private bool FilterParent(SelfReferencingComposition_OneToMany entity)
{
return (entity.ID == this.ParentID);
}
private void DetachChildren(SelfReferencingComposition_OneToMany entity)
{
entity.Parent = null;
}
public void Composition_EntityReferenceBug()
{
ConfigurableEntityContainer container = new ConfigurableEntityContainer();
container.CreateSet<SelfReferencingComposition_OneToMany>(EntitySetOperations.All);
SelfReferencingComposition_OneToMany s1 = new SelfReferencingComposition_OneToMany() { ID = 1 };
SelfReferencingComposition_OneToMany s2 = new SelfReferencingComposition_OneToMany() { ID = 2, ParentID = 1 };
SelfReferencingComposition_OneToMany s3 = new SelfReferencingComposition_OneToMany() { ID = 3, ParentID = 1 };
SelfReferencingComposition_OneToMany s4 = new SelfReferencingComposition_OneToMany() { ID = 4, ParentID = 3 };
container.LoadEntities(new Entity[] { s1, s2, s3, s4 });
SelfReferencingComposition_OneToMany child = s1.Children.Single(p => p.ID == 2);
child.Value += "x";
EntityChangeSet cs = container.GetChanges();
Assert.AreEqual(2, cs.ModifiedEntities.Count);
List<ChangeSetEntry> entries = ChangeSetBuilder.Build(cs);
Assert.AreEqual(4, entries.Count);
}
private void AttachChildren(SelfReferencingComposition_OneToMany entity)
{
entity.Parent = this;
}
[Ignore] // repro test - enable once bug is fixed
public void CompositionSelfReference_UpdateChildBypassingParent()
{
ConfigurableEntityContainer container = new ConfigurableEntityContainer();
container.CreateSet<SelfReferencingComposition_OneToMany>(EntitySetOperations.All);
SelfReferencingComposition_OneToMany s1 = new SelfReferencingComposition_OneToMany() { ID = 1 };
SelfReferencingComposition_OneToMany s2 = new SelfReferencingComposition_OneToMany() { ID = 2, ParentID = 1 };
container.LoadEntities(new Entity[] { s1, s2 });
// load the child w/o loading the parent
SelfReferencingComposition_OneToMany child = container.GetEntitySet<SelfReferencingComposition_OneToMany>().Single(p => p.ID == 2);
Assert.IsNull(((Entity)child).Parent);
child.Value += "x";
// When this bug is fixed, we'd expect an exception during ChangeSetBuilder.Build
EntityChangeSet cs = container.GetChanges();
List<ChangeSetEntry> entries = ChangeSetBuilder.Build(cs);
}
