Adding new details to a running cayenne persistence system

From: Benjamin Podszun (be..alactic-tales.de)
Date: Thu Sep 15 2005 - 05:00:55 EDT

  • Next message: Andrus Adamchik: "Re: Adding new details to a running cayenne persistence system"

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    Hi there.

    I'm very new to cayenne. I read (most of) the docs online and some
    samples, but I still have a specific question that might be obvious
    (I just read yet, didn't start a cayenne project) but is quite
    crucial for my course of development:

    I'm currently building a web application that supports modules. That
    is: I want to enhance the web application by loading a custom jar
    without any downtime. Every module should be allowed to add something
    to the datastore. Say, an addressbook would add a "contact" to the
    database.
    I'm coming from hibernate and I've great headaches trying to build
    something like that with the framework, so my question boils down to:
    "Can I tell cayenne to include this new data object X, for which I've
    to modify/enhance the schema of course, while it runs?"

    Any help would be great here..

    Thanks in advance,
    Ben
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