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From "Andreas Veithen (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (AXIOM-441) Unable to parse XML with empty default namespace attribute value with OpenJDK StAX implementation
Date Wed, 14 Nov 2012 08:18:12 GMT

     [ https://issues.apache.org/jira/browse/AXIOM-441?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Andreas Veithen updated AXIOM-441:
----------------------------------

    Summary: Unable to parse XML with empty default namespace attribute value with OpenJDK
StAX implementation  (was: Fails to parse XML with empty default namespace attribute value)
    
> Unable to parse XML with empty default namespace attribute value with OpenJDK StAX implementation
> -------------------------------------------------------------------------------------------------
>
>                 Key: AXIOM-441
>                 URL: https://issues.apache.org/jira/browse/AXIOM-441
>             Project: Axiom
>          Issue Type: Bug
>          Components: API, LLOM
>    Affects Versions: 1.2.13
>            Reporter: Paul Millar
>            Assignee: Andreas Veithen
>              Labels: patch
>             Fix For: 1.2.14
>
>         Attachments: patch-fix-StAXOMBuilder.diff
>
>
> From:
>     http://www.w3.org/TR/2009/REC-xml-names-20091208/
> "The attribute value in a default namespace declaration MAY be empty. This has the same
effect, within the scope of the declaration, of there being no default namespace."
> Here is a document that demonstrates this:
> <?xml version='1.0' encoding='UTF-8'?>
> <foo xmlns='http://example.org/'>
>     <bar xmlns=''>value</bar>
> </foo>
> The following code snippet (slightly modified from Axiom documentation) uses Axiom to
parse a String variable xmlData:
>         InputStream in =
>                 new ByteArrayInputStream(xmlData.getBytes(Charset.forName("UTF-8")));
>         OMXMLParserWrapper builder = OMXMLBuilderFactory.createOMBuilder(in);
>         OMElement documentElement = builder.getDocumentElement();
>         documentElement.serialize(System.out);
>         System.out.println();
> When given the above XML example, an IllegalArgumentException is thrown:
> Exception in thread "main" java.lang.IllegalArgumentException: Namespace URI may not
be null
> 	at  org.apache.axiom.om.impl.llom.OMNamespaceImpl.<init>(OMNamespaceImpl.java:38)
> 	at org.apache.axiom.om.impl.llom.OMElementImpl.addNamespaceDeclaration(OMElementImpl.java:430)
> 	at org.apache.axiom.om.impl.builder.StAXOMBuilder.processNamespaceData(StAXOMBuilder.java:608)
> 	at org.apache.axiom.om.impl.builder.StAXOMBuilder.populateOMElement(StAXOMBuilder.java:430)
> 	at org.apache.axiom.om.impl.builder.StAXOMBuilder.createOMElement(StAXOMBuilder.java:461)
> 	at org.apache.axiom.om.impl.builder.StAXOMBuilder.createNextOMElement(StAXOMBuilder.java:318)
> 	at org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:249)
> 	at org.apache.axiom.om.impl.llom.OMElementImpl.buildNext(OMElementImpl.java:709)
> 	at org.apache.axiom.om.impl.llom.OMNodeImpl.getNextOMSibling(OMNodeImpl.java:121)
> 	at org.apache.axiom.om.impl.traverse.OMChildrenIterator.getNextNode(OMChildrenIterator.java:36)
> 	at org.apache.axiom.om.impl.traverse.OMAbstractIterator.hasNext(OMAbstractIterator.java:69)
> 	at org.apache.axiom.om.impl.util.OMSerializerUtil.serializeChildren(OMSerializerUtil.java:555)
> 	at org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:846)
> 	at org.apache.axiom.om.impl.llom.OMSerializableImpl.serialize(OMSerializableImpl.java:120)
> 	at org.apache.axiom.om.impl.llom.OMSerializableImpl.serialize(OMSerializableImpl.java:108)
> 	at org.apache.axiom.om.impl.llom.OMSerializableImpl.serialize(OMSerializableImpl.java:127)
> This looks like a bug.
> Cheers,
> Paul.

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