Hibernate version:
3.2.0 GA

Mapping documents:

Tournoi.hbm.xml

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" >

<hibernate-mapping>
<!--
Created by the Middlegen Hibernate plugin 2.2

http://boss.bekk.no/boss/middlegen/
http://www.hibernate.org/
-->

<class
name="com.pescorer.business.Tournoi"
table="TOURNOI"
lazy="false"
>

<id
name="numero"
type="java.lang.Long"
column="NUMERO"
>

<generator class="native" />
</id>

<property
name="type"
type="java.lang.Integer"
column="TYPE"
not-null="true"
/>

<!-- Associations -->

<!-- bi-directional one-to-many association to Participant -->

<set
name="participants"
lazy="true"
inverse="true"
cascade="all"

>
<key>
<column name="NUM_TOURNOI" />
</key>

<one-to-many
class="com.pescorer.business.Participant"
/>
</set>
<!-- bi-directional one-to-one association to Championnat -->
<one-to-one
name="championnat"
class="com.pescorer.business.Championnat"
outer-join="auto"
/>
<!-- bi-directional one-to-many association to Match -->

<set
name="matches"
lazy="true"
inverse="true"
cascade="all"
order-by="numero asc"

>
<key>
<column name="NUM_TOURNOI" />
</key>

<one-to-many
class="com.pescorer.business.Match"
/>
</set>
<!-- bi-directional one-to-one association to Coupe -->
<one-to-one
name="coupe"
class="com.pescorer.business.Coupe"
outer-join="auto"
/>
<!-- bi-directional one-to-many association to Classement -->

<set
name="classements"
lazy="true"
inverse="true"
cascade="all"

>
<key>
<column name="NUM_TOURNOI" />
</key>

<one-to-many
class="com.pescorer.business.Classement"
/>
</set>
<!-- bi-directional many-to-one association to Saison -->
<many-to-one
name="saison"
class="com.pescorer.business.Saison"
not-null="true"
>
<column name="NUM_SAISON" />
</many-to-one>

</class>
</hibernate-mapping>

Match.hbm.xml

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" >

<hibernate-mapping>
<!--
Created by the Middlegen Hibernate plugin 2.2

http://boss.bekk.no/boss/middlegen/
http://www.hibernate.org/
-->

<class
name="com.pescorer.business.Match"
table="MATCH"
lazy="false"
>

<id
name="numero"
type="java.lang.Long"
column="NUMERO"
>

<generator class="native" />
</id>

<property
name="nbButs1"
type="java.lang.Integer"
column="NB_BUTS1"
/>
<property
name="nbButs2"
type="java.lang.Integer"
column="NB_BUTS2"
/>
<property
name="prolongations"
type="java.lang.Boolean"
column="PROLONGATIONS"
/>
<property
name="penalties"
type="java.lang.Boolean"
column="PENALTIES"
/>
<property
name="nbPenalties1"
type="java.lang.Integer"
column="NB_PENALTIES1"
/>
<property
name="nbPenalties2"
type="java.lang.Integer"
column="NB_PENALTIES2"
/>
<property
name="groupe"
type="java.lang.Integer"
column="GROUPE"
/>
<property
name="journee"
type="java.lang.Integer"
column="JOURNEE"
/>
<property
name="tour"
type="java.lang.Integer"
column="TOUR"
/>
<property
name="forfait"
type="java.lang.Boolean"
column="FORFAIT"
not-null="true"
/>
<property
name="verrouille"
type="java.lang.Boolean"
column="VERROUILLE"
not-null="true"
/>

<!-- Associations -->

<!-- bi-directional many-to-one association to Tournoi -->
<many-to-one
name="tournoi"
class="com.pescorer.business.Tournoi"
not-null="true"
>
<column name="NUM_TOURNOI" />
</many-to-one>
<!-- bi-directional many-to-one association to UtilisateurParticipant -->
<many-to-one
name="utilisateurParticipantByNumUtilisateurParticipant1"
class="com.pescorer.business.UtilisateurParticipant"
not-null="true"
>
<column name="NUM_UTILISATEUR_PARTICIPANT1" />
</many-to-one>
<!-- bi-directional many-to-one association to UtilisateurParticipant -->
<many-to-one
name="utilisateurParticipantByNumUtilisateurParticipant2"
class="com.pescorer.business.UtilisateurParticipant"
not-null="true"
>
<column name="NUM_UTILISATEUR_PARTICIPANT2" />
</many-to-one>
<!-- bi-directional one-to-many association to Stat -->

<set
name="stats"
lazy="true"
inverse="true"
cascade="all"

>
<key>
<column name="NUM_MATCH" />
</key>

<one-to-many
class="com.pescorer.business.Stat"
/>
</set>

</class>
</hibernate-mapping>


Name and version of the database you are using:

HSQLDB 1.8.0

I have a Tournoi instance in memory with a collection of Matches. This instance is persistent (session.save(tournoi) has been done).
Then, I retrieve a new collection of matches with a Criteria query.
I make some changes in some matches of that collection and if I write the following :


I still have the old match. I must load the tournoi again from the DB to get the up-to-date collection.
Is any way to synchronize this collection ?

I know that a question almost similar had been asked but I was wondering if it has something to do with detached instances...
It seems strange that there is not any automatic process managed by Hibernate.

session.refresh(object)

It does not work. I refreshed the "Tournoi" object but the collection still have the old values for the matches that have changed.

If you're still having this problem, have you tried session.flush() after you make changes to your Tournoi object's collection? That is, if you're making the query in the same transaction as the changes to the Tournoi object.