/// <summary>
/// Adds a new alternate key to this entity type.
/// </summary>
/// <param name="entityType"> The entity type to add the alternate key to. </param>
/// <param name="property"> The property to use as an alternate key. </param>
/// <returns> The newly created key. </returns>
public static IMutableKey AddKey(
[NotNull] this IMutableEntityType entityType, [NotNull] IMutableProperty property)
{
Check.NotNull(entityType, nameof(entityType));
return(entityType.AddKey(new[] { property }));
}
/// <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));
}
private static void CloneKeys(IReadOnlyEntityType sourceEntityType, IMutableEntityType targetEntityType)
{
foreach (var key in sourceEntityType.GetDeclaredKeys())
{
var clonedKey = targetEntityType.AddKey(
key.Properties.Select(p => targetEntityType.FindProperty(p.Name)).ToList());
if (key.IsPrimaryKey())
{
targetEntityType.SetPrimaryKey(clonedKey.Properties);
}
key.GetAnnotations().ForEach(annotation => clonedKey[annotation.Name] = annotation.Value);
}
}
protected IMutableKey CreateKey(IMutableEntityType entityType, int startingPropertyIndex = -1, int propertyCount = 1)
{
if (startingPropertyIndex == -1)
{
startingPropertyIndex = entityType.PropertyCount() - 1;
}
var keyProperties = new IMutableProperty[propertyCount];
for (var i = 0; i < propertyCount; i++)
{
keyProperties[i] = entityType.GetOrAddProperty("P" + (startingPropertyIndex + i), typeof(int?));
keyProperties[i].IsNullable = false;
}
return(entityType.AddKey(keyProperties));
}