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From "Oliver Heger (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (CONFIGURATION-241) clearProperty() does not generate events
Date Sat, 02 Dec 2006 18:47:22 GMT
     [ http://issues.apache.org/jira/browse/CONFIGURATION-241?page=all ]

Oliver Heger resolved CONFIGURATION-241.
----------------------------------------

    Fix Version/s: Nightly Builds
       Resolution: Fixed

Fixed now in subversion. Thank you for spotting this.

> clearProperty() does not generate events
> ----------------------------------------
>
>                 Key: CONFIGURATION-241
>                 URL: http://issues.apache.org/jira/browse/CONFIGURATION-241
>             Project: Commons Configuration
>          Issue Type: Bug
>    Affects Versions: 1.3 Final
>         Environment: Java 1.5, Windows XP
>            Reporter: Mike Whittemore
>             Fix For: Nightly Builds
>
>
> I am loading configuration information from multiple sources and have registered a listener
with the resulting configuration object. Unfortunately the listener does not receive "clear
property" events. I've confirmed that it can properly receive other events (like "set property"),
and that calls to "clearProperty()" do actually clear the property, so I believe this may
be a bug in commons-configuration. I've tried setting "details" to true, which had no effect.
Below is a watered down version of what I am doing (note, my configuration file simply pulls
in a property file containing this property: name.first=Mike):
> ConfigurationFactory configurationFactory = new ConfigurationFactory();
> URL configFileURL = ... get the config file ...
> configurationFactory.setConfigurationURL(configFileURL);
> Configuration configuration = ConfigurationFactory.getConfiguration();
> configuration.addConfigurationListener(new ConfigurationListener() {
>     public void configurationChanged(ConfigurationEvent e) {
>         System.out.println(e.getPropertyName() + ": " + e.getPropertyValue());
>     }
> });
> System.out.println(configuration.getProperty("name.first")); // prints "Mike"
> configuration.claerProperty("name.first")); // no output whatsoever
> System.out.println(configuration.getProperty("name.first")); // prints "null"

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