public static IEnumerable<XmlNode> DotNetXPath(XmlDocument xml, string xpathContextSelector, string xPathExpression, IDictionary<string, string> namespaces, XPathExpressionType changeContextExpression) {
Contract.Requires<ArgumentNullException>(xml != null);
Contract.Requires<ArgumentNullException>(!string.IsNullOrEmpty(xpathContextSelector));
Contract.Requires<ArgumentNullException>(!string.IsNullOrEmpty(xPathExpression));
XmlNode context = xml.SelectSingleNode(xpathContextSelector);
if (changeContextExpression != null) {
context = context.SelectSingleNode(changeContextExpression.ToString());
}
XmlDocument doc = new XmlDocument();
doc.LoadXml(context.OuterXml);
XPathNavigator navigator = context.CreateNavigator();
navigator = doc.DocumentElement.CreateNavigator();
List<XmlNode> result = new List<XmlNode>();
XPathNodeIterator iterator;
try {
if (namespaces == null) {
iterator = navigator.Select(xPathExpression);
}
else {
XmlNamespaceManager manager = new XmlNamespaceManager(xml.NameTable);
foreach (var elem in namespaces) {
manager.AddNamespace(elem.Key, elem.Value);
}
iterator = navigator.Select(xPathExpression, manager);
}
}
catch (XPathException ex) {
throw Diagnostic.DiagnosticTools.ExceptionUtil.ThrowHelperError(new XacmlInvalidDataTypeException("Invalid XPath query", ex));
}
if (iterator.Count > 0) {
while (iterator.MoveNext()) {
result.Add(iterator.Current.UnderlyingObject as XmlNode);
}
}
return result;
}
internal static void MntpAddStartNodeXPathExpressionType(this HttpCookie c, int id, XPathExpressionType xPathExpressionType)
{
c[string.Concat(CookieVals.Snxet, "_", id)] = ((int)xPathExpressionType).ToString();
}
internal static void MntpAddStartNodeXPathExpressionType(this HttpCookie c, int id, XPathExpressionType xPathExpressionType)
{
c[string.Concat(CookieVals.Snxet, "_", id)] = ((int)xPathExpressionType).ToString();
}
public static IEnumerable <XmlNode> DotNetXPath(XmlDocument xml, string xpathContextSelector, string xPathExpression, IDictionary <string, string> namespaces, XPathExpressionType changeContextExpression)
{
if (xml == null)
{
throw new ArgumentNullException(nameof(xml));
}
if (xpathContextSelector == null)
{
throw new ArgumentNullException(nameof(xpathContextSelector));
}
if (xPathExpression == null)
{
throw new ArgumentNullException(nameof(xPathExpression));
}
if (xpathContextSelector.Length == 0)
{
throw new ArgumentException("Value cannot be empty.", nameof(xpathContextSelector));
}
if (xPathExpression.Length == 0)
{
throw new ArgumentException("Value cannot be empty.", nameof(xPathExpression));
}
XmlNode context = xml.SelectSingleNode(xpathContextSelector);
if (changeContextExpression != null)
{
context = context.SelectSingleNode(changeContextExpression.ToString());
}
XmlDocument doc = new XmlDocument();
doc.LoadXml(context.OuterXml);
XPathNavigator navigator = context.CreateNavigator();
navigator = doc.DocumentElement.CreateNavigator();
List <XmlNode> result = new List <XmlNode>();
XPathNodeIterator iterator;
try {
if (namespaces == null)
{
iterator = navigator.Select(xPathExpression);
}
else
{
XmlNamespaceManager manager = new XmlNamespaceManager(xml.NameTable);
foreach (var elem in namespaces)
{
manager.AddNamespace(elem.Key, elem.Value);
}
iterator = navigator.Select(xPathExpression, manager);
}
}
catch (XPathException ex) {
throw new XacmlInvalidDataTypeException("Invalid XPath query", ex);
}
if (iterator.Count > 0)
{
while (iterator.MoveNext())
{
result.Add(iterator.Current.UnderlyingObject as XmlNode);
}
}
return(result);
}
