Olivier,
As Gareth mentioned in your JIRA post, what's happening is that the
<report> and <account_number> elements are still bound to the
"http://www.mydomain.com/report"; namespace, even though they are not
using a namespace prefix. Your XML is using a declared default namespace
of "http://www.mydomain.com/report";.
Therefore your XPath query will not return anything because it is asking
for <report> and <account_number> elements that are in no namespace
(because you haven't defined a namespace context), but your input XML
only contains elements in the "http://www.mydomain.com/report"; namespace.
If you can't control your input XML, then you need to set your namespace
context so that the XPath query knows you are looking for <report> and
<account_number> in the "http://www.mydomain.com/report"; namespace.
These pages should provide good instructions and hints:
http://xml.apache.org/xalan-j/xpath_apis.html#namespacecontext
http://www.edankert.com/defaultnamespaces.html
Good luck,
Nathan
Olivier Roger wrote:
Hi,
I am having difficulties to use XPath query on a XML dataset having its root
element with an *xmlns attribute with no prefix*.
In that specific case, the XPath query does not return the value. Since I
have no prefix for the namespace I simply can get the value.
It this a known issue or am I simply doing something wrong ?
Here is my XML :
{noformat:title=default-ns.xml}
<?xml version="1.0" encoding="UTF-8"?>
<report xmlns="http://www.mydomain.com/report";>
<account_number>123</account_number>
</report>
{noformat}
Here is my test method:
{code}
@Test
public void xPathDefaultNS() throws XPathExpressionException {
javax.xml.xpath.XPathFactory factory =
javax.xml.xpath.XPathFactory.newInstance();
javax.xml.xpath.XPath xpath = factory.newXPath();
javax.xml.xpath.XPathExpression expression =
xpath.compile("/report/account_number");
String result = expression.evaluate(new
org.xml.sax.InputSource(this.getClass().getResourceAsStream("default-ns.xml")));
Assert.assertTrue("123".equals(result));
}
{code}
From what Gareth responded on the Jira issue
(https://issues.apache.org/jira/browse/XALANJ-2549) there seems to be a
missing step (resolving the namespace). How I that done exactly ?
--
Nathan Nadeau
n...@gleim.com
Software Development
Gleim Publications, Inc.
http://www.gleim.com
