private object TryFindPrincipal(StateManager stateManager, INavigation navigation, object dependentEntity)
{
if (navigation.PointsToPrincipal)
{
return _getterSource.GetAccessor(navigation).GetClrValue(dependentEntity);
}
// TODO: Perf
foreach (var principalEntry in stateManager.StateEntries
.Where(e => e.EntityType == navigation.ForeignKey.ReferencedEntityType))
{
if (navigation.IsCollection())
{
if (_collectionAccessorSource.GetAccessor(navigation).Contains(principalEntry.Entity, dependentEntity))
{
return principalEntry.Entity;
}
}
else if (_getterSource.GetAccessor(navigation).GetClrValue(principalEntry.Entity) == dependentEntity)
{
return principalEntry.Entity;
}
}
return null;
}
public QueryContext(
[NotNull] IModel model,
[NotNull] ILogger logger,
[NotNull] StateManager stateManager)
{
Check.NotNull(model, "model");
Check.NotNull(logger, "logger");
Check.NotNull(stateManager, "stateManager");
_model = model;
_logger = logger;
_stateManager = stateManager;
}
public override bool DetectChanges(StateManager stateManager)
{
DetectChangesCalled = true;
return false;
}