/// <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 void DetectNavigationChange(InternalEntityEntry entry, INavigationBase navigationBase)
{
var snapshotValue = entry.GetRelationshipSnapshotValue(navigationBase);
var currentValue = entry[navigationBase];
var stateManager = entry.StateManager;
if (navigationBase.IsCollection)
{
var snapshotCollection = (IEnumerable?)snapshotValue;
var currentCollection = (IEnumerable?)currentValue;
var removed = new HashSet <object>(LegacyReferenceEqualityComparer.Instance);
if (snapshotCollection != null)
{
foreach (var entity in snapshotCollection)
{
removed.Add(entity);
}
}
var added = new HashSet <object>(LegacyReferenceEqualityComparer.Instance);
if (currentCollection != null)
{
foreach (var entity in currentCollection)
{
if (!removed.Remove(entity))
{
added.Add(entity);
}
}
}
if (added.Count > 0 ||
removed.Count > 0)
{
if (_loggingOptions.IsSensitiveDataLoggingEnabled)
{
if (navigationBase is INavigation navigation)
{
_logger.CollectionChangeDetectedSensitive(entry, navigation, added, removed);
}
else if (navigationBase is ISkipNavigation skipNavigation)
{
_logger.SkipCollectionChangeDetectedSensitive(entry, skipNavigation, added, removed);
}
}
else
{
if (navigationBase is INavigation navigation)
{
_logger.CollectionChangeDetected(entry, navigation, added, removed);
}
else if (navigationBase is ISkipNavigation skipNavigation)
{
_logger.SkipCollectionChangeDetected(entry, skipNavigation, added, removed);
}
}
stateManager.InternalEntityEntryNotifier.NavigationCollectionChanged(entry, navigationBase, added, removed);
}
}
else if (!ReferenceEquals(currentValue, snapshotValue))
{
Check.DebugAssert(navigationBase is INavigation, "Issue #21673. Non-collection skip navigations not supported.");
var navigation = (INavigation)navigationBase;
if (_loggingOptions.IsSensitiveDataLoggingEnabled)
{
_logger.ReferenceChangeDetectedSensitive(entry, navigation, snapshotValue, currentValue);
}
else
{
_logger.ReferenceChangeDetected(entry, navigation, snapshotValue, currentValue);
}
stateManager.InternalEntityEntryNotifier.NavigationReferenceChanged(entry, navigation, snapshotValue, currentValue);
}
}
private void DetectNavigationChange(InternalEntityEntry entry, INavigation navigation)
{
var snapshotValue = entry.GetRelationshipSnapshotValue(navigation);
var currentValue = entry[navigation];
var stateManager = entry.StateManager;
if (navigation.IsCollection())
{
var snapshotCollection = (IEnumerable)snapshotValue;
var currentCollection = (IEnumerable)currentValue;
var removed = new HashSet <object>(ReferenceEqualityComparer.Instance);
if (snapshotCollection != null)
{
foreach (var entity in snapshotCollection)
{
removed.Add(entity);
}
}
var added = new HashSet <object>(ReferenceEqualityComparer.Instance);
if (currentCollection != null)
{
foreach (var entity in currentCollection)
{
if (!removed.Remove(entity))
{
added.Add(entity);
}
}
}
if (added.Count > 0 ||
removed.Count > 0)
{
if (_loggingOptions.IsSensitiveDataLoggingEnabled)
{
_logger.CollectionChangeDetectedSensitive(entry, navigation, added, removed);
}
else
{
_logger.CollectionChangeDetected(entry, navigation, added, removed);
}
stateManager.InternalEntityEntryNotifier.NavigationCollectionChanged(entry, navigation, added, removed);
}
}
else if (!ReferenceEquals(currentValue, snapshotValue) &&
(!navigation.ForeignKey.IsOwnership ||
!navigation.IsDependentToPrincipal()))
{
if (_loggingOptions.IsSensitiveDataLoggingEnabled)
{
_logger.ReferenceChangeDetectedSensitive(entry, navigation, snapshotValue, currentValue);
}
else
{
_logger.ReferenceChangeDetected(entry, navigation, snapshotValue, currentValue);
}
stateManager.InternalEntityEntryNotifier.NavigationReferenceChanged(entry, navigation, snapshotValue, currentValue);
}
}
private void DetectNavigationChange(InternalEntityEntry entry, INavigationBase navigationBase)
{
var snapshotValue = entry.GetRelationshipSnapshotValue(navigationBase);
var currentValue = entry[navigationBase];
var stateManager = entry.StateManager;
if (navigationBase.IsCollection)
{
var snapshotCollection = (IEnumerable)snapshotValue;
var currentCollection = (IEnumerable)currentValue;
var removed = new HashSet <object>(LegacyReferenceEqualityComparer.Instance);
if (snapshotCollection != null)
{
foreach (var entity in snapshotCollection)
{
removed.Add(entity);
}
}
var added = new HashSet <object>(LegacyReferenceEqualityComparer.Instance);
if (currentCollection != null)
{
foreach (var entity in currentCollection)
{
if (!removed.Remove(entity))
{
added.Add(entity);
}
}
}
if (added.Count > 0 ||
removed.Count > 0)
{
if (_loggingOptions.IsSensitiveDataLoggingEnabled)
{
if (navigationBase is INavigation navigation)
{
_logger.CollectionChangeDetectedSensitive(entry, navigation, added, removed);
}
else if (navigationBase is ISkipNavigation skipNavigation)
{
_logger.SkipCollectionChangeDetectedSensitive(entry, skipNavigation, added, removed);
}
}
else
{
if (navigationBase is INavigation navigation)
{
_logger.CollectionChangeDetected(entry, navigation, added, removed);
}
else if (navigationBase is ISkipNavigation skipNavigation)
{
_logger.SkipCollectionChangeDetected(entry, skipNavigation, added, removed);
}
}
stateManager.InternalEntityEntryNotifier.NavigationCollectionChanged(entry, navigationBase, added, removed);
}
}
else if (!ReferenceEquals(currentValue, snapshotValue))
{
if (navigationBase is INavigation navigation)
{
if (!navigation.ForeignKey.IsOwnership ||
!navigation.IsOnDependent)
{
if (_loggingOptions.IsSensitiveDataLoggingEnabled)
{
_logger.ReferenceChangeDetectedSensitive(entry, navigation, snapshotValue, currentValue);
}
else
{
_logger.ReferenceChangeDetected(entry, navigation, snapshotValue, currentValue);
}
stateManager.InternalEntityEntryNotifier.NavigationReferenceChanged(entry, navigation, snapshotValue, currentValue);
}
}
else
{
throw new NotImplementedException("TODO: #19003 Non-collection skip navs");
}
}
}