/// <summary>
/// Gets the existing alternate key defined on a set of properties, or creates a new one if one is not
/// already defined.
/// </summary>
/// <param name="entityType"> The entity type to get or create the alternate key on. </param>
/// <param name="properties"> The properties that are used as the alternate key. </param>
/// <returns> The existing or newly created alternate key. </returns>
public static IMutableKey GetOrAddKey(
[NotNull] this IMutableEntityType entityType, [NotNull] IReadOnlyList <IMutableProperty> properties)
{
Check.NotNull(entityType, nameof(entityType));
return(entityType.FindKey(properties) ?? entityType.AddKey(properties));
}
/// <summary>
/// Gets the primary or alternate key that is defined on the given property. Returns null if no key is defined
/// for the given property.
/// </summary>
/// <param name="entityType"> The entity type to find the key on. </param>
/// <param name="property"> The property that the key is defined on. </param>
/// <returns> The key, or null if none is defined. </returns>
public static IMutableKey FindKey([NotNull] this IMutableEntityType entityType, [NotNull] IProperty property)
{
Check.NotNull(entityType, nameof(entityType));
return(entityType.FindKey(new[] { property }));
}
public static IMutableKey?FindKey([NotNull] this IMutableEntityType entityType, [NotNull] IReadOnlyProperty property)
=> entityType.FindKey(new[] { property });
