public Appointment[] getAppointments(AbstractConnection cxn)
 {
     IEncounterDao dao = (IEncounterDao)cxn.getDao(DAO_NAME);
     if (dao == null)
     {
         return null;
     }
     return dao.getAppointments();
 }

 public InpatientStay[] getAdmissions(AbstractConnection cxn)
 {
     IEncounterDao dao = (IEncounterDao)cxn.getDao(DAO_NAME);
     if (dao == null)
     {
         return null;
     }
     return dao.getAdmissions();
 }

 public Appointment[] getAppointments(AbstractConnection cxn, int pastDays, int futureDays)
 {
     IEncounterDao dao = (IEncounterDao)cxn.getDao(DAO_NAME);
     if (dao == null)
     {
         return null;
     }
     return dao.getAppointments(pastDays,futureDays);
 }

 public void addConnection(string sitecode, AbstractConnection cxn)
 {
     lock (_cxns)
     {
         if (!_cxns.ContainsKey(sitecode))
         {
             _cxns.Add(sitecode, new List<AbstractConnection>());
         }
         _cxns[sitecode].Add(cxn);
     }
 }

 public string[] ddrLister(
     AbstractConnection cxn,
     string file,
     string iens,
     string flds,
     string flags,
     string maxRex,
     string from,
     string part,
     string xref,
     string screen,
     string identifier)
 {
     VistaToolsDao dao = new VistaToolsDao(cxn);
     return dao.ddrLister(file, iens, flds, flags, maxRex, from, part, xref, screen, identifier);
 }

 public override IConsultDao getConsultDao(AbstractConnection cxn)
 {
     return new VistaConsultDao(cxn);
 }

 public override IChemHemDao getChemHemDao(AbstractConnection cxn)
 {
     return new VistaChemHemDao(cxn);
 }

 public override IClinicalDao getClinicalDao(AbstractConnection cxn)
 {
     return new VistaClinicalDao(cxn);
 }

 public override IUserDao getUserDao(AbstractConnection cxn)
 {
     return new VistaUserDao(cxn);
 }

 public override IVitalsDao getVitalsDao(AbstractConnection cxn)
 {
     return new VistaVitalsDao(cxn);
 }

 public override ILocationDao getLocationDao(AbstractConnection cxn)
 {
     return new VistaLocationDao(cxn);
 }

 public abstract override bool skipThisConnection(AbstractConnection c);

 public override IOrdersDao getOrdersDao(AbstractConnection cxn)
 {
     return new VistaOrdersDao(cxn);
 }

 public override IPharmacyDao getPharmacyDao(AbstractConnection cxn)
 {
     return new VistaPharmacyDao(cxn);
 }

 public abstract object getDao(string daoName, AbstractConnection c);

 public override IEncounterDao getEncounterDao(AbstractConnection cxn)
 {
     return new VistaEncounterDao(cxn);
 }

 public ConnectionSet(AbstractConnection c)
 {
     myCxns = new Dictionary<string, AbstractConnection>();
     myCxns.Add(c.DataSource.SiteId.Id, c);
     baseSiteId = c.DataSource.SiteId.Id;
 }

 public override ILabsDao getLabsDao(AbstractConnection cxn)
 {
     return new VistaLabsDao(cxn);
 }

 public override IToolsDao getToolsDao(AbstractConnection cxn)
 {
     return new VistaToolsDao(cxn); ;
 }

 public override INoteDao getNoteDao(AbstractConnection cxn)
 {
     return new VistaNoteDao(cxn);
 }