Ok, here is what I have right now:

<field name="childNode" type="xdo.Node2" collection="array">
<sql many-key="id" name="parent_node_id"/>
</field>

"array" is the correct collection type in this case.

Here is the error I am getting at run time:

[my_name] java.lang.IllegalArgumentException: Collection Proxy
doesn't exist for it type

Any clues?


>--- Original Message ---
>From: "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>
>To: [EMAIL PROTECTED]
>Date: 9/14/01 11:48:43 AM
>

>
>
>How do I express this in a JDO mapping file:
>
>id char8),        -- primary key
>parent_id char(8) -- foreign key to same table
>
>I need the mapping syntax to accomplish this.  This is an extremely
>common SQL idiom.
>I have left out details such as the foreign key declaration
and
>other data.
>Thanks in advance.
>
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