Re: Expression string

From: Mike Kienenberger (mkienen..mail.com)
Date: Mon Mar 03 2008 - 16:00:11 EST

  • Next message: Eric Polino: "Re: Expression string"

    I may very well be wrong, but don't you have to use #result macros to
    assign specific types and values for each result in the map instead of
    using "select *"?

    From reviewing my own SQLTemplate code

                "select"
                + " #result('s.ID' 'long' 'ID'),"
                + " #result('s.SHORT_NAME' 'String' 'SHORT_NAME'),"
                + " #result('s.SYSTEM_ID' 'long' 'SYSTEM_ID')"

    On 3/3/08, Eric Polino <eri..ampgroundautomation.com> wrote:
    > I'm trying to query my db with the following setup and it keep getting
    > Expression parsing errors
    >
    > Expression exp = Expression.fromString(
    > "select * from SA.Site s" +
    > "where not exists ( "+
    > "select * from SA.Reservation r " +
    > "where " +
    > "r.checkindate < $out and " +
    > "r.checkoutdate > $in and " +
    > "r.reservationType = 'S' and r.site = s.siteid" +
    > ") and not exists ( " +
    > "select * from SA.Stay st, SA.Reservation r " +
    > "where " +
    > "r.checkindate < $out and " +
    > "r.checkoutdate > $in and " +
    > "st.site = s.siteid" +
    > ")");
    > Map params = new HashMap();
    >
    > FieldPosition fp = new FieldPosition(DateFormat.DATE_FIELD);
    > SimpleDateFormat sdk = new SimpleDateFormat("yyyy-MM-dd");
    >
    > params.put("in", sdk.format(res.getCheckInDate(), new
    > StringBuffer(""), fp).toString());
    > params.put("out",sdk.format(res.getCheckOutDate(), new
    > StringBuffer(""), fp).toString());
    > SelectQuery sq = new SelectQuery(Site.class,
    > exp.expWithParameters(params));
    >
    > site = (Site)context.performQuery(sq).get(0);
    >
    > Execution never reaches the creation of the HashMap as
    > Expression.fromString() always throws an exception. The following is
    > the start of the logging. It _ends_ with the exception being thrown.
    > There is a long stack trace that follows.
    >
    > INFO QueryLogger: --- will run 1 query.
    > INFO QueryLogger: Opening connection: jdbc:derby://localhost:1527/SunriseDB
    > Login: sa
    > Password: *******
    > INFO QueryLogger: +++ Connecting: SUCCESS.
    > INFO QueryLogger: --- transaction started.
    > INFO QueryLogger: Detected and installed adapter:
    > org.apache.cayenne.dba.derby.DerbyAdapter
    > INFO QueryLogger: SELECT t0.cancelled, t0.checkInDate,
    > t0.checkOutDate, t0.confirmationCode, t0.reservationType, t0.siteType,
    > t0.reservationId, t0.customer, t0.site FROM SA.Reservation t0 WHERE
    > t0.confirmationCode = ? [bind: '32347'] - prepared in 49 ms.
    > INFO QueryLogger: === returned 1 row. - took 1924 ms.
    > INFO QueryLogger: +++ transaction committed.
    > Mar 3, 2008 3:17:36 PM com.sun.xml.ws.server.sei.EndpointMethodHandler invoke
    > SEVERE: [v.2.0.4 October 12 2007] Encountered "Site" at line 1, column 15.
    > Was expecting one of:
    > <EOF>
    > "or" ...
    > "and" ...
    > "not" ...
    > "!" ...
    >
    > I tried using a SQLTemplate to do the same thing, but I had issues
    > with it figuring out what object to create (Site). Anyone know why
    > I'm having this problem? I've been hunting for a few hours and don't
    > know where to look now.
    >
    > Thanks,
    > Eric
    >
    >
    > --
    > Eric Polino
    > Campground Automated Systems
    >



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