Re: CayenneModeler plugin environment

From: Andrus Adamchik (andru..bjectstyle.org)
Date: Sun Jul 23 2006 - 00:13:48 EDT

  • Next message: Ahmed Mohombe: "Re: CayenneModeler plugin environment"

    On Jul 22, 2006, at 11:52 PM, Kevin Duffey wrote:
    > I have not joined the cayenne-dev list, so I may not see some
    > replies. I am on about 17 mailing lists right now and while I do
    > not mean any offense, I don't have the time to start developing on
    > a new project.

    Certainly no offense, but see related comments below.

    > A few thoughts since Andrus has emailed Evert and I. First, I would
    > like to explore Evert's "2.0" codebase a bit, possibly with Evert
    > and Andrus on IM if there is any possibility we can all three meet.
    > I know I am in California, PST and Evert is Netherlands. I am on
    > Yahoo IM as is Evert if Andrus, you could maybe join up (if you
    > dont have Yahoo account) and meet with us, or we can log in to any
    > IRC server (usually EFNET works well) and chat in a private
    > channel. Does this work for you Andrus... if so, yahoo/irc? Anyone
    > else on the cayenne project is welcome to join as well.

    We are (almost) an Apache project, so we do things via mailing lists.
    I would suggest to do the same here, and avoid the timezone mismatch
    problems at the same time :-) To save you from the flood of unrelated
    traffic on cayenne-dev, I just subscribed to platonos-plugeng-dev.
    Let's communicate via that list, so there will be a track record for
    anybody who would want to jump on it later. This is important.

    > The 2.0 codebase is a rewrite of the engine from scratch. It shares
    > many of the same ideas, especially at the classloader level, but we
    > ran into some snags with plugin dependencies (primarily circular
    > references where plugin A depends on B, B on C and C on A.. not a
    > good thing to do).

    I still need to check out 2.0. Hopefully I'll have time tomorrow.

    > As well, Evert, who did most of the unload coding of plugins,
    > learned that there is quite a problem in trying to unload plugins
    > once one plugin grabs a ref to any class in another plugin. I used
    > to contribute to the Eclipse Equniox project, and learned from them
    > that they basically unload the entire plugin stack to do a runtime
    > reload of just a single plugin, depending on the dependency
    > complexities. Anyway, don't want to delve into that now, just a
    > heads up of why the 2.0 codebase may be the way to go, especially
    > if a few of you on the cayenne project will help contributes to it
    > (both code and ideas).

    Just like you don't want to delve into Cayenne, we'll probably just
    be the "active observers" :-)

    Andrus



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