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From "Emmanuel Bourg (Resolved) (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (CONFIGURATION-467) Unable to persist CombinedConfiguration changes to the Filesystem.
Date Fri, 21 Oct 2011 13:26:35 GMT

     [ https://issues.apache.org/jira/browse/CONFIGURATION-467?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Emmanuel Bourg resolved CONFIGURATION-467.
------------------------------------------

    Resolution: Duplicate
    
> Unable to persist CombinedConfiguration changes to the Filesystem.
> ------------------------------------------------------------------
>
>                 Key: CONFIGURATION-467
>                 URL: https://issues.apache.org/jira/browse/CONFIGURATION-467
>             Project: Commons Configuration
>          Issue Type: Improvement
>          Components: File reloading
>    Affects Versions: 1.6
>         Environment: Linux java
>            Reporter: raghutpk
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> I use a config.xml file to load multiple Configuration Sources 
> Ex: 
> {code:xml}
> <configuration>
>   <header/>
>   <override>
>     <properties fileName="db.properties"/>
>     <properties fileName="jms.properties"/>
>     <xml fileName="gui.xml"/>
>   </override>
>   <additional/>
> </configuration>
> {code}
> I load the config.xml and subsequently all the properties in my app to a CombinedConfiguration
Object as follows :
> {code:java}
> DefaultConfigurationBuilder builder = new DefaultConfigurationBuilder();
> builder.setFile(new File("config.xml"));
> CombinedConfiguration combinedConfig = builder.getConfiguration(true);
> {code}
> Now I am trying to expose all the properties from all configuration sources using a mbean
and at runtime trying to update the Properties. I wouldn't know though, from which source
the properties came from as the CombinedConfiguration takes care of that abstraction, but
when I do the following it doesn't change the persistance store(in this case the files on
the Filesystem).
> /*combinedConfig.setProperty(Key, updatedValue);*/
> There is no save method on the combinedConfiguration class so that the persistance store
gets updated.
> There is a save method in PropertiesConfiguration class or XMLConfiguration class, but
I wouldn't know at runtime or inside the code which file or configuration source the Key belongs
to, so even If I add a config-name to each source there is no use. 
> SO wouldn't the setProperty help me update the value of the Configuration and persist
it back to the original file. I don't know it is a bug or a feature it doesn't support or
there is a workaround in such scenarios. 
> Please advice.

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