[jira] [Created] (SLING-3671) Atom Taglib: tag attribute requirements to do not reflect standard's definition

["Christoph Dahlen (JIRA)" <ji...@apache.org>]

Christoph Dahlen created SLING-3671:
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             Summary: Atom Taglib: tag attribute requirements to do not reflect standard's definition
                 Key: SLING-3671
                 URL: https://issues.apache.org/jira/browse/SLING-3671
             Project: Sling
          Issue Type: Improvement
          Components: Scripting
    Affects Versions: Scripting JSP-Atom-Taglib 1.0.0
            Reporter: Christoph Dahlen


The current [TLD|http://svn.apache.org/repos/asf/sling/trunk/contrib/scripting/jsp-taglib-atom/src/main/resources/META-INF/atom.tld] for the Atom taglib allows creating Atom Feeds that do not meet the standard's requirements.

Most simple example: 
{code:xml}
<atom:feed><atom:entry /></atom:feed>
{code}

will create the following output 
{code:xml}
<feed xmlns="http://www.w3.org/2005/Atom"><updated>2014-06-16T12:39:03.382Z</updated><entry /></feed>
{code}

This output fails to [validate|http://validator.w3.org/feed/] due to missing, but mandatory elements "id" and "title" for _feed_ and _entry_ and missing element "updated" for _entry_.

According to http://atomenabled.org/ the required elements for both [feed|http://atomenabled.org/developers/syndication/#requiredFeedElements] and [entry|developers/syndication/#requiredEntryElements] are:
* id
* title
* updated

Enforcing this requirements would require the following changes:
# make the "id" attribute required for _feed_ and _entry_ element
# either
## make the "updated" attribute required for _feed_ and _entry_ OR
## auto-compute the updated attribute for _entry_, as it is obviously done for the _feed_ element
# replace the "title" element by a "title" attribute for _entry_ and _feed_ and make it mandatory.

Comments on the feasibility are very welcome.



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