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From "Mike Kienenberger" <mkien...@gmail.com>
Subject Re: Reengineer Database Schema ant task
Date Thu, 15 Nov 2007 16:22:01 GMT
For what it's worth, it's simple enough to call the schema generator
just by adding the modeler jar file to the classpath, so I'd expect
the reengineer task to be equally easy:

            boolean notCleanState = true;

            DbGenerator dbGenerator = new DbGenerator(dbAdapter, dataMap);

            dbGenerator.setShouldDropTables(notCleanState);
            dbGenerator.setShouldDropPKSupport(notCleanState);
            dbGenerator.setShouldCreatePKSupport(true);
            dbGenerator.setShouldCreateTables(true);

            dbGenerator.setShouldCreateFKConstraints(false);
            dbGenerator.runGenerator(dataSource);



On 11/15/07, Kevin Menard <kmenard@servprise.com> wrote:
> Off-hand, I can't say for certain.  But, I had originally ported cgen (or
> maybe cdbgen, I don't recall), based on the code in the modeler and it was
> quite straightforward.  Most of the modeler code is pretty well segmented
> and you should be able to make calls into it by just adding the modeler JAR
> to your classpath.
>
> You may find it beneficial to yank it out into a utility class, though.  If
> you do that and attach it to the JIRA, that's most of the hardwork in making
> it an ant task anyway.
>
> --
> Kevin
>
>
> On 11/15/07 10:52 AM, "Dave Merrin" <dmerrin@ipasystems.co.uk> wrote:
>
> > Hi Kevin,
> >
> > can I make direct use of a function in the Modeler jar to instantiate a
> > generate from my own app?
> >
> > It would be good in Cayenne but I think it will be a long time before I
> > move to version 3. I don't want somebody to do all the work and it never
> > gets used.
> >
> > Cheers,
> >
> > Dave
> >
> > Kevin Menard wrote:
> >> Hi Dave,
> >>
> >> There is not currently any ant task for that.  The expectation has been that
> >> you would generate the datamap once from the modeler, and then use the cgen
> >> ant task to generate the classes.  Now that Tore has added code in the
> >> modeler for merging changes between the DB and the datamap, it may be
> >> worthwhile to add some sort of ant task for that.
> >>
> >> If it is something you'd like to see in 3.0, please file a JIRA and it'll
> >> get reviewed.
> >>
> >>
> >> On 11/15/07 9:05 AM, "Dave Merrin" <dmerrin@ipasystems.co.uk> wrote:
> >>
> >>
> >>> Hi,
> >>>
> >>> is there an ant task to reengineer the database as you can with Cayenne
> >>> Modeler?
> >>>
> >>> Cheers,
> >>>
> >>> Dave
> >>>
> >>
> >>
> >
>
> --
> Kevin Menard
> Servprise International, Inc.
> Remote reboot & power control for network equipment
> www.servprise.com              +1 508.892.3823 x308
>
>

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