public override AZTException CreateAZTException(DbEntityValidationException ex)
{
int validationErrorCount = 0;
string[] messages =
ex.EntityValidationErrors
.SelectMany(
dbEntityValidationResult =>
dbEntityValidationResult.ValidationErrors.Select(
dbValidationError =>
{
++validationErrorCount;
DbEntityEntry entityEntry = dbEntityValidationResult.Entry;
string entityTypeName = entityEntry.Entity.GetType().Name;
string propertyName = dbValidationError.PropertyName;
object originalValue =
entityEntry.State != EntityState.Added && entityEntry.State != EntityState.Detached
? entityEntry.OriginalValues[propertyName]
: null;
object currentValue =
entityEntry.State != EntityState.Deleted && entityEntry.State != EntityState.Detached
? entityEntry.CurrentValues[propertyName]
: null;
string errorMessage = dbValidationError.ErrorMessage;
return
(new StringBuilder()
.AppendLine()
.AppendLine($"{entityTypeName}.{propertyName}:")
.AppendLine($" OriginalValue=[{originalValue ?? "(null)"}]")
.AppendLine($" CurrentValue=[{currentValue ?? "(null)"}]")
.AppendLine($" ErrorMessage=[{errorMessage}]")
.ToString());
}
)
)
.ToArray();
int entitiesAffected = ex.EntityValidationErrors.Count();
var newException =
new AZTException(
String.Format(
"Validation failure: {0} {1}, {2} {3}.",
entitiesAffected,
entitiesAffected == 1 ? "entity" : "entities",
validationErrorCount,
validationErrorCount == 1 ? "error" : "errors"
),
ExceptionMessageCollection.Create(messages)
);
return(newException);
}
public virtual async Task <int> SaveChangesAsync()
{
try
{
SetTimestamps();
await InternalSaveChangesAsync();
int affectedRows = await Context.SaveChangesAsync();
return(affectedRows);
}
catch (Exception ex)
{
if (ExceptionHandlersByType.TryGetValue(ex.GetType(), out ExceptionHandler handler))
{
AZTException oloEx = handler.CreateAZTException(ex);
throw oloEx;
}
throw;
}
}
