static OrderBySetting FindProperties(IEdmEntityType entity)
            {
                var propertyNames = entity.Key().Any() switch
                {
                    true => entity.Key().Select(k => k.Name),
                    false => entity.StructuralProperties()
                    .Where(p => p.Type.IsPrimitive() && !p.Type.IsStream())
                    .Select(p => p.Name)
                    .OrderBy(n => n)
                    .Take(1)
                };
                var orderBySettings = new OrderBySetting();

                propertyNames.Aggregate(orderBySettings, (settings, name) =>
                {
                    if (settings.Name is null)
                    {
                        settings.Name = name;
                        return(settings);
                    }
                    settings.ThenBy = new() { Name = name };
                    return(settings.ThenBy);
                });
                return(orderBySettings.Name is null ? null : orderBySettings);
            }
        }
    }
コード例 #2
0
        private static Expression GetDefaultOrderByCall(this Expression expression, OrderBySetting settings)
        {
            return(settings.ThenBy is null
                ? GetMethodCall()
                : GetMethodCall().GetDefaultThenByCall(settings.ThenBy));

            Expression GetMethodCall() =>
            expression.GetOrderByCall(settings.Name, nameof(Queryable.OrderBy));
        }