Hi,

I would like to know how to do the mapping for NavigableMap<K,V>?

I have done the mapping for SortedMap<K, V>. But don't know how to do it for NavigableMap<K,V>.

Any help will be appreciated? When i tried to replace SortedMap<K,V> with NavigableMap<K,V> , i am getting the following error.

ERROR BasicPropertyAccessor:98 - expected type: java.util.NavigableMap, actual value: org.hibernate.collection.PersistentSortedMap

There seems i need to use something different for mapping a NavigableMap, like i used the sort attribute and order-by attribute of the Map tag to convert it from Map<K,V> to SortedMap<K,V>.

Similarly what should i do to map a NavigableMap<K,V>? Please explain.

Thanks,
Amjath Sharief

I think for this you will have to implement a org.hibernate.usertype.UserCollectionType and then specify the collection-type attribute in the map tag.

NavigableMap is a new kind of map since Java 6. Hibernate is not designed for Java 6, yet, so I would not use it in my entities until Java 6 is supported by hibernate.

I am however wondering how Hibernate will be able to incorporate NavigableMap/NavigableSet and remain backward compatible.
For Hibernate's PersistentSortedMap:
<map name="something" sort="natural">
Now would we expect future 1.6 collections embracing Hibernate to give a new PersistentNavigableMap for the same mapping?

So . . . we're two years on and still no support for NavigableMap?