db4o

ExtObjectSet.GetIDs Method 

returns an array of internal IDs that correspond to the contained objects.

long[] GetIDs();

Remarks

returns an array of internal IDs that correspond to the contained objects.

See Also

ExtObjectSet Interface | com.db4o.ext Namespace | com.db4o.ext.ExtObjectContainer.GetID | com.db4o.ext.ExtObjectContainer.GetByID