On 5/16/05, Ronald Rudy <[EMAIL PROTECTED]> wrote:
> Can I assume based on the lack of responses that there is no way to sort
> these collections via Castor?
>
>
> -----Original Message-----
> From: Ronald Rudy [mailto:[EMAIL PROTECTED]
> Sent: Monday, May 16, 2005 9:55 AM
> To: [email protected]
> Subject: [castor-dev] Ordering objects in one-to-many relationship..
>
> I have a simple object that has as an attribute an arraylist of many 'child'
> objects based on a foreign key. This works perfectly fine with the
> following mapping syntax:
>
> <class name="com.xyz.ParentObject" identity="parentId"
> key-generator="SEQUENCE">
> <description>"Parent Object"</description>
> <map-to table="parent"/>
> <cache-type type="none"/>
> {...}
> <field name="children" type="com.xyz.ChildObject"
> collection="arraylist">
> <sql many-key="parent_id"/>
> </field>
> {...}
> </class>
>
> This loads perfectly fine without issue, but what I'd like to do is order
> the arraylist that is generated based on two identified columns. Is this
> possible without manually reordering the collected arraylist?
Ronald,
Castor does not provide a manner in which to sort the objects in a
collection. The only solution I can I think of is to pass in an ORDER
BY clause in the OQL query. Beyond that maybe we could consider
creating an optional order-by attribute on the field element only for
use with fields of a collection type.
Bruce
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