[jdom-interest] Xpath support

Laurent Bihanic laurent.bihanic at atosorigin.com
Fri Dec 5 05:09:30 PST 2003

On 05/12/2003 08:45, Edward Barrow wrote:
> What I would like is a way to get a node's absolute xpath (I'd be
> satisfied if it only worked with Elements, but nodes would be better) - 
> eg: XPath xpath = element.getXPath(); 
> or   XPath.getXpath(element).
> Or is there an easy way to do that already, that I just can't find?

You could try the XPathHelper class from the org.jdom.contrib.helpers package 
in the jdom-contrib module from CVS:
     String xpath = XPathHelper.getPathString(element);

The reason this code is not part of the XPath class is that it returns XPath 
expressions that are dependent on the document structure. Add, remove or 
rename a node and the generated XPaths won't work any longer.
Thus, these XPaths are very short lived. For long term XPath, you should use 
XPaths that are based on the semantics of the document.


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