private static IReadOnlyList <string>?FindCandidateDependentPropertiesThroughNavigation(
IConventionForeignKeyBuilder relationshipBuilder,
bool pointsToPrincipal)
{
var navigation = pointsToPrincipal
? relationshipBuilder.Metadata.DependentToPrincipal
: relationshipBuilder.Metadata.PrincipalToDependent !;
var navigationFkAttribute = navigation != null
? GetForeignKeyAttribute(navigation)
: null;
if (navigationFkAttribute == null)
{
return(null);
}
var properties = navigationFkAttribute.Name.Split(',').Select(p => p.Trim()).ToList();
if (properties.Any(p => string.IsNullOrWhiteSpace(p) || p == navigation !.Name))
{
throw new InvalidOperationException(
CoreStrings.InvalidPropertyListOnNavigation(
navigation !.Name, navigation.DeclaringEntityType.DisplayName(), navigationFkAttribute.Name));
}
var navigationPropertyTargetType =
navigation !.DeclaringEntityType.GetRuntimeProperties()[navigation.Name].PropertyType;
var otherNavigations = navigation.DeclaringEntityType.GetRuntimeProperties().Values
.Where(p => p.PropertyType == navigationPropertyTargetType && p.GetSimpleMemberName() != navigation.Name)
.OrderBy(p => p.GetSimpleMemberName());
foreach (var propertyInfo in otherNavigations)
{
var attribute = GetAttribute <ForeignKeyAttribute>(propertyInfo);
if (attribute?.Name == navigationFkAttribute.Name)
{
throw new InvalidOperationException(
CoreStrings.MultipleNavigationsSameFk(
navigation.DeclaringEntityType.DisplayName(),
attribute.Name,
$"'{navigation.Name}', '{propertyInfo.Name}'"));
}
}
return(properties);
}