/// <summary>
/// Validates entities by its DataAnnotations attributes
/// this is probably redundant, because the DataService has its own metadata and the changes are validated against it
/// </summary>
/// <typeparam name="TDB"></typeparam>
/// <param name="domainService"></param>
public static void ValidateEntities <TDB>(this EFDomainService <TDB> domainService)
where TDB : DbContext
{
IEnumerable <Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry> entries = from e in domainService.DB.ChangeTracker.Entries()
where e.State == EntityState.Added ||
e.State == EntityState.Modified
select e;
Dictionary <object, object> items = new Dictionary <object, object>();
StringBuilder sb = new StringBuilder();
foreach (Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry in entries)
{
object entity = entry.Entity;
ValidationContext validationContext = new ValidationContext(entity, domainService.ServiceContainer.ServiceProvider, items);
List <ValidationResult> results = new List <ValidationResult>();
if (Validator.TryValidateObject(entity, validationContext, results, true) == false)
{
foreach (ValidationResult result in results)
{
if (result != ValidationResult.Success)
{
if (sb.Length > 0)
{
sb.AppendLine();
}
sb.AppendFormat("Entity of type \"{0}\" in state \"{1}\" has validation errors:",
entity.GetType().Name, entry.State);
sb.AppendLine(result.ErrorMessage);
}
}
}
}
if (sb.Length > 0)
{
throw new ValidationException(sb.ToString());
}
}
public CsharpProvider(EFDomainService <TDB> owner) : base(owner)
{
this._db = owner.DB;
}
