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Re: Database implementation of java.util.prefs.Preferences?

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In article <k3dgu8$k1h$1@dont-email.me>, markspace <-@.> wrote:

> On 9/19/2012 1:51 PM, Marcin wrote:
> >
> > I have a Java program that uses java.util.prefs.Preferences to 
> > store configuration data. Everything is OK if one user works on one 
> > computer but if one user can use many computers the data is not 
> > shared between workstations and "environment" is different 
> > dependent on which computer user is logged in. I think I can store 
> > the same data in database because application uses connection to 
> > database for other purposes. Do you know any implementation of 
> > abstract class java.util.prefs.Preferences  that uses SQL to store 
> > the configuration data? I cannot google anything
> 
> 
> I would kind of doubt there is one.  In a situation like this, I 
> would consider using Preferences::exportSubtree() and 
> Preferences::importPreferences() to read and write to a blob in a 
> database.
> 
> I'd think carefully about it first though, as something about it 
> feels like a mismatch for a preferences module in general.

"There are two separate trees of preference nodes, one for user 
preferences and one for system preferences." Instead of SQL, just start 
from systemRoot() for shared preferences.

<http://docs.oracle.com/javase/7/docs/api/java/util/prefs/Preferences.html>

-- 
John B. Matthews
trashgod at gmail dot com
<http://sites.google.com/site/drjohnbmatthews>

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Database implementation of java.util.prefs.Preferences? Marcin <nomail@nospam.com> - 2012-09-19 22:51 +0200
  Re: Database implementation of java.util.prefs.Preferences? markspace <-@.> - 2012-09-19 15:28 -0700
    Re: Database implementation of java.util.prefs.Preferences? "John B. Matthews" <nospam@nospam.invalid> - 2012-09-19 20:59 -0400
      Re: Database implementation of java.util.prefs.Preferences? markspace <-@.> - 2012-09-19 19:07 -0700
        Re: Database implementation of java.util.prefs.Preferences? "John B. Matthews" <nospam@nospam.invalid> - 2012-09-20 12:20 -0400
  Re: Database implementation of java.util.prefs.Preferences? Roedy Green <see_website@mindprod.com.invalid> - 2012-09-21 07:12 -0700
    Re: Database implementation of java.util.prefs.Preferences? "John B. Matthews" <nospam@nospam.invalid> - 2012-09-21 21:10 -0400
  Re: Database implementation of java.util.prefs.Preferences? Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2012-09-21 10:19 -0700

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