PropertyFactory.java:246)
    at org.hibernate.tuple.entity.EntityMetamodel.<init>(EntityMetamodel.java:227)
    at org.hibernate.persister.entity.AbstractEntityPersister.<init>(AbstractEntityPersister.java:520)
    at org.hibernate.persister.entity.SingleTableEntityPersister.<init>(SingleTableEntityPersister.java:148)
    at sun.reflect.GeneratedConstructorAccessor43.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:525)
    at org.hibernate.persister.internal.PersisterFactoryImpl.create(PersisterFactoryImpl.java:163)
    at org.hibernate.persister.internal.PersisterFactoryImpl.createEntityPersister(PersisterFactoryImpl.java:135)
    at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:401)
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1857)

How do I solve this? Is Envers even compatible with AttributeConverters?

Answer 1

Try using @Convert in Party Entity. Sometimes autoApply flag will not work

@Entity
@Audited
public class Party
    {
    @Convert(converter = NametoStringConverter.class)
    protected Name name;
    ...
    }