Bugs item #965893, was opened at 2004-06-03 16:30
Message generated for change (Comment added) made by tdiesler
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Thomas Diesler (tdiesler)
Assigned to: Maarten Coene (maartenc)
Summary: element defines multiple namespaces for same URI
Initial Comment:
I tried to use XPath expressions, but dom4j returns
prefix "" for uri "http://www.w3.org/2001/XMLSchema";,
which seems correct but it hides prefix "xs" which
would need to be used in the XPath expression.
Perhaps element.getNamespaceURI(String) should
return a List.
Therefore, the XPath is not valid. I'm not sure
whether it is legal to define multiple prefixes
for the same URI, or overlaying the default
namespace with a more defined one as it is done in this
example.
<schema
targetNamespace="http://marshalltestservice.org/types2
"
xmlns:foo="http://marshalltestservice.org/types2";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-
instance"
xmlns:xs="http://www.w3.org/2001/XMLSchema";
xmlns="http://www.w3.org/2001/XMLSchema";
elementFormDefault="qualified">
<xs:include schemaLocation
= "IncludedDefs.xsd"/>
...
</schema>
----------------------------------------------------------------------
>Comment By: Thomas Diesler (tdiesler)
Date: 2004-06-10 20:21
Message:
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Given that I don't know the xml document in advance, but
want to get a list of all <include> elements that belong to the
namespace "http://www.w3.org/2001/XMLSchema";.
I first get the prefix
for "http://www.w3.org/2001/XMLSchema"; from the root
element. Then I build up my XPath expression with that prefix.
String xpath = "//" + prefix + ":include";
This does not work, when the prefix I get form the root
element is empty.
Note, that the xml I posted also uses
http://www.w3.org/2001/XMLSchema as default prefix.
Theoretiacally I schould get a list of prefixes for a given
namespace, because multiple aliases to the same namespace
are allowed, or are they not?
cheers
-thomas
----------------------------------------------------------------------
Comment By: Maarten Coene (maartenc)
Date: 2004-06-10 20:10
Message:
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Thomas,
Could you give me an example that fails? I've tried to test
your problem, but all my XPath expressions were evaluated
correctly.
Maarten
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