public ChairEntity(IDataService dataService, IMessenger messanger, Model.Chair entity, long position)
{
DataService = dataService;
Messenger = messanger;
this.entity = entity;
this.position = position;
hasChanges = false;
UpdateHasChanges();
}
private void Chairs_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
if (DataService?.DBContext?.ChairToSpecializations != null)
{
switch (e.Action)
{
case NotifyCollectionChangedAction.Add:
foreach (var item in e.NewItems)
{
Model.Chair chair = item as Model.Chair;
if (chair != null)
{
Entity.Chairs.Add(chair);
}
}
break;
case NotifyCollectionChangedAction.Remove:
foreach (var item in e.OldItems)
{
Model.Chair chair = item as Model.Chair;
if (chair != null)
{
Entity.Chairs.Remove(chair);
}
}
break;
case NotifyCollectionChangedAction.Replace:
for (int index = 0; index < e.NewItems.Count; index++)
{
Model.Chair oldChair = e.OldItems[index] as Model.Chair;
Model.Chair newChair = e.NewItems[index] as Model.Chair;
Entity.Chairs.Remove(oldChair);
Entity.Chairs.Add(newChair);
}
break;
case NotifyCollectionChangedAction.Reset:
Entity.Chairs.Clear();
break;
}
}
SetInfoAboutModify();
UpdateHasChanges();
}
private void CreateEntity()
{
try
{
if (DataService?.DBContext?.Chairs != null && DataService?.DBContext.Faculties != null)
{
Model.Chair newEntity = DataService?.DBContext?.Chairs?.Create();
if (newEntity != null)
{
DataService?.DBContext?.Chairs?.Add(newEntity);
Entity = newEntity;
Active = true;
Model.Faculty faculty = DataService.DBContext.Faculties.FirstOrDefault();
FacultyId = faculty?.Id ?? 0;
UserModify = DataService?.UserName;
DateTimeOffset now = DateTimeOffset.Now;
Entity.Created = now;
OnPropertyChanged(nameof(Created));
Entity.LastModify = now;
OnPropertyChanged(nameof(LastModify));
}
}
}
catch (EntityException e)
{
OnEntityException(e);
}
catch (DbEntityValidationException e)
{
OnDbEntityValidationException(e);
}
catch (DbUpdateException e)
{
OnDbUpdateException(e);
}
}
public ChairEntity(IDataService dataService, IMessenger messanger, Model.Chair entity)
: this(dataService, messanger, entity, 0)
{
}
private void Chairs_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
if (DataService != null && DataService.DBContext != null &&
DataService.DBContext.ChairToSpecializations != null)
{
switch (e.Action)
{
case NotifyCollectionChangedAction.Add:
foreach (var item in e.NewItems)
{
Model.Chair chair = item as Model.Chair;
if (chair != null)
{
ChairToSpecialization relation = DataService.DBContext.ChairToSpecializations.Create();
relation.Chair = chair;
relation.ChairId = chair.Id;
relation.Specialization = Entity;
relation.SpecializationId = Entity.Id;
relation.Active = true;
DateTimeOffset now = DateTimeOffset.Now;
relation.Created = now;
relation.LastModify = now;
relation.UserModify = DataService?.UserName;
}
}
break;
case NotifyCollectionChangedAction.Remove:
foreach (var item in e.OldItems)
{
Model.Chair chair = item as Model.Chair;
if (chair != null)
{
ChairToSpecialization removedItem =
Entity.ChairToSpecializations.FirstOrDefault(x => x.Chair == chair);
if (removedItem != null)
{
Entity.ChairToSpecializations.Remove(removedItem);
}
}
}
break;
case NotifyCollectionChangedAction.Replace:
for (int index = 0; index < e.NewItems.Count; index++)
{
Model.Chair oldChair = e.OldItems[index] as Model.Chair;
Model.Chair newChair = e.NewItems[index] as Model.Chair;
if (oldChair != null && newChair != null)
{
ChairToSpecialization replacedItem =
Entity.ChairToSpecializations.FirstOrDefault(x => x.Chair == oldChair);
if (replacedItem != null)
{
replacedItem.Chair = newChair;
replacedItem.ChairId = newChair.Id;
replacedItem.LastModify = DateTimeOffset.Now;
replacedItem.UserModify = DataService?.UserName;
}
}
}
break;
case NotifyCollectionChangedAction.Reset:
Entity.ChairToSpecializations.Clear();
break;
}
}
UpdateHasChanges();
}
