[CONFIGURATION-467] Unable to persist CombinedConfiguration changes to the Filesystem.

• Type: Improvement
• Status: Reopened
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.6
• Fix Version/s: 2.x
• Component/s: File reloading

Environment

Linux java

• Assignee: Unassigned
• Reporter: raghutpk
• Created: 21/Oct/11 04:52
• Updated: 24/Mar/16 20:12

Description

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.

Issue Links

• duplicates: CONFIGURATION-159 Save the changes made to a Composite/CombinedConfiguration