Associate objects via a Map of Sets

evantoliopoulos · **Posted:** Mon Aug 29, 2005 9:45 pm

Hi,

Does anyone know how to associate, in Hibernate, to two classes via a map of sets:

SortedMap<key,SortedSet>

I have searched the forums and read all the Hibernate doco, but could not find such a thing explained.

To give some context:

Code:

+----------+      has       +------+   departs from   +---------+
|DealBundle|----------------| Deal |------------------| Airport |
+----------+ 1         0..* +------+ 1              1 +---------+
                                |1                         | 1
                                |       arrives at         |
                                +--------------------------+

I have an object, call it a DealBundle, which has a whole lot of Deal objects. The Deal objects are kept in multiple SortedSets which in turn are in a Map keyed by the departure Airport object.

Code:

public class DealBundle {

   public long    id;
   
   public SortedMap<Airport,SortedSet<Deal>>
             dealsByDepartureAirport;
}

public class Deal {

   public long    id;
   public Airport departureAirport;
   public Airport arrivalAirport;
   public float   totalPrice;
}

public class Airport {

   public long    id;
   public String  IATACode;
   public String  name;
}

I will appreciate any and every bit advice,
Thanks,
Evan

aamir · **Joined:** Sun Oct 03, 2004 9:00 am **Posts:** 7

I have the same problem. I want to use a map of sets. Can somebody help me/us ??

Thanx
Muhammad Aamir

emmanuel · **Posted:** Tue Sep 06, 2005 7:09 am

collections of collections is not supported.
Collection of entities containing a collections is supported

evantoliopoulos · **Posted:** Sat Sep 24, 2005 11:47 pm

i thought this may be the case
thanks,
evan.