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Struts & Hibernate
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| | | Jaxen method of matching XPath | Jaxen method of matching XPath 2004-03-23 - By Anna Afonchenko
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I am using JDOM to access and change some XML file.
I noticed that when I apply some XPath, the nodes match by Depth First Search,
not by Breadth First Search (as in saxon, for example).
E.g., when applying XPath //a on the next document:
<b>
<a>1</a>
</b>
<a>2</a>
First the <a>2</a> will be matched, and then <a>1</a>.
This is how I apply it in the code:
//read in the xml file
Document xmlDocument = new SAXBuilder().build(xmlDocument);
org.jaxen.XPath path = new JDOMXPath(sXPath);
currentElement = (Element) path.selectSingleNode(xmlDocument);
XMLOutputter outputter = new XMLOutputter();
return outputter.outputString(currentElement);
Is there any possible way of forcing jaxen to perform BFS match for XPath? So
that for the previous xml file and XPath it will return as a result <a>1</a>.
I apologise if this question was asked before, it is not in the FAQ,
and I could not find something similar in the archives.
Thank you very much for help.
Anna
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<DIV><FONT face=Arial size=2>I am using JDOM to access and change some XML
file.</FONT></DIV>
<DIV><FONT face=Arial size=2>I noticed that when I apply some XPath, the nodes
match by Depth First Search, not by Breadth First Search (as in saxon, for
example).</FONT></DIV>
<DIV><FONT face=Arial size=2>E.g., when applying XPath //a on the next
document:</FONT></DIV>
<DIV><FONT face=Arial size=2><b></FONT></DIV>
<DIV><FONT face=Arial size=2>
<a>1</a></FONT></DIV>
<DIV><FONT face=Arial size=2></b></FONT></DIV>
<DIV><FONT face=Arial size=2><a>2</a></FONT></DIV>
<DIV><FONT face=Arial size=2>First the <a>2</a> will be matched,
and
then <a>1</a>.</FONT></DIV>
<DIV><FONT face=Arial size=2>This is how I apply it in the code:</FONT></DIV>
<DIV><FONT face=Arial size=2>//read in the xml file</FONT></DIV>
<DIV><FONT face=Arial size=2>Document xmlDocument = new
SAXBuilder().build(xmlDocument);</FONT></DIV>
<DIV><FONT face=Arial size=2>org.jaxen.XPath path = new
JDOMXPath(sXPath);<BR>currentElement = (Element)
path.selectSingleNode(xmlDocument);</FONT></DIV>
<DIV><FONT face=Arial size=2>XMLOutputter outputter = new
XMLOutputter();<BR>return outputter.outputString(currentElement);</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Is there any possible way of forcing jaxen to
perform BFS match for XPath? So that for the previous xml file and XPath it
will
return as a result <a>1</a>.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I apologise if this question was asked before, it
is not in the FAQ,</FONT></DIV>
<DIV><FONT face=Arial size=2>and I could not find something similar in the
archives.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Thank you very much for help.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Anna</FONT></DIV></BODY></HTML>
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