/// <summary>
/// This is an internal API that supports the Entity Framework Core infrastructure and not subject to
/// the same compatibility standards as public APIs. It may be changed or removed without notice in
/// any release. You should only use it directly in your code with extreme caution and knowing that
/// doing so can result in application failures when updating to a new Entity Framework Core release.
/// </summary>
protected virtual Index CreateIndex(
[NotNull] IReadOnlyList <Property> properties, bool unique, [NotNull] InternalEntityTypeBuilder entityTypeBuilder)
{
foreach (var key in entityTypeBuilder.Metadata.GetKeys())
{
if (AreIndexedBy(properties, unique, key.Properties, coveringIndexUniqueness: true))
{
return(null);
}
}
foreach (var existingIndex in entityTypeBuilder.Metadata.GetIndexes())
{
if (AreIndexedBy(properties, unique, existingIndex.Properties, existingIndex.IsUnique))
{
return(null);
}
}
var indexBuilder = entityTypeBuilder.HasIndex(properties, ConfigurationSource.Convention);
if (unique)
{
indexBuilder?.IsUnique(true, ConfigurationSource.Convention);
}
return(indexBuilder?.Metadata);
}
/// <summary>
/// This is an internal API that supports the Entity Framework Core infrastructure and not subject to
/// the same compatibility standards as public APIs. It may be changed or removed without notice in
/// any release. You should only use it directly in your code with extreme caution and knowing that
/// doing so can result in application failures when updating to a new Entity Framework Core release.
/// </summary>
public virtual InternalIndexBuilder Attach([NotNull] InternalEntityTypeBuilder entityTypeBuilder)
{
var properties = entityTypeBuilder.GetActualProperties(Metadata.Properties, null);
if (properties == null)
{
return(null);
}
var newIndexBuilder = Metadata.Name == null
? entityTypeBuilder.HasIndex(properties, Metadata.GetConfigurationSource())
: entityTypeBuilder.HasIndex(properties, Metadata.Name, Metadata.GetConfigurationSource());
newIndexBuilder?.MergeAnnotationsFrom(Metadata);
var isUniqueConfigurationSource = Metadata.GetIsUniqueConfigurationSource();
if (isUniqueConfigurationSource.HasValue)
{
newIndexBuilder?.IsUnique(Metadata.IsUnique, isUniqueConfigurationSource.Value);
}
return(newIndexBuilder);
}
