cayenne-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Andrus Adamchik <and...@objectstyle.org>
Subject Re: Newbie question about to-many ordered list
Date Tue, 06 May 2008 07:59:23 GMT
As a side note pre-ordered relationships have been on our TODO list  
for some time. Since it is a JPA feature, it is higher priority now.

Andrus

On May 6, 2008, at 10:52 AM, Malcolm Edgar wrote:

> I tend to do this:
>
> public List<Customer> getCustomers() {
>    List<Customers> customers = super.getCustomers();
>
>    Collections.sort(customers, new
> StringComparator(Customer.NAME_PROPERTY));
>
>    return customers;
> }
>
> regards Malcolm Edgar
>
> On Tue, May 6, 2008 at 4:58 PM, Aristedes Maniatis <ari@ish.com.au>  
> wrote:
>
>>
>> On 06/05/2008, at 11:30 AM, JGL wrote:
>>
>> Hi All,
>>>
>>> I recently discovered Cayenne while searching for an alternative for
>>> Hibernate.
>>> I am very impressed with the easy & intuitive framework Cayenne
>>> provides.
>>>
>>> While porting my current Hibernate app to Cayenne, I did run into an
>>> issue
>>> which I'd like to seek your help:
>>> In Hibernate, the M side of 1-M relationship can be mapped as a  
>>> list,
>>> which
>>> means it's ordered. I can specify the list-index column like this:
>>>
>>> <class name="Item" table="ITEM">
>>> ...
>>> <list name="bids">
>>> <key column="ITEM_ID" not-null="true"/>
>>> <list-index column="BID_POSITION"/>
>>> <one-to-many class="Bid"/>
>>> </list>
>>> </class>
>>>
>>> and the BID_POSITION is automatically managed by the framework.
>>>
>>> Is there any 'list index column' equivalent in Cayenne? How can I  
>>> ask
>>> the
>>> framework to manage the list index ? or do I have to manage it by
>>> myself?
>>>
>>> Thanks very much!!
>>>
>>
>>
>> Well, you can order the results easily enough once you fetch them  
>> into a
>> list:
>>
>> http://cayenne.apache.org/doc/using-orderings.html
>>
>> In Cayenne 3 you can also fetch the results into a Map if that  
>> helps what
>> you are trying to do.
>>
>>
>> Ari Maniatis
>>
>>
>>
>> -------------------------->
>> ish
>> http://www.ish.com.au
>> Level 1, 30 Wilson Street Newtown 2042 Australia
>> phone +61 2 9550 5001   fax +61 2 9550 4001
>> GPG fingerprint CBFB 84B4 738D 4E87 5E5C  5EFA EF6A 7D2E 3E49 102A
>>
>>
>>


Mime
View raw message