internal static IEnumerable <PropertyInfo> UnionNavPropsWithFKs
(this IEnumerable <PropertyInfo> navProps,
EntityTypeInfo typeInfo,
Type attributeToFilter,
Func <ForeignKeyProperty, bool> fkFilter,
out List <ForeignKeyProperty> FKs)
{
FKs = typeInfo
.GetForeignKeysWithAttribute(attributeToFilter)
.Where(fkFilter ?? (fk => true))
.ToList();
//add attributed fks that may have been set on scalar properties
navProps = navProps
.Union(FKs.Select(fk => fk.NavigationProperty))
.OrderNavs(typeInfo);
return(navProps);
}
internal static IEnumerable <PropertyInfo> OrderNavs(this IEnumerable <PropertyInfo> props,
EntityTypeInfo typeInfo)
{
//order them obeying explicit column order
var columnFKs = typeInfo.ColumnAttributeFKs;
return(props
.OrderBy(p => p.IsDefined(Defaults.ColumnType)
? (p.GetCustomAttribute(Defaults.ColumnType) as ColumnAttribute).Order
: columnFKs.Where(fk =>
fk.NavigationProperty == p &&
fk.ScalarProperty?.IsDefined(Defaults.ColumnType) == true)
.Select(fk =>
(int?)(fk.ScalarProperty.GetCustomAttribute(Defaults.ColumnType) as ColumnAttribute)
.Order)
.FirstOrDefault() ?? 0) //first order by explicit column attribute
.ThenBy(p => typeInfo.AllProperties.IndexOf(p)) //then by how they appear on the class.
);
}
