[jxpath] How to evaulate xpath expression using JXpath library

[Shamik Bandopadhyay <sh...@gmail.com>]

Hi,
     I'm using apache JXPath library to parse an XML. I'm trying to find an
API in JXPath which does similar function as XPath evaluate, i.e. check if
the xpath expression exists ? Its similar in the lines of

 <xsl:when test="

when using xslt. Using XPath I can similarly do,

XPathFactory xpathFactory = XPathFactory.newInstance();
XPath xpath = xpathFactory.newXPath();
InputSource source = new InputSource(new StringReader(xml));
status = xpath.evaluate("/resp/status/solution", source);

If solution is not present, then it'll return status as null. Now,while
using JXPath, I'm unable to figure an API in similar lines. Here's my sample
code

DocumentBuilderFactory dbfactory = DocumentBuilderFactory.newInstance();
DocumentBuilder bld = dbfactory.newDocumentBuilder();
Document metaDoc = bld.parse(in);
JXPathContext metaCtx = JXPathContext.newContext(metaDoc);
Node node = (Node)metaCtx.selectSingleNode("/resp/status/solution");

This throws a "JXPathNotFoundException: No value for xpath" is solution is
not presenet. For implementation specific logic, I need to put and if-else
block if the expression doesn't return data / doesn't exist.

Any pointer on this will be highly appreciated.

-Thanks