public static RetailOutlet AddTenantToDatabaseWithSaveChanges(string name, TenantBase parent, CompanyDbContext context)
{
var newTenant = new RetailOutlet(name, parent);
TenantBase.AddTenantToDatabaseWithSaveChanges(newTenant, context);
return(newTenant);
}
public static SubGroup AddTenantToDatabaseWithSaveChanges(string name, TenantBase parent, CompanyDbContext context)
{
var newTenant = new SubGroup(name, parent);
TenantBase.AddTenantToDatabaseWithSaveChanges(newTenant, context);
return(newTenant);
}
public static Company AddTenantToDatabaseWithSaveChanges(string name, PaidForModules allowedPaidForModules,
CompanyDbContext context)
{
var newTenant = new Company(name, allowedPaidForModules);
TenantBase.AddTenantToDatabaseWithSaveChanges(newTenant, context);
return(newTenant);
}
//----------------------------------------------------
// public methods
public void MoveToNewParent(TenantBase newParent, DbContext context)
{
void SetKeyExistingHierarchy(TenantBase existingTenant)
{
existingTenant.SetDataKeyFromHierarchy();
if (existingTenant.Children == null)
{
context.Entry(existingTenant).Collection(x => x.Children).Load();
}
if (!existingTenant._children.Any())
{
return;
}
foreach (var tenant in existingTenant._children)
{
SetKeyExistingHierarchy(tenant);
}
}
if (this is Company)
{
throw new ApplicationException($"You cannot move a Company.");
}
if (newParent == null)
{
throw new ApplicationException($"The parent cannot be null.");
}
if (newParent.ParentItemId == 0)
{
throw new ApplicationException($"The parent {newParent.Name} must be already in the database.");
}
if (newParent == this)
{
throw new ApplicationException($"You can't be your own parent.");
}
if (context.Entry(this).State == EntityState.Detached)
{
throw new ApplicationException($"You can't use this method to add a new tenant.");
}
if (context.Entry(newParent).State == EntityState.Detached)
{
throw new ApplicationException($"The parent must already be in the database.");
}
Parent._children?.Remove(this);
Parent = newParent;
//Now change the data key for all the hierarchy from this entry down
SetKeyExistingHierarchy(this);
}
protected static void AddTenantToDatabaseWithSaveChanges(TenantBase newTenant, CompanyDbContext context)
{
if (newTenant == null)
{
throw new ArgumentNullException(nameof(newTenant));
}
if (!(newTenant is Company))
{
if (newTenant.Parent == null)
{
throw new ApplicationException($"The parent cannot be null in type {newTenant.GetType().Name}.");
}
if (newTenant.Parent.ParentItemId == 0)
{
throw new ApplicationException($"The parent {newTenant.Parent.Name} must be already in the database.");
}
}
if (context.Entry(newTenant).State != EntityState.Detached)
{
throw new ApplicationException($"You can't use this method to add a tenant that is already in the database.");
}
//We have to do this request using a transaction to make sure the DataKey is set properly
using (var transaction = context.Database.BeginTransaction())
{
//set up the backward link (if Parent isn't null)
newTenant.Parent?._children.Add(newTenant);
context.Add(newTenant); //also need to add it in case its the company
// Add this to get primary key set
context.SaveChanges();
//Now we can set the DataKey
newTenant.SetDataKeyFromHierarchy();
context.SaveChanges();
transaction.Commit();
}
}
protected TenantBase(string name, TenantBase parent)
{
Name = name;
Parent = parent;
_children = new HashSet <TenantBase>(); //Used when creating a new version - not used by EF Core
}
} //Needed by EF Core
private RetailOutlet(string name, TenantBase parent) : base(name, parent)
{
}
} //Needed by EF Core
private SubGroup(string name, TenantBase parent) : base(name, parent)
{
}