Re: Newbie question about to-many ordered list

From: Malcolm Edgar (malcolm.edga..mail.com)
Date: Tue May 06 2008 - 03:52:33 EDT

  • Next message: Andrus Adamchik: "Re: Newbie question about to-many ordered list"

    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 <ar..sh.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
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    >
    >
    >



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