/// <summary>
/// Constructs the event payload.
/// </summary>
/// <param name="eventDefinition">The event definition.</param>
/// <param name="messageGenerator">A delegate that generates a log message for this event.</param>
/// <param name="navigation">The navigation.</param>
public NavigationEventData(
EventDefinitionBase eventDefinition,
Func <EventDefinitionBase, EventData, string> messageGenerator,
IReadOnlyNavigation navigation)
: base(eventDefinition, messageGenerator)
{
Navigation = navigation;
}
/// <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 static bool IsEmbedded(this IReadOnlyNavigation navigation) => !navigation.IsOnDependent && !navigation.ForeignKey.DeclaringEntityType.IsDocumentRoot();
public static IReadOnlyEntityType GetTargetType([NotNull] this IReadOnlyNavigation navigation)
=> Check.NotNull(navigation, nameof(navigation)).TargetEntityType;
public static bool IsEagerLoaded([NotNull] this IReadOnlyNavigation navigation)
=> Check.NotNull(navigation, nameof(navigation)).IsEagerLoaded;
public static IReadOnlyNavigation? FindInverse([NotNull] this IReadOnlyNavigation navigation)
=> Check.NotNull(navigation, nameof(navigation)).Inverse;
public static bool IsCollection([NotNull] this IReadOnlyNavigation navigation)
=> Check.NotNull(navigation, nameof(navigation)).IsCollection;
public static bool IsDependentToPrincipal([NotNull] this IReadOnlyNavigation navigation)
=> Check.NotNull(navigation, nameof(navigation)).IsOnDependent;
public static Navigation AsNavigation([NotNull] this IReadOnlyNavigation navigation, [NotNull][CallerMemberName] string methodName = "") => MetadataExtensions.AsConcreteMetadataType <IReadOnlyNavigation, Navigation>(navigation, methodName);
public static string ToDebugString(
[NotNull] this IReadOnlyNavigation navigation,
MetadataDebugStringOptions options,
int indent = 0)
{
var builder = new StringBuilder();
var indentString = new string(' ', indent);
builder.Append(indentString);
var singleLine = (options & MetadataDebugStringOptions.SingleLine) != 0;
if (singleLine)
{
builder.Append($"Navigation: {navigation.DeclaringEntityType.DisplayName()}.");
}
builder.Append(navigation.Name);
var field = navigation.GetFieldName();
if (field == null)
{
builder.Append(" (no field, ");
}
else if (!field.EndsWith(">k__BackingField", StringComparison.Ordinal))
{
builder.Append($" ({field}, ");
}
else
{
builder.Append(" (");
}
builder.Append(navigation.ClrType?.ShortDisplayName()).Append(")");
if (navigation.IsCollection)
{
builder.Append(" Collection");
}
builder.Append(navigation.IsOnDependent ? " ToPrincipal " : " ToDependent ");
builder.Append(navigation.TargetEntityType.DisplayName());
if (navigation.Inverse != null)
{
builder.Append(" Inverse: ").Append(navigation.Inverse.Name);
}
if (navigation.GetPropertyAccessMode() != PropertyAccessMode.PreferField)
{
builder.Append(" PropertyAccessMode.").Append(navigation.GetPropertyAccessMode());
}
if ((options & MetadataDebugStringOptions.IncludePropertyIndexes) != 0 &&
((Annotatable)navigation).IsReadOnly)
{
var indexes = ((INavigation)navigation).GetPropertyIndexes();
builder.Append(" ").Append(indexes.Index);
builder.Append(" ").Append(indexes.OriginalValueIndex);
builder.Append(" ").Append(indexes.RelationshipIndex);
builder.Append(" ").Append(indexes.ShadowIndex);
builder.Append(" ").Append(indexes.StoreGenerationIndex);
}
if (!singleLine && (options & MetadataDebugStringOptions.IncludeAnnotations) != 0)
{
builder.Append(navigation.AnnotationsToDebugString(indent + 2));
}
return(builder.ToString());
}
