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From: Michael Gentry <blacknext@gmail.com>
Date: Mon, 14 Aug 2017 08:07:15 -0400
Message-ID: <CAOy5kzM=Nx7HQvNr4XpdfOVBU5CEpY0YkDPyejn3aMdODYZpmA@mail.gmail.com>
Subject: Re: Cayenne own template renderer to replace Velocity
To: Cayenne Development <dev@cayenne.apache.org>
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archived-at: Mon, 14 Aug 2017 12:07:52 -0000

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Yes, but that's us kind of forcing a version of Velocity upon our users
rather than them choosing the version that works with their environment.
Sure, they can do dependency exclusions, etc, in the POM, but that's a
slight hassle.  If we choose a 'provided' scope, won't that work and be
better?  It'll be up to them to include the version of Velocity they want
in their POM and there won't be multiple versions provided, at least not
due to us.

Thanks,

mrg


On Mon, Aug 14, 2017 at 7:35 AM, Nikita Timofeev <ntimofeev@objectstyle.com>
wrote:

> Cayenne-velocity module should use version of Velocity we specify, the
> main point is that cayenne-server won't use it anymore.
> As for explicit "compile" scope that's just copy-past, it can be
> omitted as it's default anyway.
>
> On Mon, Aug 14, 2017 at 2:16 PM, Michael Gentry <blacknext@gmail.com>
> wrote:
> > Won't a compile scope pull in a version of Velocity we specify?
> >
> > https://github.com/apache/cayenne/pull/238/files#diff-
> e286320b0b1da27d2621bf787ddd75b1R48
> >
> >
> > On Fri, Aug 11, 2017 at 7:23 AM, Andrus Adamchik <andrus@objectstyle.org
> >
> > wrote:
> >
> >> > I'm assuming the template engine will be injectable
> >>
> >> Yes, and even better. With module auto-loading, you simply put your
> >> template engine jar on classpath, and you get it installed
> automatically.
> >> This is how backwards-compatible cayenne-velocity will operate.
> >>
> >> Andrus
> >>
> >>
> >> > On Aug 11, 2017, at 2:21 PM, Michael Gentry <blacknext@gmail.com>
> wrote:
> >> >
> >> > I haven't looked into the details, but I like the idea of reducing
> >> > dependencies upon external libraries, which can cause headaches with
> >> > applications using Cayenne.
> >> >
> >> > I'm assuming the template engine will be injectable so that you can
> >> choose
> >> > Velocity, Freemarker, etc if you'd like?  (Of course, you might have
> to
> >> > create a bridge to your template engine of choice, but be able to
> inject
> >> > that bridge into Cayenne.)
> >> >
> >> > Thanks,
> >> >
> >> > mrg
> >> >
> >> >
> >> > On Thu, Aug 10, 2017 at 5:35 AM, Nikita Timofeev <
> >> ntimofeev@objectstyle.com>
> >> > wrote:
> >> >
> >> >> Hi all,
> >> >>
> >> >> I've opened a PR [1] just now with new SQLTemplateProcessor
> >> >> implementation based on new Cayenne own parser (instead of Velocity).
> >> >>
> >> >> It doesn't support all features of Velocity but it's enough to
> >> >> seamlessly replace Velocity in all core and test code in Cayenne,
> plus
> >> >> it's faster (up to x15 in case of cache hit) and should have less
> >> >> memory footprint (though I've only checked speed and memory is my
> >> >> guess as new parser smaller and have no runtime).
> >> >>
> >> >> Plus cayenne-server now free of velocity and commons-lang
> >> >> dependencies, next step will be removing of commons-collections (it
> >> >> will be the last one).
> >> >>
> >> >> VelocitySQLTemplateProcessor now comes in optional auto-loaded module
> >> >> (cayenne-velocity), so if you relied on some advanced features of
> >> >> Velocity in your SQLTemplates you still can use it. And Velocity is
> >> >> still used for cgen templates.
> >> >>
> >> >> See PR [1] and Jira ticket [2] for details.
> >> >>
> >> >> Any thoughts or concerns?
> >> >>
> >> >> [1] https://github.com/apache/cayenne/pull/238
> >> >> [2] https://issues.apache.org/jira/browse/CAY-2345
> >> >>
> >> >> --
> >> >> Best regards,
> >> >> Nikita Timofeev
> >> >>
> >>
> >>
>
>
>
> --
> Best regards,
> Nikita Timofeev
>

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