Why is session.IsDirty() true immediately after loading objects?
Each flush generates several unnecessary update statements.

Whats wrong?

tia cybere


code
-----------------
ICriteria crit = Session.CreateCriteria(typeof(BLogic.Ads.Advertising))
.Add(Expression.IsNull("Parent"));

Debug.Print(Session.IsDirty().ToString()); //false

IList items = crit
.AddOrder(Order.Asc("ClassID"))
.AddOrder(Order.Asc("Description"))
.List();

Debug.Print(Session.IsDirty().ToString()); //true
-----------------

private ISession Session {
get {
if (_session == null || !_session.IsOpen) {
_factory = Data.Connection.Factory;
_session = _factory.OpenSession();
_session.FlushMode = FlushMode.Commit;
}
return _session;
}
set { _session = value; }
}
-----------------


mapping
-----------------

The class Advertising refers to itself to make a hierachical grouping of ads possible.


<hibernate-mapping xmlns="urn:nhibernate-mapping-2.0">
<class name="BLogic.Ads.Advertising, BLogic" table="tAdvertising"
dynamic-update="true">
<id name="OID"
........unsaved-value="{00000000-0000-0000-0000-000000000000}">
........<generator class="guid"/></id>
........<many-to-one name="Parent" column="Parent"
................class="BLogic.Ads.Advertising, BLogic"/>
................<bag name="Children" inverse="true" lazy="true" >
................<key column="Parent" />
................<one-to-many class="BLogic.Ads.Advertising, BLogic" />
................</bag>

........<property name="ClassID" type="Int32"/>
........<property name="Code" type="String(25)" length="25"/>
........<property name="Description" type="String" length="30"/>
........<property name="Costs" type="Decimal"/>
........<property name="Active" type="Boolean"/>
........<property name="CreatedDate" type="Date"/>
</class>
</hibernate-mapping>

the problem was in the mapping file.

didn't know how to store an enum correct.

this leads to IsDirty true immediatly after loading and unnecassary updates


this is working correct