Re: count(*) with parameter

From: Arnaud Garcia (arnau..magemed-87.com)
Date: Mon Apr 19 2010 - 12:28:35 EDT

  • Next message: Joe Baldwin: "Re: count(*) with parameter"

    Hi and thanks,

    Well both, modeler and code (just for my cayenne understanding...)
    And in the modeler ?

    Arnaud

    2010/4/18 Joe Baldwin <jfbaldwi..arthlink.net>

    > Arnaud,
    >
    > If I understand you, I think you want to do this in the code and not the
    > modeler?
    >
    > Here is a simple code fragment for a like-ignore-case qualifier:
    >
    > String substring = "Martin";
    > ObjectContext oc = BaseContext.getThreadObjectContext();
    > Expression exp =
    > ExpressionFactory.likeIgnoreCaseExp(Product.NAME_PROPERTY, ("%" + substring
    > + "%"));
    > SelectQuery query = new SelectQuery(Product.class, exp);
    > List list = oc.performQuery(query);
    > System.out.println("\ncount: " + list.size());
    >
    > This is pretty efficient and to my knowledge does not trigger any
    > DataObject faults. There are a few other ways to do this depending on your
    > design. The ExpresionFactory has a lot of powerful methods to help you out.
    >
    > Joe
    >
    >
    >
    >
    > On Apr 18, 2010, at 12:15 PM, Arnaud Garcia wrote:
    >
    > > Hello,
    > >
    > > I am not sure how to create a select count(*) in the modeler when I need
    > to
    > > pass a parameter ?
    > > I downloaded the petstore example, and it seems that I have to create a
    > "Raw
    > > SQL" Query, and directly write my select count(*)...
    > >
    > > =>but how to I had my parameter in my SQL ?
    > >
    > > ... then I suppose I can do ctxt.performQuery("myCount",params,true) ?
    > >
    > > thanks for help for this beginner question...
    > >
    > > Arnaud
    >
    >



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