private void Add(TrackableEntity entity)
{
if (entity == null)
{
return;
}
this.items.Add(entity);
}
// All possible combinations here!
// Insert --> Update
// --> Delete
//
// Update --> Delete
// Update --> Update
//
// Some magic here!!
public void ProcessEntity <T>(object entity, TrackableEntity.Operation operation) where T : class
{
if (entity == null)
{
return;
}
if (operation == TrackableEntity.Operation.Unknown)
{
return;
}
Type classType = typeof(T);
Type entityType = entity.GetType();
// Paranoic!
if (!classType.Equals(entityType))
{
return;
}
bool contains = this.Contains(entity);
if (!contains)
{
this.items.Add(new TrackableEntity(entity, operation));
return;
}
var rst = this.items.Where(x => x.CompareTo(entity)).ToList();
if (rst == null)
{
return;
}
if (rst.Count != 1)
{
return;
}
TrackableEntity thisEntity = rst[0] as TrackableEntity;
if (operation == TrackableEntity.Operation.Delete)
{
if (thisEntity.OperationType == TrackableEntity.Operation.Insert)
{
this.items.Remove(thisEntity);
return;
}
if (thisEntity.OperationType == TrackableEntity.Operation.Update)
{
this.items.Remove(thisEntity);
this.items.Add(new TrackableEntity(entity, operation));
return;
}
}
if (operation == TrackableEntity.Operation.Update)
{
if (thisEntity.OperationType == TrackableEntity.Operation.Insert)
{
this.items.Remove(thisEntity);
this.items.Add(new TrackableEntity(entity, TrackableEntity.Operation.Insert));
return;
}
if (thisEntity.OperationType == TrackableEntity.Operation.Update)
{
this.items.Remove(thisEntity);
this.items.Add(new TrackableEntity(entity, operation));
return;
}
}
}