public static XPathPathExpr getPathExpr(String nodeset)
{
XPathExpression path;
Boolean validNonPathExpr = false;
try
{
path = XPathParseTool.parseXPath(nodeset);
if (!(path is XPathPathExpr))
{
validNonPathExpr = true;
throw new XPathSyntaxException();
}
}
catch (XPathSyntaxException xse)
{
//make these checked exceptions?
if (validNonPathExpr)
{
throw new SystemException("Expected XPath path, got XPath expression: [" + nodeset + "]");
}
else
{
throw new SystemException("Parse error in XPath path: [" + nodeset + "]");
}
}
return((XPathPathExpr)path);
}
private void attemptConstraintCompile()
{
xPathConstraintMsg = null;
try
{
if (constraintMsg != null)
{
xPathConstraintMsg = XPathParseTool.parseXPath("string(" + constraintMsg + ")");
}
}
catch (Exception e)
{
//Expected in probably most cases.
}
}