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From "Marcel Offermans (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FELIX-3395) Make preferences persistence location configurable
Date Wed, 14 Mar 2012 21:38:39 GMT

    [ https://issues.apache.org/jira/browse/FELIX-3395?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13229654#comment-13229654
] 

Marcel Offermans commented on FELIX-3395:
-----------------------------------------

Instead of making it non-final, I just committed a small patch that adds a new constructor
that allows you to explicitly set the root directory. Once set, I think it makes sense that
this property is final.
                
> Make preferences persistence location configurable
> --------------------------------------------------
>
>                 Key: FELIX-3395
>                 URL: https://issues.apache.org/jira/browse/FELIX-3395
>             Project: Felix
>          Issue Type: Wish
>          Components: Preferences Service
>            Reporter: Pieter
>
> I want Preference Service to persist stored preferences and have them survive system
restarts. Preference Service stores its stuff in the OSGi frameworks' cache region, which
get cleared on restart (by Pax Runner, which is what I use). Trying to get around this was
problematic, so I figured it would be nice to be able have the preferences database outside
the cache directory. A system property like "felix.prefs.rootdir" could be used to set the
location.
> I patched the Preference Service from trunk to get this feature and the changes are minimal,
I just added the following lines to the DataFileBackingStoreImpl constructor:
>         String configuredRootDir = System.getProperty("felix.prefs.rootdir");
>         this.rootDirectory = configuredRootDir == null ? context.getDataFile("") : new
File(configuredRootDir);
>         this.rootDirectory.mkdirs();

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