/// <summary>
/// Method to validate the containig entity right beforethe entity's delete action will take place.
/// </summary>
/// <param name="involvedEntity">The involved entity.</param>
public override void ValidateEntityBeforeDelete(IEntityCore involvedEntity)
{
// variable to collect errors
StringBuilder sbExceptionMessage = new StringBuilder();
// customer to validate. Cast depends upon the entity you are validating.
CustomerEntity toValidate = (CustomerEntity)involvedEntity;
#region Check validation rules.
/// Can't delete a customer that has orders related.
/// Note: this assumes that the orders have been prefetched with the involvedEntity,
/// so we can avoid the trip to DB and check this rule before DB throws an error.
if (toValidate.Orders.Count != 0)
{
// add the error info to the message
sbExceptionMessage.Append(CUSTOMER_INVALID_DELETE_ERROR_MESSAGE + DELIMITER);
}
// -- add more validations --
// ...
#endregion
// get the errors collected
string strExceptionMessage = sbExceptionMessage.ToString();
// Do exist any break rule in this entity?
if (strExceptionMessage != string.Empty)
{
// set error info so we can access that outside
toValidate.SetEntityError(strExceptionMessage);
// throws an exception with all the breaking rules info
throw new ORMEntityValidationException(strExceptionMessage, toValidate);
}
// if everything is ok, we reach this point, so lets the base class do its work
base.ValidateEntityBeforeDelete(involvedEntity);
}
