[jira] Commented: (JCR-240) locally remapped xml namespace cannot be 'reverted'

["Tobias Strasser (JIRA)" <ji...@apache.org>]

    [ http://issues.apache.org/jira/browse/JCR-240?page=comments#action_12331390 ] 

Tobias Strasser commented on JCR-240:
-------------------------------------

LocalNamespaceMappings should check if already 'hidden':

[...]
        // special case: prefixes xml*
        if (prefix.toLowerCase().startsWith(QName.NS_XML_PREFIX)) {
            // if the global prefix is hidden, allow reverting
            if (!hiddenPrefixes.contains(prefix)) {
                throw new NamespaceException("reserved prefix: " + prefix);
            }
        }
[...]

> locally remapped xml namespace cannot be 'reverted'
> ---------------------------------------------------
>
>          Key: JCR-240
>          URL: http://issues.apache.org/jira/browse/JCR-240
>      Project: Jackrabbit
>         Type: Bug
>  Environment: r294964
>     Reporter: Tobias Strasser
>     Assignee: Tobias Strasser
>     Priority: Minor

>
> the following throws an exception, but should work:
> // remap xml namespace -> works
> Session.setNamespacePrefix("foobar", "http://www.w3.org/XML/1998/namespace");
> // revert mapping -> throws exception
> Session.setNamespacePrefix("xml", "http://www.w3.org/XML/1998/namespace");

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