Re: Query Examples Needed Expression.fromString() syntax?

From: Joshua Pyle (joshua.t.pyl..mail.com)
Date: Wed May 24 2006 - 13:59:25 EDT

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    I never use fromString any more.

    But using the expressionFactory to and and or expressions is very simple...

    Expression e = ExpressionFactory.greaterExp("estimatedPrice", new
    BigDecimal(100000.0));

    e = e.and( ExpressionFactory.lessExp("estimatedPrice", new
    BigDecimal(5000.0)) );

    -- 
    Joshua T. Pyle
    Go has always existed.
    

    On 5/24/06, Eric Lazarus <ericllazaru..ahoo.com> wrote: > Would anyone reply with some nice examples of > SelectQuery beside the simple one here: > > http://www.objectstyle.org/cayenne/userguide/dataobjects/dataobjects-example.html > > Expression e = > ExpressionFactory.greaterExp("estimatedPrice", > new BigDecimal(100000.0)) > > I need to do things with ANDS and ORs and I'm not sure > how to use expression factory (or should I use > Expression.fromString() ?) to do it. > > Right now my immediate need is to be able to construct > a query with an arbitary number of possible "and" > clauses depending on what the user types. > > Seems like fromString() is going to be easy and > powerful but I can't find an example of the syntax > using google. > > Even just a few nice examples would be helpful. > > Can I look at the attributes of sub objects using this > syntax? How? > > Thanks! > > Eric > > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam protection around > http://mail.yahoo.com >

    -- Joshua T. Pyle Go has always existed.



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