/**
* Given an expression and a context, evaluate the XPath and return the result.
*
* @param xctxt The execution context.
* @param contextNode The node that "." expresses.
* @param namespaceContext The context in which namespaces in the XPath are supposed to be
* expanded.
* @throws TransformerException thrown if the active ProblemListener decides the error condition
* is severe enough to halt processing.
* @throws javax.xml.transform.TransformerException
* @xsl.usage experimental
*/
public XObject execute(XPathContext xctxt, int contextNode, PrefixResolver namespaceContext)
throws javax.xml.transform.TransformerException {
xctxt.pushNamespaceContext(namespaceContext);
xctxt.pushCurrentNodeAndExpression(contextNode, contextNode);
XObject xobj = null;
try {
xobj = m_mainExp.execute(xctxt);
} catch (TransformerException te) {
te.setLocator(this.getLocator());
ErrorListener el = xctxt.getErrorListener();
if (null != el) // defensive, should never happen.
{
el.error(te);
} else throw te;
} catch (Exception e) {
while (e instanceof com.sun.org.apache.xml.internal.utils.WrappedRuntimeException) {
e = ((com.sun.org.apache.xml.internal.utils.WrappedRuntimeException) e).getException();
}
// e.printStackTrace();
String msg = e.getMessage();
if (msg == null || msg.length() == 0) {
msg = XSLMessages.createXPATHMessage(XPATHErrorResources.ER_XPATH_ERROR, null);
}
TransformerException te = new TransformerException(msg, getLocator(), e);
ErrorListener el = xctxt.getErrorListener();
// te.printStackTrace();
if (null != el) // defensive, should never happen.
{
el.fatalError(te);
} else throw te;
} finally {
xctxt.popNamespaceContext();
xctxt.popCurrentNodeAndExpression();
}
return xobj;
}
