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From "raghutpk (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CONFIGURATION-467) Unable to persist CombinedConfiguration changes to the Filesystem.
Date Fri, 21 Oct 2011 04:54:33 GMT
Unable to persist CombinedConfiguration changes to the Filesystem.
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                 Key: CONFIGURATION-467
                 URL: https://issues.apache.org/jira/browse/CONFIGURATION-467
             Project: Commons Configuration
          Issue Type: Bug
          Components: File reloading
    Affects Versions: 1.6
         Environment: Linux java
            Reporter: raghutpk
             Fix For: 1.8




I use a config.xml file to load multiple Configuration Sources 
Ex: 
<configuration>
<header/>
<override>
<properties fileName="db.properties"/>
<properties fileName="jms.properties"/>
<xml fileName="gui.xml"/>
</override>
<additional/>
</configuration>

I load the config.xml and subsequently all the properties in my app to a CombinedConfiguration
Object as follows :

DefaultConfigurationBuilder builder = new DefaultConfigurationBuilder();
builder.setFile(new File("config.xml"));
CombinedConfiguration combinedConfig = builder.getConfiguration(true);


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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