From Dominik Krupp:
here is an even simpler but runnable example.
All three paths have the same Xpath namespace scopes. I still think
there should be zero selected nodes with the "/root" path, but there is one.
My output with JDOM 1.0 and Jaxen 1.1beta10 in classpath:
Element root has namespace URI: http://mynamespace.org/
Size of node set (/root): 1
Size of node set (/my:root): 1
Size of node set (/foreign:root): 0
Program producing that output:
import java.util.List;
import org.jaxen.JaxenException;
import org.jaxen.XPath;
import org.jaxen.jdom.JDOMXPath;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.Namespace;
public class NullNamespaceXpath {
public static void main(String[] args) {
Namespace my = Namespace.getNamespace("my",
"http://mynamespace.org/");
Document doc = new Document();
Element root = new Element("root", my);
doc.setRootElement(root);
try {
XPath nullNamespacePath = new JDOMXPath("/root");
nullNamespacePath.addNamespace("my", "http://mynamespace.org/");
nullNamespacePath.addNamespace("foreign",
"http://foreignnamespace.org/");
XPath myNamespacePath = new JDOMXPath("/my:root");
myNamespacePath.addNamespace("my", "http://mynamespace.org/");
myNamespacePath.addNamespace("foreign",
"http://foreignnamespace.org/");
XPath foreignNamespacePath = new JDOMXPath("/foreign:root");
foreignNamespacePath.addNamespace("my",
"http://mynamespace.org/");
foreignNamespacePath.addNamespace("foreign",
"http://foreignnamespace.org/");
List selectedNodesNullNamespace = nullNamespacePath
.selectNodes(doc);
List selectedNodesMyNamespace =
myNamespacePath.selectNodes(doc);
List selectedNodesForeignNamespace = foreignNamespacePath
.selectNodes(doc);
System.out.println("Element root has namespace URI: "
+ root.getNamespaceURI());
System.out.println("Size of node set (/root): "
+ selectedNodesNullNamespace.size());
System.out.println("Size of node set (/my:root): "
+ selectedNodesMyNamespace.size());
System.out.println("Size of node set (/foreign:root): "
+ selectedNodesForeignNamespace.size());
} catch (JaxenException e) {
e.printStackTrace();
}
}
}
Bug
Resolved
Major
JDOM navigator does selects with null namespace
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else if(el.getNamespace() != null) { return JaxenConstants.EMPTY_ITERATOR; }
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Insert just before the following line
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return new SingleObjectIterator(el);
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