public void Reading()
{
Stream stm = Globals.GetResource(Globals.PubsNsResource);
XmlTextReader tr = new XmlTextReader(stm);
XPathDocument doc = new XPathDocument(tr);
XPathNavigator nav = doc.CreateNavigator();
// Dumps the entire document to output.
XmlTextWriter tw = new XmlTextWriter(Console.Out);
tw.WriteNode(new XPathNavigatorReader(nav), true);
// Perform a query, then dump the first node (OuterXml) from the result.
nav = doc.CreateNavigator();
XmlNamespaceManager mgr = new XmlNamespaceManager(nav.NameTable);
mgr.AddNamespace("mvp", "mvp-xml");
XPathNodeIterator it = XPathCache.Select("//mvp:titles[mvp:title_id='BU2075']", nav, mgr);
if (it.MoveNext())
{
XmlReader title = new XPathNavigatorReader(it.Current);
// As it's a regular reader, we must first move it to content as usual.
title.MoveToContent();
Console.WriteLine(title.ReadOuterXml());
}
// Perform arbitrary movements, then serialize inner content.
nav = doc.CreateNavigator();
nav.MoveToFirstChild();
nav.MoveToFirstChild();
Console.WriteLine(new XPathNavigatorReader(nav).ReadInnerXml());
}
/// <summary>
/// This code is just to show how it's used.
/// If run it will throw exceptions.
/// </summary>
public void Test()
{
XPathNavigator document = new XPathDocument(String.Empty).CreateNavigator();
XPathNodeIterator it = XPathCache.Select("/customer/order/item", document);
it = XPathCache.Select("/customer/order[id=$id]/item", document,
new XPathVariable("id", "23"));
string[] ids = null;
foreach (string id in ids)
{
it = XPathCache.Select("/customer/order[id=$id]/item", document,
new XPathVariable("id", id));
}
XmlNamespaceManager mgr = new XmlNamespaceManager(document.NameTable);
mgr.AddNamespace("po", "example-po");
it = XPathCache.Select("/po:customer[id=$id]", document, mgr,
new XPathVariable("id", "0736"));
XmlDocument doc = new XmlDocument();
XmlNodeList list = XPathCache.SelectNodes("/customer", doc);
}
public void DynamicVariable()
{
string expr = "//mvp:titles[mvp:price > 10]";
string dyn = "//mvp:titles[mvp:price > $price]";
int price = 10;
XPathNavigator docnav = Document.CreateNavigator();
XPathExpression xpath = docnav.Compile(expr);
XmlNamespaceManager mgr = new XmlNamespaceManager(docnav.NameTable);
mgr.AddNamespace(Globals.MvpPrefix, Globals.MvpNamespace);
xpath.SetContext(mgr);
int count1 = Document.CreateNavigator().Select(xpath).Count;
// Test with compiled expression.
int count2 = XPathCache.Select(expr, Document.CreateNavigator(), mgr).Count;
Assert.AreEqual(count1, count2);
// Test with dynamic expression.
count2 = XPathCache.Select(dyn, Document.CreateNavigator(),
mgr, new XPathVariable("price", price)).Count;
Assert.AreEqual(count1, count2);
}
/// <summary>
/// Evaluate an xpath expression against a list of xpath variables.
/// </summary>
/// <param name="xpath">XPath expression to evaluate</param>
/// <param name="xpathVars">XPathVariable array to evaluate against</param>
/// <returns>Object containing results of evaluation</returns>
static public object Evaluate(string xpath, XPathVariable[] xpathVars)
{
XmlDocument emptyDoc = new XmlDocument();
emptyDoc.LoadXml("<root/>");
return(XPathCache.Evaluate(xpath, emptyDoc.CreateNavigator(), xpathVars));
}
/// <summary>
/// Evaluates <see cref="XPointer"/> pointer and returns
/// iterator over pointed nodes.
/// </summary>
/// <remarks>Note, that returned XPathNodeIterator is already moved once.</remarks>
/// <param name="nav">XPathNavigator to evaluate the
/// <see cref="XPointer"/> on.</param>
/// <returns><see cref="XPathNodeIterator"/> over pointed nodes</returns>
public override XPathNodeIterator Evaluate(XPathNavigator nav)
{
XPathNodeIterator result = XPathCache.Select("id('" + ncName + "')", nav, (XmlNamespaceManager)null);
if (result != null && result.MoveNext())
{
return result;
}
throw new NoSubresourcesIdentifiedException(string.Format(CultureInfo.CurrentCulture, Properties.Resources.NoSubresourcesIdentifiedException, ncName));
}
public override XPathNodeIterator Evaluate(XPathNavigator doc, XmlNamespaceManager nm)
{
try
{
return(XPathCache.Select(_xpath, doc, nm));
}
catch
{
return(null);
}
}
public static IEnumerable <XmlElement> ElementsByXPath(this XmlNode node, string xPath)
{
try
{
return(XPathCache.SelectNodes(xPath, node).OfType <XmlElement>());
}
catch (NullReferenceException)
{
return(node.SelectNodes(xPath).OfType <XmlElement>());
}
}
/// <summary>
/// Evaluates <see cref="XPointer"/> pointer and returns
/// iterator over pointed nodes.
/// </summary>
/// <remarks>Note, that returned XPathNodeIterator is already moved once.</remarks>
/// <param name="nav">XPathNavigator to evaluate the
/// <see cref="XPointer"/> on.</param>
/// <returns><see cref="XPathNodeIterator"/> over pointed nodes</returns>
public override XPathNodeIterator Evaluate(XPathNavigator nav)
{
XPathNodeIterator result = XPathCache.Select("id('" + _NCName + "')", nav, (XmlNamespaceManager)null);
if (result != null && result.MoveNext())
{
return(result);
}
else
{
throw new NoSubresourcesIdentifiedException(SR.GetString("NoSubresourcesIdentifiedException", _NCName));
}
}
public void PrefixMapping()
{
string expr = "//mvp:titles[mvp:price > 10]";
XPathNavigator docnav = Document.CreateNavigator();
XPathExpression xpath = docnav.Compile(expr);
XmlNamespaceManager mgr = new XmlNamespaceManager(docnav.NameTable);
mgr.AddNamespace(Globals.MvpPrefix, Globals.MvpNamespace);
xpath.SetContext(mgr);
int count1 = Document.CreateNavigator().Select(xpath).Count;
int count2 = XPathCache.Select(expr, Document.CreateNavigator(),
new XmlPrefix(Globals.MvpPrefix, Globals.MvpNamespace, Document.CreateNavigator().NameTable)).Count;
Assert.AreEqual(count1, count2);
}
public void Sorted1()
{
string expr = "//mvp:titles";
XPathNavigator docnav = Document.CreateNavigator();
XPathExpression xpath = docnav.Compile(expr);
XmlNamespaceManager mgr = new XmlNamespaceManager(docnav.NameTable);
mgr.AddNamespace(Globals.MvpPrefix, Globals.MvpNamespace);
xpath.SetContext(mgr);
XPathExpression sort = docnav.Compile("mvp:price");
sort.SetContext(mgr);
xpath.AddSort(sort, XmlSortOrder.Ascending, XmlCaseOrder.LowerFirst, String.Empty, XmlDataType.Number);
XPathNodeIterator it = Document.CreateNavigator().Select(xpath);
DebugUtils.XPathNodeIteratorToConsole(it);
it = Document.CreateNavigator().Select(xpath);
it.MoveNext();
it.Current.MoveToFirstChild();
string id1 = it.Current.Value;
XPathNodeIterator cached = XPathCache.SelectSorted(
expr, Document.CreateNavigator(),
"mvp:price", XmlSortOrder.Ascending, XmlCaseOrder.LowerFirst, String.Empty, XmlDataType.Number,
new XmlPrefix(Globals.MvpPrefix, Globals.MvpNamespace, Document.CreateNavigator().NameTable));
DebugUtils.XPathNodeIteratorToConsole(cached);
cached = XPathCache.SelectSorted(
expr, Document.CreateNavigator(),
"mvp:price", XmlSortOrder.Ascending, XmlCaseOrder.LowerFirst, String.Empty, XmlDataType.Number,
new XmlPrefix(Globals.MvpPrefix, Globals.MvpNamespace, Document.CreateNavigator().NameTable));
cached.MoveNext();
cached.Current.MoveToFirstChild();
string id2 = cached.Current.Value;
Assert.AreEqual(id1, id2);
}
/// <summary>
/// Apply an XPath to a nodeset
/// </summary>
/// <param name="xpathSpec">The XPath to apply</param>
/// <param name="doc">The nodeset context</param>
/// <returns>A list of selected nodes</returns>
public virtual NodeList applyTo(System.String xpathSpec, IList nodeSet)
{
//RuntimeSingleton.info("XPathTool::applyTo(String, List)");
return(new NodeList(XPathCache.getXPath(xpathSpec).applyTo(nodeSet), false));
}
/// <summary>
/// Apply an XPath to a JDOM Element
/// </summary>
/// <param name="xpathSpec">The XPath to apply</param>
/// <param name="doc">The Element context</param>
/// <returns>A list of selected nodes</returns>
public virtual NodeList applyTo(System.String xpathSpec, XmlElement elem)
{
//RuntimeSingleton.info("XPathTool::applyTo(String, Element)");
return(new NodeList(XPathCache.getXPath(xpathSpec).applyTo(elem), false));
}
public string CallAction(string action, string input, IProgressCallback progressReporter)
{
XmlNode fault;
XmlDocument outputDoc = null;
var inputDoc = new XmlDocument();
inputDoc.LoadXml(input);
if (_userInfo == null)
{
_userInfo = _inn.applyAML(string.Format("<AML><Item type='User' action='get' select='default_vault' expand='1'><id>{0}</id><Relationships><Item type='ReadPriority' action='get' select='priority, related_id' expand='1' orderBy='priority'/></Relationships></Item></AML>", _inn.getUserID()));
}
if (action == "ApplyItem" || action == "ApplyAML")
{
var fileNodes = XPathCache.SelectNodes("descendant-or-self::Item[@type='File' and (@action='add' or @action='update' or @action='create') and actual_filename]", inputDoc.DocumentElement);
XmlNode locatedNode;
if (fileNodes.Count > 0)
{
Item fileItem = _inn.newItem();
foreach (var fileNode in fileNodes.OfType <XmlElement>())
{
if (string.IsNullOrEmpty(fileNode.Attribute("id")))
{
fileNode.Attr("id", _inn.getNewID());
}
fileNode.Elem("checkedout_path", Path.GetDirectoryName(fileNode.Element("actual_filename", "")));
fileNode.Elem("filename", Path.GetFileName(fileNode.Element("actual_filename", "")));
locatedNode = XPathCache.SelectSingleNode("Relationships/Item[@type='Located']/related_id", fileNode);
if (locatedNode == null)
{
fileItem.dom = inputDoc;
fileItem.node = (XmlElement)fileNode;
fileItem.nodeList = null;
fileItem.attachPhysicalFile(fileNode.Element("actual_filename", ""), _userInfo.getProperty("default_vault"));
}
}
var firstItem = XPathCache.SelectSingleNode("//Item[1]", inputDoc.DocumentElement);
IList <XmlElement> items;
if (firstItem.ParentNode == null)
{
items = new XmlElement[] { (XmlElement)firstItem };
}
else
{
items = firstItem.Parent().Elements("Item").ToList();
}
Item result;
XmlElement resultNode = null;
for (var i = 0; i < items.Count; i++)
{
fileItem.dom = items[i].OwnerDocument;
fileItem.node = items[i];
fileItem.nodeList = null;
result = fileItem.apply();
fault = XPathCache.SelectSingleNode(faultXPath, result.dom.DocumentElement);
if (fault != null)
{
fault.AppendChild(result.dom.CreateElement("original_query")).InnerText = input;
return(result.dom.DocumentElement.OuterXml);
}
else if (result.isError())
{
throw new InvalidOperationException();
}
if (outputDoc == null)
{
outputDoc = result.dom;
resultNode = XPathCache.SelectSingleNode("//Item[1]", outputDoc.DocumentElement).Parent() as XmlElement;
}
else
{
resultNode.AppendChild(outputDoc.ImportNode(result.node, true));
}
if (progressReporter != null)
{
progressReporter.ReportProgress(i + 1, items.Count);
}
}
return(outputDoc.OuterXml);
}
}
outputDoc = new XmlDocument();
outputDoc.Elem("Empty");
_inn.getConnection().CallAction(action, inputDoc, outputDoc);
fault = XPathCache.SelectSingleNode(faultXPath, outputDoc.DocumentElement);
if (fault != null)
{
fault.AppendChild(outputDoc.CreateElement("original_query")).InnerText = input;
}
return(outputDoc.DocumentElement.OuterXml);
}
public static IEnumerable <XmlNode> XPath(this XmlNode node, string xPath, params object[] vars)
{
return(XPathCache.SelectNodes(xPath, node,
vars.Select((v, i) => new XPathVariable("p" + i.ToString(), v)).ToArray())
.OfType <XmlNode>());
}
public static IEnumerable <XmlNode> XPath(this XmlNode node, string xPath)
{
return(XPathCache.SelectNodes(xPath, node).OfType <XmlNode>());
}
public override XPathNodeIterator Evaluate(XPathNavigator doc,
XmlNamespaceManager nm)
{
return(XPathCache.Select(XPath, doc, nm));
}