//I only have to override these two version of SaveChanges, as the other two versions call these
public override int SaveChanges(bool acceptAllChangesOnSuccess)
{
if (_bookUpdater == null)
{
//This handles the case where you don't want the automatic write to Cosmos, e.g. when doing bulk loading
return(base.SaveChanges(acceptAllChangesOnSuccess));
}
try
{
var thereAreChanges = _bookUpdater.FindBookChangesToProjectToNoSql(this);
//This stops ChangeTracker being called twice
ChangeTracker.AutoDetectChangesEnabled = false;
if (!thereAreChanges)
{
return(base.SaveChanges(acceptAllChangesOnSuccess));
}
return(_bookUpdater.CallBaseSaveChangesAndNoSqlWriteInTransaction(this,
() => base.SaveChanges(acceptAllChangesOnSuccess)));
}
finally
{
ChangeTracker.AutoDetectChangesEnabled = true;
}
}
//I only have to override these two version of SaveChanges, as the other two versions call these
public override int SaveChanges(bool acceptAllChangesOnSuccess)
{
try
{
var numBooksChanged = _bookUpdater?.FindNumBooksChanged(this) ?? 0;
//This stops ChangeTracker being called twice
ChangeTracker.AutoDetectChangesEnabled = false;
if (numBooksChanged == 0)
{
return(base.SaveChanges(acceptAllChangesOnSuccess));
}
return(_bookUpdater.CallBaseSaveChangesAndNoSqlWriteInTransaction(this, numBooksChanged,
() => base.SaveChanges(acceptAllChangesOnSuccess)));
}
finally
{
ChangeTracker.AutoDetectChangesEnabled = true;
}
}