I have a 1->Many collection The Many being in the form of a Map.

Specifically the Relationship is User->UserLanguage. The Map of UserLanguage objects is keyed on languageCode. Said Map and initialized UserLanguage instances are populated in the User class constructor.

Anyway, what I am experiencing is that when I save an instance of User initially, it works great, persisting the UserLanguage records. No problem.

But when I retrieve the User class, things get weird.

If I do:

user.getLanguage("en").setLanguageProficiencyCode("0");
session.update(user);

I get JDBC Exception:

01:48:40,322 ERROR JDBCExceptionReporter:58 - Duplicate key or integrity constraint violation message from server: "Duplicate entry '10-en' for key 2"


I thought this had been working unti the upgrade to Hibernate 3...

I'm hoping it's something obvious. TIA


Hibernate version: 3.0 rc1


Mapping documents:
[code]
<hibernate-mapping>
<class
name="bb.model.UserLanguage"
table="UserLanguage"
dynamic-update="true"
dynamic-insert="true"
>

<id
name="id"
column="Id"
type="java.lang.Integer"
unsaved-value="null"
>
<generator class="identity">
</generator>
</id>

<many-to-one
name="user"
class="bb.model.User"
cascade="none"
outer-join="auto"
update="true"
insert="true"
column="UserId"
/>

<property
name="languageProficiencyCode"
type="java.lang.String"
update="true"
insert="true"
column="ProficiencyCode"
/>

<property
name="languageCode"
type="java.lang.String"
update="true"
insert="true"
column="languageCode"
/>

</class>

</hibernate-mapping>

User Mapping is snipped. It's actually a joined subclass of UserEntity

<joined-subclass
name="bb.model.User"
table="User"
dynamic-update="true"
dynamic-insert="true"
>
<key
column="UserId"
/>
<property
name="gender"
type="java.lang.String"
update="true"
insert="true"
access="property"
column="gender"
/>

<property
name="birthDate"
type="java.util.Date"
update="true"
insert="true"
access="property"
column="birthDate"
/>


<map
name="languages"
lazy="true"
sort="unsorted"
inverse="true"
cascade="all"
>

<key
column="UserId"
>
</key>

<index
column="LanguageCode"
type="string"
/>

<one-to-many
class="bb.model.UserLanguage"
/>

</map>

Basically it's trying to do an insert on the same UserLanguage record it retrieved rather than doing an update.

The only thing I can think of is that I have somehow munged the User record I retrieved, making Hibernate think it's not the same record I had before (but then I would expect to see the User record have an attempted insert first).


I'm really scratching my head here...

Problem caused Bug in BeanUtils.