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https://issues.apache.org/jira/browse/CONFIGURATION-442?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13079572#comment-13079572
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Fabien Nisol commented on CONFIGURATION-442:
--------------------------------------------
It does ! Thanks :)
> SubsetConfiguration does not properly list attributes when a delimiter is set
> -----------------------------------------------------------------------------
>
> Key: CONFIGURATION-442
> URL: https://issues.apache.org/jira/browse/CONFIGURATION-442
> Project: Commons Configuration
> Issue Type: Bug
> Affects Versions: 1.6
> Environment: all
> Reporter: Fabien Nisol
>
> imagine a XmlConfiguration like this:
> {code}
> <properties>
> <prop1>
> <prop2>
> <prop
> attr1="attr1"
> attr2="attr2"/>
> </prop2>
> </prop1>
> </properties>
> {code}
> If subset get instanciated to the end of the hierarchy, with a specific
> delimiter, getKeys() won't return the correct keys:
> {code}
> ...
> XMLConfiguration config = new XMLConfiguration("test/test.xml");
> Configuration subset = new SubsetConfiguration(config,"prop1.prop2.prop",".");
> ConfigurationUtils.dump(subset, System.err);
> ...
> {code}
> gives the result:
> {code}
> @attr1]=null
> @attr2]=null
> {code}
> it should give the result
> {code}
> [@attr1]=attr1
> [@attr2]=attr2
> {code}
> The wrong dump is a side effect of the wrong implementation of the
> _getChildKey_ method of SubsetConfiguration
> {code}
> /**
> * Return the key in the subset configuration associated to the specified
> * key in the parent configuration.
> *
> * @param key The key in the parent configuration.
> * @return the key in the context of this subset configuration
> */
> protected String getChildKey(String key)
> {
> if (!key.startsWith(prefix))
> {
> throw new IllegalArgumentException("The parent key '" + key + "'
> is not in the subset.");
> }
> else
> {
> String modifiedKey = null;
> if (key.length() == prefix.length())
> {
> modifiedKey = "";
> }
> else
> {
> int i = prefix.length() + (delimiter != null ?
> delimiter.length() : 0);
> modifiedKey = key.substring(i);
> }
> return modifiedKey;
> }
> }
> {code}
> In this code, the _else_ part is wrong. In a hierarchical configuration, the
> attribute delimiter is '[' and is removed here.
> I think a more correct code would be :
> {code}
> /**
> * Return the key in the subset configuration associated to the specified
> * key in the parent configuration.
> *
> * @param key The key in the parent configuration.
> * @return the key in the context of this subset configuration
> */
> protected String getChildKey(String key)
> {
> if (!key.startsWith(prefix))
> {
> throw new IllegalArgumentException("The parent key '" + key + "'
> is not in the subset.");
> }
> else
> {
> String modifiedKey = null;
> if (key.length() == prefix.length())
> {
> modifiedKey = "";
> }
> else
> {
> modifiedKey = key.substring(prefix.length());
> if(delimiter!=null && modifiedKey.startsWith(delimiter))
> {
> modifiedKey=modifiedKey.substring(delimiter.length());
> }
> }
> return modifiedKey;
> }
> }
> {code}
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