Problems getting the old state of a Map / auditing

[Christopher Cudennec]

Hi Pinaki, hi everyone else ;)!

First of all thanks for pointing me to 'openjpa.RestoreState', Pinaki. Now I 
got the problem solved with the old state from the SaveFieldManager.

Unfortunately I have another issue with Maps. When I change the value of a Map 
entry I can't track the change because the old and the new Map contain the same 
values (although the Maps are not the same instance).

I have the following situation:

@Entity
public class Parent {

  ...
  
  @ElementCollection(fetch = FetchType.EAGER)
    private Map<String, StringAttribute> stringAttributes = new HashMap<String, 
StringAttribute>();

  ...
}


@Embeddable
public class StringAttribute {

  ...
  @Column
    private String value = new String();
  ...
}

Can you confirm that issue or do you have any idea what the problem could be?

Thanks a lot :),

Christopher
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