public E save(E entity)
{
/*If there is an already persisted and deactivated entity
* with a matching business identifier, then simply reactivate that entity*/
E equalEntity = findDeactivatedEntityWithSameBusinessIdentifier(entity);
if (equalEntity != null)
{
equalEntity.activate();
dbContext.Entry(equalEntity).State = EntityState.Modified;
dbContext.SaveChanges();
return(equalEntity);
}
//*Avoid adding entities with the same business identifier
//*A unique index could also work, but if the business identifier is a string,
//*it's harder to ensure that field is case insensitive
if (find(entity.id()) != null)
{
return(null);
}
dbContext.Set <E>().Add(entity);
dbContext.SaveChanges();
return(entity);
}
public CustomizedProductSerialNumber increment()
{
CustomizedProductSerialNumber serialNumber = findSerialNumber();
serialNumber.incrementSerialNumber();
dbContext.Entry(serialNumber).State = EntityState.Modified;
dbContext.SaveChanges();
return(serialNumber);
}