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https://issues.apache.org/jira/browse/DAFFODIL-2422?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17219260#comment-17219260
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Steve Lawrence commented on DAFFODIL-2422:
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So it sounds like there is only an issue if someone wants to use ContentHandler
that requires getting namespace information from xmlns attributes? Seems not
likely, since parsing xmlns attributes is pretty inefficient, especially
considering we support all the other more efficient ways of getting namespace
information.
> Implement allowed features for DaffodilXMLReader/DaffodilOutputContentHandler
> ------------------------------------------------------------------------------
>
> Key: DAFFODIL-2422
> URL: https://issues.apache.org/jira/browse/DAFFODIL-2422
> Project: Daffodil
> Issue Type: Bug
> Components: API
> Reporter: Olabusayo Kilo
> Priority: Major
>
> The DaffodilXMLReader reader allows you to set/get the
> Namespace/Namespace-Prefixes features, but it actually doesn't implement them
> when passing info to a ContentHandler, as is required by the documentation.
> Since the XMLReader is expected to work with any ContentHandler, this can
> lead to unexpected results. We need to update the XMLReader to send the
> appropriate stuff to the ContentHandler (which within our implementation is
> via the SAXInfosetOutputter), and to mimic the behavior expected of it in the
> [XMLReader Documentation
> title|https://docs.oracle.com/javase/7/docs/api/org/xml/sax/XMLReader.html]
>
> The table is an excerpt from the [SAX Documentation|#package_description]]
> ||Feature ID||Access||Default||Description||
> |namespaces|_read/write_|true|A value of "true" indicates namespace URIs and
> unprefixed local names for element and attribute names will be available.|
> |namespace-prefixes|_read/write_|false|A value of "true" indicates that XML
> qualified names (with prefixes) and attributes (including _xmlns*_
> attributes) will be available.|
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