Hibernate version:
1.0.3.0
Mapping documents:

In Parent

<bag name="Childs" inverse="true" lazy="true" cascade="all-delete-orphan">
<key column="ID_PARENT"/>
<one-to-many class="Eg.Child"/>
</bag>

In Child :

<many-to-one name="Parent" class="Eg.Parent" column="ID_PARENT" />



Code between sessionFactory.openSession() and session.close():
just a session.Get


Full stack trace of any exception that occurs:
Failed to lazily initialize a collection - no session

Name and version of the database you are using:
Sql Server 2005



Hello,

I cannot clear a child collection from the parent without loading the collection. For example (assuming p was loaded with a session.Get)

p.Childs.Clear();
session.Update(p);

I would like to avoid the creation of a special query with left join fetch and I want to keep the lazy=true, is it possible ?

In my Parent.cs class, Child property is a IList (System.Collections.IList).

Thanks for your help

Gengis

because,set "lazy=true", so, When you get the object ,it is details is lazy.

to solve your problem, you should set FetchMode to eager your details,
or Call NHibernateUtil.initailObj to eager your details, then you can
via the details attibute ,and call it is clear() method.