hi, i have a question about how to get tree object working with NHibernate.
i don't want to have parent or parentId property on my object since i have
no need of it in my business layer and so this is my object:
public class Tag
{
public int Id { get; set; }
public int Description { get; set; }
private IList<Tag> childTag = new List<Tag>();
public virtual IEnumerable<Tag> ChildTag
{ get { return childTag.ToArray(); } }
public virtual void Add(Tag child)
{ childTag .Add(child); }
public virtual bool Remove(Tag child)
{ return childTag .Remove(child); }
}
with this map:
public TagMap()
{
Id(x => x.Id)
.Column("Kint_T01_IdTag")
.GeneratedBy.Assigned();
HasMany(x => x.ChildTag)
.KeyColumn("ParentId")
.Cascade.All()
.Access.CamelCaseField().ReadOnly();
}
(i try also adding .Not.Inverse() but nothing change)
when i run this test
Tag Tag= fixture.Build<Tag>().Do(x => x.Add(fixture.Create<Tag>())).Create
();
Tag TagActual;
using (IUnitOfWork uow = new UnitOfWork())
{
uow.openConnection();
uow.TagRepository.Create(Tag);
uow.commit();
Tag.Rmove(Tag.ChildTag.First());
uow.TagRepository.Update(Tag);
uow.commit();
uow.closeConnection();
uow.openConnection();
TagActual = uow.TagRepository.GetById(Tag.Id);
TagActual.ShouldBeEquivalentTo(Tag);
uow.closeConnection();
}
it fails because TagActual.ChildTag contains a child even if i remove it
from parent collection.
debugging the test i see that after
uow.TagRepository.Create(Tag);
uow.commit();
two record are inserted in table and `parent` property of children is set
correctly
`Tag.Rmove(Tag.ChildTag.First()); ` work correctly and after that the
collection is empty
but after
uow.TagRepository.Update(Tag);
uow.commit();
nothing change in table and 'parent' filed is still set.
In this way the test failed because TagActual has a collection of children
while this should be empty
Why NHibernate correctly manage the `add` operation but not the `remove`
Is there a way to do it without adding `Parent` property to my object and
manually manage it?
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