public override async Task <int> SaveChangesAsync(bool acceptAllChangesOnSuccess, CancellationToken cancellationToken = new CancellationToken())
{
if (_bookUpdater == null)
{
//This handles the case where you don't want the automatic write to Cosmos, e.g. when doing bulk loading
return(await base.SaveChangesAsync(acceptAllChangesOnSuccess, cancellationToken));
}
try
{
var thereAreChanges = _bookUpdater.FindBookChangesToProjectToNoSql(this);
//This stops ChangeTracker being called twice
ChangeTracker.AutoDetectChangesEnabled = false;
if (!thereAreChanges)
{
return(await base.SaveChangesAsync(acceptAllChangesOnSuccess, cancellationToken));
}
return(await _bookUpdater.CallBaseSaveChangesWithNoSqlWriteInTransactionAsync(this,
() => base.SaveChangesAsync(acceptAllChangesOnSuccess, cancellationToken)));
}
finally
{
ChangeTracker.AutoDetectChangesEnabled = true;
}
}
public override async Task <int> SaveChangesAsync(bool acceptAllChangesOnSuccess, CancellationToken cancellationToken = default(CancellationToken))
{
try
{
var numBooksChanged = _bookUpdater?.FindNumBooksChanged(this) ?? 0;
//This stops ChangeTracker being called twice
ChangeTracker.AutoDetectChangesEnabled = false;
if (numBooksChanged == 0)
{
return(await base.SaveChangesAsync(acceptAllChangesOnSuccess, cancellationToken));
}
return(await _bookUpdater.CallBaseSaveChangesWithNoSqlWriteInTransactionAsync(this, numBooksChanged,
() => base.SaveChangesAsync(acceptAllChangesOnSuccess, cancellationToken)));
}
finally
{
ChangeTracker.AutoDetectChangesEnabled = true;
}
}