I like the idea of detecting the presence of a JMX implementation and starting the service if it exists. We'd still have to indicate exactly what JMX implementations and versions we have tested with (and provide links to the download page), so that users know what will work.

That said, if we *can* redistribute MX4J and we think it works well, redistributing it would be a nice thing to do for our users, so they don't have to take an extra step to be able to get JMX functionality for Derby.

The nice thing is for anyone using JDK 1.5 or higher this is a non-issue.

What about J2ME, are there versions of J2ME that we support that don't come with JMX, or are we covered?

Thanks,

David

Andrew McIntyre wrote:
If the goal is to repackage any of these, I'm not sure that will be
possible with any of the following, except for Apache Commons
Modelling, but is that actually an implementation?

For information on compatibility of other open source licenses with
the ASL, see: http://people.apache.org/~cliffs/3party.html

On 7/13/06, Sanket Sharma <[EMAIL PROTECTED]> wrote:
Just wanted an opinion about JMX implementation to use for Derby. I
have listed the better known implementations below with my comments:

1. For Sun JDK/JVM prior to version 1.5 Sun's references implemenation is available as a seperate jar download. Applications running on JVM 1.3
            and 1.4 will need to download install this jar.

We can't repackage this jar, as the terms of Sun's BCL are
incompatible with the ASL. But perhaps we could detect its presence
and start the JMX services if an implementation is present.

         2. XMOJO Project

This is GPL licensed. Currently ASF policy is not to redistribute
GPL-licensed jars.

         3. Apache Commons Modeller framework

Sounds like this would aid your development, but do you still need an
implementation? At any rate, we could repackage it if its needed at
runtime.

         4. MX4J

This has a modified BSD license with an advertising clause, and a
restriction to downstream projects on naming. Not that we'd ever name
our project MX4J, but it's an extra restriction that isn't in the ASL,
so we might need to get a determination from legal-discuss on whether
this is acceptable to redistribute.

andrew

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