Hi Thomas: I try to use the DMap Implementation. Like this: public class SimpleOrgForMap extends PersistentObject{
private DMap users ; public void addUsers(SimpleUserForMap pUser){ System.out.println("***************Add Users For MapCollection."); if (users == null) { users = new DMapImpl(); } this.users.put(pUser.getOID(),pUser); } public DMap getUsers(){ System.out.println("***************Get Users For MapCollection."); return this.users; } public void setUsers(DMap pMembers){ this.users = pMembers; } public SimpleOrgForMap() { } } But I don't know how to set 'collection-class' attribute of collection-descriptor element. Must I set the attribute? Thanks. > Hi ½²³Õ¦Ü, > > Why don't you simply use the ODMG DMap Implementation? > This will save you a lot of work! > > Thomas > > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]