Paul Millar created AXIOM-441:
---------------------------------
Summary: Fails to parse XML with empty default namespace attribute
value
Key: AXIOM-441
URL: https://issues.apache.org/jira/browse/AXIOM-441
Project: Axiom
Issue Type: Bug
Components: LLOM
Affects Versions: 1.2.13
Reporter: Paul Millar
Priority: Critical
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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