Hello,

I'm new to your issue tracking system and at first
I would like to thank you for your years of work on hibernate.

I have JPA-Entities with composite primary keys ( and therefore composite foreign keys ).
They consist of (Id : String, ClientId : String)
When trying to audit a relation to another entity with envers,
Hibernate's

BasicBinder

fails with a ClassCastException on trying to setting Id-Class instance to ClientId/Id-values, when trying to persist to the audit table.
After spending a few hours of work, I found out, that in class
org.hibernate.envers.internal.entities.mapper.id.SingleIdMapper.mapToMapFromEntity(...)

SingleIdMapper.mapToMapFromEntity(...)	@Override
	public void mapToMapFromEntity(Map<String, Object> data, Object obj) {
		if ( obj == null ) {
			data.put( propertyData.getName(), null );
		}
		else {
			if ( obj instanceof HibernateProxy ) {
				final HibernateProxy hibernateProxy = (HibernateProxy) obj;
				data.put( propertyData.getName(), hibernateProxy.getHibernateLazyInitializer().getIdentifier() );
			}
			else {
				final Getter getter = ReflectionTools.getGetter( obj.getClass(), propertyData );
				data.put( propertyData.getName(), getter.get( obj ) );
			}
		}
	}

When trying to use