saveOrUpdate(), or cascade, just creates new rows for old instances (or causes a unique key violation)!

The faqs says

For a composite identifier, you should simply specify unsaved-value. In the second case, you can't use saveOrUpdate(). You should explicitly call save() or update() on a case-by-case basis, use Interceptor.isUnsaved in Hibernate2, or use version unsavec-value in Hibernate 2.1.


Does anyone have a example how to implement this

in stepState mapping file I have he following
.. should i chjange from cascade="all" to cascade="save-update" ?
<set
name="contents"
lazy="false"
inverse="true" cascade="all"
>
<meta attribute="field-description">
@hibernate.set
lazy="false"
inverse="true"

@hibernate.collection-key
column="CON_GROUP_ID"
@hibernate.collection-key
column="CON_WRK_SESSION_ID"
@hibernate.collection-key
column="CON_STEP_ID"

@hibernate.collection-one-to-many
class="com.test.groupstate.hibernate.Content"
</meta>
<key>
<column name="CON_STEP_ID" />
<column name="CON_WRK_SESSION_ID" />

<column name="CON_GROUP_ID" />
</key>
<one-to-many
class="com.test.groupstate.hibernate.Content"
/>

</set>

below is content table mapping
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 2.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd" >

<hibernate-mapping>

<class
name="com.testgroupstate.hibernate.Content"
table="CBMCON00"
>
<meta attribute="class-description" inherit="false">
@hibernate.class
table="CBMCON00"
</meta>

<composite-id name="contentPK"
class="com.test.groupstate.hibernate.ContentPK" unsaved-value="any">
<meta attribute="class-description" inherit="false">
@hibernate.id
generator-class="assigned"

</meta>
<key-property
name="contentTypeCode"
column="CON_CNTNT_TYPE_CDE"
type="java.lang.Integer"
length="5"
>
<meta attribute="field-description">
@hibernate.property
column="CON_CNTNT_TYPE_CDE"
length="5"
</meta>
</key-property>
<!-- bi-directional many-to-one association to Cbmsts00 -->
<key-many-to-one
name="stepState"
class="com.test.groupstate.hibernate.StepState"
>
<meta attribute="field-description">
@hibernate.many-to-one
column="CON_GROUP_ID""
</meta>
<meta attribute="field-description">
@hibernate.many-to-one
column="CON_WRK_SESSION_ID""
</meta>
<meta attribute="field-description">
@hibernate.many-to-one
column="CON_STEP_ID""
</meta>
<column name="CON_GROUP_ID" />

<column name="CON_WRK_SESSION_ID" />
<column name="CON_STEP_ID" />

</key-many-to-one>
</composite-id>
<!--
<timestamp column="CON_INSERT_TMS" name="insertTms" unsaved-value="null">
</timestamp>
-->

<property
name="contentObj"
type="java.lang.String"
column="CON_CNTNT_OBJ"
not-null="true"
length="100"
>
<meta attribute="field-description">
@hibernate.property
column="CON_CNTNT_OBJ"
length="100"
not-null="true"
</meta>
</property>


<property
name="insertTms"
type="timestamp"
column="CON_INSERT_TMS"
not-null="true"
length="26"
>

<meta attribute="field-description">
@hibernate.property
column="CON_INSERT_TMS"
length="26"
not-null="true"
</meta>
</property>




<!-- associations -->

</class>
</hibernate-mapping>