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From Ioan Eugen Stan <stan.ieu...@gmail.com>
Subject factor-out commons-configuration
Date Sun, 13 Jan 2013 06:35:23 GMT

I've added Jean Baptiste and Robert Munteanu, who are not subscribed.
JB, Robert, feel free to not participate if you are not
interested/don't have time.

Eric, your help is needed.

I wish to refactor out commons-configuration in favor for a more OSGi
friendly option. I'm still researching a good solution and I'm also
open to suggestions. The main driver is to make it more OSGi friendly,
simplify things under the constraints defined by [a].
Commons-configuration brings a lot of commons-* dependencies which I
would like to see gone (less is more).

I have two options: java.util.prefs.Preferences [1]- [6] and OSGi
Configuration Admin [7]-[9].

Configuration admin has a simple interface but depend on one osgi
artifact, while Preferences are standard Java. Other than that they
seem to be equal with regard to features, also support what
commons-configuration has to offer. I believe support all the
restrictions defined by [a].

Thank you,

Important James Issues related to this:
[a] https://issues.apache.org/jira/browse/JAMES-495

[1] http://docs.oracle.com/javase/1.4.2/docs/api/java/util/prefs/Preferences.html
[2] http://docs.oracle.com/javase/1.5.0/docs/guide/preferences/index.html#prefs-other
[3] http://code.google.com/p/java-util-prefs-jdbc-backend/
[4] http://devlearnings.wordpress.com/2010/11/12/use-java-util-prefs-preferences-instead-of-java-util-properties/
[5] http://www.davidc.net/programming/java/java-preferences-using-file-backing-store
[6] http://docs.oracle.com/javase/1.5.0/docs/api/java/util/prefs/Preferences.html#addNodeChangeListener(java.util.prefs.NodeChangeListener)

[7] http://www.osgi.org/javadoc/r4v42/org/osgi/service/cm/ManagedService.html
[8] http://stackoverflow.com/questions/10225467/how-to-externalize-the-configuration-of-bundles
[9] http://felix.apache.org/site/apache-felix-config-admin.html

Ioan Eugen Stan / CTO / http://axemblr.com

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