[nhibernate-issues] [NHJIRA] Commented: (NH-2727) Calling ISession.IsDirty Raises SaveOrUpdate Event

[Ricardo P. (JIRA) <nh...@gm...>]

    [ http://216.121.112.228/browse/NH-2727?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=21169#action_21169 ] 

Ricardo Peres commented on NH-2727:
-----------------------------------

The scenario is this:

#1: OK
using (ISession session = sessionFactory.OpenSession())
{
	UserGroup ug = session.Query<UserGroup>().FirstOrDefault();
	User u = ug.User;

	Debug.Assert(session.IsChanged(ug) == false);
	Debug.Assert(session.IsChanged(u) == false);
	Debug.Assert(ug.User == u);
	Debug.Assert(session.IsDirty() == false);
}

#2: Problem
using (ISession session = sessionFactory.OpenSession())
{
	User u = session.Query<User>().FirstOrDefault();
	UserGroup ug = u.UserGroup.First();

	Debug.Assert(session.IsChanged(ug) == false);
	Debug.Assert(session.IsChanged(u) == false);
	Debug.Assert(ug.User == u);
	Debug.Assert(session.IsDirty() == false);	//SaveOrUpdate event is raised, which, in my case, triggers a change in an entity, causing the session to be dirty
}

#3: Problem

using (ISession session = sessionFactory.OpenSession())
{
	session.Query<UserGroup>().ToList();		//even if I preload all UserGroups, the event is still raised
	User u = session.Query<User>().FirstOrDefault();
	UserGroup ug = u.UserGroup.First();

	Debug.Assert(session.IsChanged(ug) == false);
	Debug.Assert(session.IsChanged(u) == false);
	Debug.Assert(ug.User == u);
	Debug.Assert(session.IsDirty() == false);	//SaveOrUpdate event is raised, which, in my case, triggers a change in an entity, causing the session to be dirty
}


> Calling ISession.IsDirty Raises SaveOrUpdate Event
> --------------------------------------------------
>
>                 Key: NH-2727
>                 URL: http://216.121.112.228/browse/NH-2727
>             Project:  NHibernate
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 3.1.0, 3.2.0Beta1
>            Reporter: Ricardo Peres
>         Attachments: FlushTest.zip
>
>
> When calling ISession.IsDirty() after loading an entity which lazy loads another one and doing nothing to them, the SaveOrUpdate event is raised on the lazy loaded entity.
> This doesn't happen all the time, only if the lazy loaded entity is not specifically loaded beforehand.
> The included test creates the DB and populates it with test records. The HIBERNATE_UNIQUE_KEY table must be created first, since SchemaUpdate does not create it.

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