Re: generics and ObjectContext

From: Andrus Adamchik (andru..bjectstyle.org)
Date: Tue Nov 20 2007 - 15:16:54 EST

  • Next message: Robert Zeigler: "Re: generics and ObjectContext"

    Yeah, considering the rest of this thread (BTW, "setFetchingDataRow"
    where mentioned at the beginning), I am also thinking along the lines
    of taking generics out of ObjectContext and into some wrapper query
    API, which would be either a modification of the current queries, or
    indeed a wrapper along the lines of CAY-877.

    Andrus

    On Nov 20, 2007, at 9:55 PM, MikaŽl Cluseau wrote:

    >
    > Le mardi 20 novembre 2007 ŗ 21:11 +0200, Andrus Adamchik a ťcrit :
    >
    >> I guess any query that does not take a class (SelectQuery may also be
    >> entity-name based) would be Query<?>, resulting in List<?> returned.
    >
    > Query<Persistent>, indeed, since you can't put "new Query<?>()". Thus,
    > someone could write about anything he wants, and I think it is a
    > feature, since it allows you to say "I know what it will be". I.e. new
    > SelectQuery<User>("User").
    >
    > I think only "SelectQuery" should the parametrized, and require a
    > class
    > to be constructed.
    >
    > Has the "setFetchingDataRow" been discussed ? Because
    > context.performQuery wouldn't return the same kind on List with the
    > same
    > query object.
    >
    > ---- Random thoughts around that ----
    >
    > You may to consider that the query can have the "perform*" methods in
    > the following way (may have been discussed in Jira, I dunno), and to
    > allow chain commands :
    >
    > ObjectContext context = ...;
    > List<User> results = new SelectQuery<User>(User.class)
    > .andQualifier("registrationTime<?", new Date())
    > .addOrder("registrationTime", "desc"),
    > .addOrder("login")
    > .fetch(); // or List<DataRow> [...].fetchRows();
    >
    > Making Query iterable instead of using performIteratedQuery would be
    > better, too.
    >
    > Cheers,
    >
    > --
    > MikaŽl Cluseau <mc.isi.n..mail.com>
    > ISI.NC
    >



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