public static PropertyIndexes CalculateIndexes([NotNull] this IEntityType entityType, [NotNull] IPropertyBase propertyBase)
{
var index = 0;
var shadowIndex = 0;
var originalValueIndex = 0;
var relationshipIndex = 0;
var storeGenerationIndex = 0;
var baseCounts = entityType.BaseType?.GetCounts();
if (baseCounts != null)
{
index = baseCounts.PropertyCount;
shadowIndex = baseCounts.ShadowCount;
originalValueIndex = baseCounts.OriginalValueCount;
relationshipIndex = baseCounts.RelationshipCount;
storeGenerationIndex = baseCounts.StoreGeneratedCount;
}
PropertyIndexes callingPropertyIndexes = null;
foreach (var property in entityType.GetDeclaredProperties())
{
var indexes = new PropertyIndexes(
index++,
property.RequiresOriginalValue() ? originalValueIndex++ : -1,
property.IsShadowProperty ? shadowIndex++ : -1,
property.IsKeyOrForeignKey() ? relationshipIndex++ : -1,
MayBeStoreGenerated(property) ? storeGenerationIndex++ : -1);
TrySetIndexes(property, indexes);
if (propertyBase == property)
{
callingPropertyIndexes = indexes;
}
}
foreach (var navigation in entityType.GetDeclaredNavigations())
{
var indexes = new PropertyIndexes(index++, -1, -1, relationshipIndex++, -1);
TrySetIndexes(navigation, indexes);
if (propertyBase == navigation)
{
callingPropertyIndexes = indexes;
}
}
foreach (var derivedType in entityType.GetDirectlyDerivedTypes())
{
derivedType.CalculateIndexes(propertyBase);
}
return(callingPropertyIndexes);
}
private static void TrySetIndexes(IPropertyBase propertyBase, PropertyIndexes indexes)
{
var indexAccessor = propertyBase as IPropertyIndexesAccessor;
if (indexAccessor != null)
{
indexAccessor.Indexes = indexes;
}
}