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From "Fabien Nisol (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CONFIGURATION-447) DefaultConfigurationBuilder should provide default provider for environment variables
Date Mon, 18 Apr 2011 15:01:06 GMT
DefaultConfigurationBuilder should provide default provider for environment variables
-------------------------------------------------------------------------------------

                 Key: CONFIGURATION-447
                 URL: https://issues.apache.org/jira/browse/CONFIGURATION-447
             Project: Commons Configuration
          Issue Type: Improvement
    Affects Versions: 1.6
            Reporter: Fabien Nisol
            Priority: Trivial


DefaultConfigurationBuilder does not provide a way to merge environment variable into the
configuration

eg:

{code}
<configuration>
  <env/>
  ...
</configuration>
{code}

I think this could be implemented by adding the following code into the DefaultConfigurationBuilder
class

{code:title=DefaultConfigurationBuilder.java}

//Constant for the provider for environment variables.
private static final ConfigurationProvider ENV_PROVIDER = new ConfigurationProvider(
            EnvironmentConfiguration.class);

//An array with the names of the default tags.
 private static final String[] DEFAULT_TAGS =
     {"properties", "xml", "hierarchicalXml", "jndi", "system", "plist", "configuration","env"};

    
//An array with the providers for the default tags.
 
     private static final ConfigurationProvider[] DEFAULT_PROVIDERS =
     {PROPERTIES_PROVIDER, XML_PROVIDER, XML_PROVIDER, JNDI_PROVIDER,
             SYSTEM_PROVIDER, PLIST_PROVIDER, BUILDER_PROVIDER,ENV_PROVIDER};
{code}


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