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From "Frank" <faro...@hotmail.com>
Subject Re: how to call a custom query
Date Fri, 02 Feb 2007 14:52:35 GMT
Thank you...

I will have a look at it.

Regards,

Frank
----- Original Message ----- 
From: "Michael Gentry" <blacknext@gmail.com>
To: <user@cayenne.apache.org>
Sent: Friday, February 02, 2007 8:53 AM
Subject: Re: how to call a custom query


I do agree with everyone that it is best to not use raw SQL if you can
avoid it.  Have you looked at any of the Cayenne examples?  I wrote
this one a while back, which might be helpful (even if you just kind
of trace through it without having downloading/installing the code
into Eclipse):

http://cwiki.apache.org/CAY/cayenne-in-motion.html

It shows how to do relationships/etc, too.  There are several others,
plus the modeling guide, etc.

Thanks,

/dev/mrg


On 2/2/07, Peter Schröder <Peter.Schroeder@freenet-ag.de> wrote:
> hi frank,
>
> you may use the object-graph to execute the queries you want. there is no 
> joining with cayenne-syntax. cayenne will translate your query into an 
> sql-statement with any joins that will be nessessary.
>
> so
>
> query += " FROM schedules";
>
> query += " INNER JOIN procedures ON schedules.procedure_id =
> procedures.procedure_id";
>
> query += " INNER JOIN providers ON schedules.provider_id =
> providers.provider_id";
>
> may go as something like
>
> "where schedules.procedureId = XYZ and schedules.proviederId = ABC"
>
> cayenne sees the relation and creates a join or what ever it thinks that 
> should be done.
>
>
>
> -----Urspr√ľngliche Nachricht-----
> Von: Frank [mailto:farocco@hotmail.com]
> Gesendet: Freitag, 2. Februar 2007 04:42
> An: user@cayenne.apache.org
> Betreff: Re: how to call a custom query
>
> >>I'm not sure why do you want to execute just a SQL. After doing query
> like you are proposing no data could be edited and saved back to db
> easily.
> Cayenne is a ORM, so why not getting a list of schedules ordered by
> procedure name:
> Expression exp = ExpressionFactory.matchExpr(Schedule.DATE_PROPERTY,
> new Date());
> <<
> I do not know how to join tables in the Modeler, that is why I opted for 
> the
> rawSelect.
> If I just use the Schedule.class, there is no procedure_name field, just
> procedure_id
>
> Frank
> ----- Original Message -----
> From: "Marcin Skladaniec" <marcin@ish.com.au>
> To: <user@cayenne.apache.org>
> Sent: Thursday, February 01, 2007 10:09 PM
> Subject: Re: how to call a custom query
>
>
> > Hi
> > schedule_date = CURDATE():
> > what is the schedule_date data type ? Check if you are not comparing
> > TIMESTAMP with DATE.
> >
> >
> > I would use the functionality of NamedQuery. All you do you define a
> > Query in Modeller, example :
> >
> > SELECT #result('count(*)' 'int' 'C') FROM $entityName $whereClause
> >
> > and in the code you do something like :
> >
> > HashMap map = new HashMap();
> > map.put("entityName", entity);
> > map.put("whereClause", where);
> >
> > NamedQuery query = new NamedQuery("SpecialCount", map);
> > Map row = (Map) getContext().performQuery(query).get(0);
> > return ((Number) row.get("C")).intValue();
> >
> >
> > I'm not sure why do you want to execute just a SQL. After doing query
> > like you are proposing no data could be edited and saved back to db
> > easily.
> > Cayenne is a ORM, so why not getting a list of schedules ordered by
> > procedure name:
> > Expression exp = ExpressionFactory.matchExpr(Schedule.DATE_PROPERTY, 
> > new
> > Date());
> > Ordering o = new Ordering(Schedule.PROCEDURE_PROPERTY
> > +"."+Procedure.NAME_PROPERTY);
> > SelectQuery sq = new SelectQuery(Schedule.class, exp);
> > sq.addOrdering(o);
> >
> > List schedules = context.performQuery(sq);
> > so you have the schedules
> > now just access the values you are want to display.
> >
> > Marcin
> >
> >
> > On 02/02/2007, at 12:41 PM, Frank wrote:
> >
> >> Here is my code.
> >> My table show no data. I have three records for this query.
> >>
> >> I am trying to display procedure_name, provider_name, office_phone,
> >> alt_phone
> >> The _Schedules class does not have these fields.
> >> What do I need to do?
> >>
> >> Thanks
> >> Frank
> >> public List getRecords() {
> >>
> >> String query = "SELECT ALL
> >> schedules.schedule_id,schedules.schedule_date,";
> >>
> >> query += " procedures.procedure_name,providers.provider_name,";
> >>
> >> query += " providers.office_phone,providers.alt_phone";
> >>
> >> query += " FROM schedules";
> >>
> >> query += " INNER JOIN procedures ON schedules.procedure_id =
> >> procedures.procedure_id";
> >>
> >> query += " INNER JOIN providers ON schedules.provider_id =
> >> providers.provider_id";
> >>
> >> query += " WHERE schedule_date = CURDATE()";
> >>
> >> query += " ORDER BY procedure_name";
> >>
> >> DataContext context = DataContext.getThreadDataContext();
> >>
> >> SQLTemplate rawSelect = new SQLTemplate(Schedules.class, query);
> >>
> >> List records = context.performQuery(rawSelect);
> >>
> >> return records;
> >>
> >> }
> >>
> >> ----- Original Message ----- From: "Christian Mittendorf"
> >> <christian.mittendorf@freenet.de>
> >> To: <user@cayenne.apache.org>
> >> Sent: Thursday, February 01, 2007 7:16 PM
> >> Subject: Re: how to call a custom query
> >>
> >>
> >>> Please check out the documentation at the great new Cayenne homepage:
> >>>
> >>> http://cayenne.apache.org/doc20/queries.html
> >>>
> >>> ...especially the part on SQLTemplates
> >>>
> >>> Christian
> >>>
> >>> P.S. The link to the API  (http://cayenne.apache.org/1_2/api/ cayenne/
> >>> org/objectstyle/cayenne/query/package-summary.html) from  the 1.2
> >>> documentation returns a 404 error....
> >>>
> >>>
> >>> Am 02.02.2007 um 01:02 schrieb Frank:
> >>>
> >>>> Can anyone help me with the a short example on how to do this?
> >>>>
> >>>> Thanks
> >>>>
> >>>> Frank
> >>>> ----- Original Message ----- From: "Frank" <farocco@hotmail.com>
> >>>> To: <user@cayenne.apache.org>
> >>>> Sent: Thursday, February 01, 2007 11:33 AM
> >>>> Subject: how to call a custom query
> >>>>
> >>>>
> >>>>> Hello,
> >>>>>
> >>>>> I have the following raw query defined.
> >>>>> SELECT BSYDTAA.BSYPEMP.EMHSP#, BSYDTAA.BSYPEMP.EMYLNM,
> >>>>> BSYDTAA.BSYPEMP.EMYFNM, BSYDTAC.BPRPPCP.PCDEP4,
> >>>>> BSYDTAC.BPRPPCP.PCLDDS, BSYDTAA.BSYPEMP.EMEMP# AS EMEMP,
> >>>>> BSYDTAA.BSYPEMP.EMWPH# AS WPHONE FROM BSYDTAA.BSYPEMP,
> >>>>> BSYDTAC.BPRPPCP WHERE BSYDTAA.BSYPEMP.EMHSP# = 
> >>>>> BSYDTAC.BPRPPCP.PCHSP#
> >>>>> AND BSYDTAA.BSYPEMP.EMDEP4 =  BSYDTAC.BPRPPCP.PCDEP4 AND
> >>>>> (BSYDTAA.BSYPEMP.EMHSP# IN (1,5)) AND  (BSYDTAA.BSYPEMP.EMDOT=0)
> >>>>> AND EMEMP# = ?
> >>>>>
> >>>>> How do I call this from code using the SelectQuery and passing 
in
> >>>>> the value?
> >>>>>
> >>>>> Thanks
> >>>>>
> >>>>> Frank
> >>>>>
> >>>>
> >>>
> >>
> >
> > Marcin
> >
> >
> >
> >
>
>


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