I'm fearly new to the use of hibernate.. but I have made some stuff that worked.. but now I have run into at problem that I can't solve.

I have mappings that look like this:

<hibernate-mapping package="db">
<class name="Number" table="numbers" >
<id name="id" column="number_id" type="long" unsaved-value="null">
<generator class="native"/>
</id>
<property name="number" column="number" type="string" length="25" />
<property name="type" column="type" type="string" length="25"/>
<property name="status" column="status" type="string" length="25"/>
<many-to-one name="series" class="NumberSeries" column="series_id" not-null="true" />
</class>
</hibernate-mapping>

<hibernate-mapping package="db">
<class name="NumberSeries" table="numberseries" >
<id name="id" column="series_id" type="long" unsaved-value="null">
<generator class="native"/>
</id>
<property name="start" column="start" type="string" length="25" />
<property name="end" column="end" type="string" length="25"/>
<property name="status" column="status" type="string" length="25"/>
<list name="numbers" cascade="all" inverse="true" lazy="true">
<key column="series_id" />
<index column="number_id" />
<one-to-many class="Number" />
</list>
</class>
</hibernate-mapping>


But when I retrieve the list with getNumbers() it contains the correcet objects but the first object in the list is 'null'.

Anybody have any idea what I'm doing wrong?

List uses an Index. The index determines the position in the list. If the index positions have gaps then a null will be in that position of the list. Check your index values don't have gaps and start with the first index 0.

Thanx.. It all makes sense now :)