I'm using Hibernate 2.0.1 and McKoi 1.0

I have problems with a one-to-many reference of a subclass referencing another subclass of the same superclass.

The following mapping define a class called BaseItem. It has two ubclasses that extends the functionality of BaseItem. The ArrayItem subclass contains a one-to-many association with the Item subclass.

[code]
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping SYSTEM "http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">
<hibernate-mapping>
<class name="dvs.summit.data.items.BaseItem" table="Item" discriminator-value="base">
<id name="id" type="long" column="id" unsaved-value="null">
<generator class="hilo"/>
</id>
<discriminator column="type"/>
<many-to-one name="device" column="device_id" class="dvs.summit.devices.DeviceData"/>
<property name="itemIndex" column="itemIndex" type="integer"/>

<!-- Item subclass -->
<subclass name="dvs.summit.data.items.Item" discriminator-value="item">
<property name="arrayIndex" column="arrayIndex" type="integer"/>
<property name="valueId" column="value_id"/>
<many-to-one name="owningArray" column="arrayItem_id"/>
<subclass name="dvs.summit.data.items.StringItem" discriminator-value="string"/>
<subclass name="dvs.summit.data.items.BCDItem" discriminator-value="bcd"/>
<subclass name="dvs.summit.data.items.IntegerItem" discriminator-value="integer">
<subclass name="dvs.summit.data.items.S8Item" discriminator-value="S8"/>
<subclass name="dvs.summit.data.items.S16Item" discriminator-value="S16"/>
<subclass name="dvs.summit.data.items.S32Item" discriminator-value="S32"/>
<subclass name="dvs.summit.data.items.S64Item" discriminator-value="S64"/>
<subclass name="dvs.summit.data.items.U8Item" discriminator-value="U8"/>
<subclass name="dvs.summit.data.items.U16Item" discriminator-value="U16"/>
<subclass name="dvs.summit.data.items.U32Item" discriminator-value="U32"/>
</subclass>
<subclass name="dvs.summit.data.items.FloatItem" discriminator-value="float">
<subclass name="dvs.summit.data.items.F32Item" discriminator-value="F32"/>
<subclass name="dvs.summit.data.items.F64Item" discriminator-value="F64"/>
<subclass name="dvs.summit.data.items.FloatDecItem" discriminator-value="FD64"/>
</subclass>
<subclass name="dvs.summit.data.items.DateItem" discriminator-value="date">
<subclass name="dvs.summit.data.items.D32Item" discriminator-value="D32"/>
<subclass name="dvs.summit.data.items.D64Item" discriminator-value="D64"/>
</subclass>
<subclass name="dvs.summit.data.items.ByteArrayItem" discriminator-value="binary"/>
<subclass name="dvs.summit.data.items.AlarmItem" discriminator-value="alarm"/>
</subclass>

<!-- Array subclass -->
<subclass name="dvs.summit.data.items.ArrayItem" discriminator-value="array">
<list name="items" inverse="true" cascade="all">
<key column="arrayItem_id"/>
<index column="arrayIndex"/>
<one-to-many class="dvs.summit.data.items.Item"/>
</list>
<subclass name="dvs.summit.data.items.StringArrayItem" discriminator-value="string-array"/>
<subclass name="dvs.summit.data.items.AlarmArrayItem" discriminator-value="alarm-array"/>
</subclass>
</class>
</hibernate-mapping>

[/code]

The problem is that the referenced Items (referenced by ArrayItem) has always null values for its BaseItem properties device_id and itemIndex.

[code]
id type device_id itemIndex arrayIndex arrayItem_id
-----------------------------------------------------------------------------
100 array 5 7 null null
101 S8 null null 0 100
101 S8 null null 1 100
101 S8 null null 2 100
[/code]

it should be (I think)

[code]
id type device_id itemIndex arrayIndex arrayItem_id
-----------------------------------------------------------------------------
100 array 5 7 null null
101 S8 5 7 0 100
101 S8 5 7 1 100
101 S8 5 7 2 100

[/code]

It seems that Hibernate never calls getDevice() and getItemIndex() for the items referenced by the ArrayItem.

Can someone please tell me what's wrong?

It seems that it was a McKoi bug.