static void Main(string[] args)
{
if ( args.Length < 2)
{
Console.Error.WriteLine("Syntax: demo <path-to-xml-file> <xpath-expression> [<num-iterations(default={0})>]", numIters);
return;
}
var file = args[0];
var xpath = args[1];
if ( args.Length > 2)
{
numIters = int.Parse(args[2]);
}
Console.WriteLine("Loading {0}", file);
var proc = new Processor();
var ms_xp = System.Xml.XPath.XPathExpression.Compile(xpath);
var xpc = proc.NewXPathCompiler();
var xpe = xpc.Compile(xpath);
var sel = xpe.Load();
var doc = XDocument.Load(file);
var ctx = proc.Wrap(doc);
sel.ContextItem = ctx;
var nt = new NameTable();
XmlDocument xd = new XmlDocument(nt);
xd.Load(file);
var ctxXmlDoc = proc.NewDocumentBuilder().Wrap(xd);
Console.WriteLine("Evaluating {0}", xpath);
Time(() => Saxon(sel), "XDoc (Saxon)");
Time(() => Native(ms_xp, doc), "XDoc (Native)");
sel.ContextItem = ctxXmlDoc;
Time(() => Saxon(sel), "XmlDoc (Saxon)");
Time(() => Native(ms_xp, xd), "XmlDoc (Native)");
}
/// <summary>
/// Load the XSLT file
/// </summary>
public void Load(string filename, bool profilingEnabled = false)
{
//register our eval() function
processor = new Processor();
processor.RegisterExtensionFunction(new SaxonEvaluate(processor.NewXPathCompiler()));
//tracing
if (profilingEnabled)
{
var profile = new TimingTraceListener();
processor.Implementation.setTraceListener(profile);
processor.Implementation.setLineNumbering(true);
processor.Implementation.setCompileWithTracing(true);
processor.Implementation.getDefaultXsltCompilerInfo().setCodeInjector(new TimingCodeInjector());
profile.setOutputDestination(new java.io.PrintStream("profile.html"));
}
//capture the error information
var compiler = processor.NewXsltCompiler();
compiler.ErrorList = errorList;
//compile the stylesheet
var relativeFilename = System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, filename);
try
{
var exec = compiler.Compile(XmlTextReader.Create(relativeFilename));
//capture xsl:message output
transform = exec.Load();
transform.MessageListener = new SaxonMessageListener();
}
catch (Exception)
{
foreach (StaticError err in compiler.ErrorList)
{
log.ErrorFormat("{0} ({1}, line {2})", err, err.ModuleUri, err.LineNumber);
}
throw;
}
}
/**
* Run the application
*/
public void go(String filename) {
Processor processor = new Processor();
XPathCompiler xpe = processor.NewXPathCompiler();
// Build the source document.
DocumentBuilder builder = processor.NewDocumentBuilder();
builder.BaseUri = new Uri(filename);
builder.WhitespacePolicy = WhitespacePolicy.StripAll;
XdmNode indoc = builder.Build(
new FileStream(filename, FileMode.Open, FileAccess.Read));
// Compile the XPath expressions used by the application
QName wordName = new QName("", "", "word");
xpe.DeclareVariable(wordName);
XPathSelector findLine =
xpe.Compile("//LINE[contains(., $word)]").Load();
XPathSelector findLocation =
xpe.Compile("concat(ancestor::ACT/TITLE, ' ', ancestor::SCENE/TITLE)").Load();
XPathSelector findSpeaker =
xpe.Compile("string(ancestor::SPEECH/SPEAKER[1])").Load();
// Loop until the user enters "." to end the application
while (true) {
// Prompt for input
Console.WriteLine("\n>>>> Enter a word to search for, or '.' to quit:\n");
// Read the input
String word = Console.ReadLine().Trim();
if (word == ".") {
break;
}
if (word != "") {
// Set the value of the XPath variable
currentWord = word;
// Find the lines containing the requested word
bool found = false;
findLine.ContextItem = indoc;
findLine.SetVariable(wordName, new XdmAtomicValue(word));
foreach (XdmNode line in findLine) {
// Note that we have found at least one line
found = true;
// Find where it appears in the play
findLocation.ContextItem = line;
Console.WriteLine("\n" + findLocation.EvaluateSingle());
// Output the name of the speaker and the content of the line
findSpeaker.ContextItem = line;
Console.WriteLine(findSpeaker.EvaluateSingle() + ": " + line.StringValue);
}
// If no lines were found, say so
if (!found) {
Console.WriteLine("No lines were found containing the word '" + word + '\'');
}
}
}
// Finish when the user enters "."
Console.WriteLine("Finished.");
}
/// <summary>
/// Execute an XPath expression that throws a dynamic error, and catch the error
/// </summary>
public override void run(Uri samplesDir)
{
// Create a Processor instance.
Processor processor = new Processor();
// Create the XPath expression.
XPathCompiler compiler = processor.NewXPathCompiler();
compiler.AllowUndeclaredVariables = true;
XPathExecutable expression = compiler.Compile("1 + unknown()");
XPathSelector selector = expression.Load();
// Evaluate the XPath expression
Console.WriteLine(selector.EvaluateSingle().ToString());
}
/// <summary>
/// Execute an XPath expression that throws a dynamic error
/// </summary>
public override void run(Uri samplesDir)
{
// Create a Processor instance.
Processor processor = new Processor();
// Create the XPath expression.
XPathCompiler compiler = processor.NewXPathCompiler();
compiler.AllowUndeclaredVariables = true;
XPathExecutable expression = compiler.Compile("$a gt $b");
XPathSelector selector = expression.Load();
// Set the values of the variables
selector.SetVariable(new QName("", "a"), new XdmAtomicValue(10));
selector.SetVariable(new QName("", "b"), new XdmAtomicValue("Paris"));
// Evaluate the XPath expression
Console.WriteLine(selector.EvaluateSingle().ToString());
}
/// <summary>
/// Run a transformation: simplest possible script
/// </summary>
public override void run(Uri samplesDir)
{
// Create a Processor instance.
Processor processor = new Processor();
// Create the XPath expression.
XPathCompiler compiler = processor.NewXPathCompiler();
compiler.DeclareVariable(new QName("", "a"));
compiler.DeclareVariable(new QName("", "b"));
XPathSelector selector = compiler.Compile("$a + $b").Load();
// Set the values of the variables
selector.SetVariable(new QName("", "a"), new XdmAtomicValue(2));
selector.SetVariable(new QName("", "b"), new XdmAtomicValue(3));
// Evaluate the XPath expression
Console.WriteLine(selector.EvaluateSingle().ToString());
}
/// <summary>
/// Execute an XPath expression containing undeclared variables
/// </summary>
public override void run(Uri samplesDir)
{
// Create a Processor instance.
Processor processor = new Processor();
// Create the XPath expression.
XPathCompiler compiler = processor.NewXPathCompiler();
compiler.AllowUndeclaredVariables = true;
XPathExecutable expression = compiler.Compile("$a + $b");
XPathSelector selector = expression.Load();
// Set the values of the variables
IEnumerator vars = expression.EnumerateExternalVariables();
while (vars.MoveNext())
{
selector.SetVariable((QName)vars.Current, new XdmAtomicValue(10));
}
// Evaluate the XPath expression
Console.WriteLine(selector.EvaluateSingle().ToString());
}
/// <summary>
/// Run a transformation: simplest possible script
/// </summary>
public override void run(Uri samplesDir)
{
// Create a Processor instance.
Processor processor = new Processor();
// Load the source document
XdmNode input = processor.NewDocumentBuilder().Build(new Uri(samplesDir, "data/books.xml"));
// Create an XPath compiler
XPathCompiler xpath = processor.NewXPathCompiler();
// Enable caching, so each expression is only compiled once
xpath.Caching = true;
// Compile and evaluate some XPath expressions
foreach (XdmItem item in xpath.Evaluate("//ITEM", input))
{
Console.WriteLine("TITLE: " + xpath.EvaluateSingle("string(TITLE)", item));
Console.WriteLine("PRICE: " + xpath.EvaluateSingle("string(PRICE)", item));
}
}
/// <summary>
/// Run an XSLT transformation from an Xdm tree, starting at a node that is not the document node
/// </summary>
/// <param name="fileNames">
/// 1. The source document
/// 2. The stylesheet
/// </param>
public override void run(Uri samplesDir)
{
// Create a Processor instance.
Processor processor = new Processor();
// Load the source document
XdmNode input = processor.NewDocumentBuilder().Build(new Uri(samplesDir, "data/othello.xml"));
// Navigate to the first grandchild
XPathSelector eval = processor.NewXPathCompiler().Compile("/PLAY/FM[1]").Load();
eval.ContextItem = input;
input = (XdmNode)eval.EvaluateSingle();
// Create an XSLT compiler
XsltCompiler compiler = processor.NewXsltCompiler();
// Compile the stylesheet
XsltTransformer transformer = compiler.Compile(new Uri(samplesDir, "styles/summarize.xsl")).Load();
// Run the transformation
transformer.InitialContextNode = input;
XdmDestination result = new XdmDestination();
transformer.Run(result);
// Serialize the result so we can see that it worked
Console.WriteLine(result.XdmNode.OuterXml);
}
/// <summary>
/// Run a transformation driven by an xml-stylesheet processing instruction in the source document
/// </summary>
/// <param name="fileNames">
/// 1. The source document
/// </param>
public override void run(Uri samplesDir)
{
// Create a Processor instance.
Processor processor = new Processor();
XsltExecutable exec;
// Load the source document
XdmNode input = processor.NewDocumentBuilder().Build(new Uri(samplesDir, "data/books.xml"));
//Console.WriteLine("=============== source document ===============");
//Console.WriteLine(input.OuterXml);
//Console.WriteLine("=========== end of source document ============");
// Navigate to the xml-stylesheet processing instruction having the pseudo-attribute type=text/xsl;
// then extract the value of the href pseudo-attribute if present
String path = @"/processing-instruction(xml-stylesheet)[matches(.,'type\s*=\s*[''""]text/xsl[''""]')]" +
@"/replace(., '.*?href\s*=\s*[''""](.*?)[''""].*', '$1')";
XPathSelector eval = processor.NewXPathCompiler().Compile(path).Load();
eval.ContextItem = input;
XdmAtomicValue hrefval = (XdmAtomicValue)eval.EvaluateSingle();
String href = (hrefval == null ? null : hrefval.ToString());
if (href == null || href == "")
{
Console.WriteLine("No suitable xml-stylesheet processing instruction found");
return;
}
else if (href[0] == '#')
{
// The stylesheet is embedded in the source document and identified by a URI of the form "#id"
Console.WriteLine("Locating embedded stylesheet with href = " + href);
String idpath = "id('" + href.Substring(1) + "')";
eval = processor.NewXPathCompiler().Compile(idpath).Load();
eval.ContextItem = input;
XdmNode node = (XdmNode)eval.EvaluateSingle();
if (node == null)
{
Console.WriteLine("No element found with ID " + href.Substring(1));
return;
}
exec = processor.NewXsltCompiler().Compile(node);
}
else
{
// The stylesheet is in an external document
Console.WriteLine("Locating stylesheet at uri = " + new Uri(input.BaseUri, href));
// Fetch and compile the referenced stylesheet
exec = processor.NewXsltCompiler().Compile(new Uri(input.BaseUri, href.ToString()));
}
// Create a transformer
XsltTransformer transformer = exec.Load();
// Run it
transformer.InitialContextNode = input;
XdmDestination results = new XdmDestination();
transformer.Run(results);
Console.WriteLine("1: " + results.XdmNode.OuterXml);
}
public override void run(Uri samplesDir)
{
Processor processor = new Processor(true);
String inputFileName = new Uri(samplesDir, "data/books.xml").ToString();
processor.SchemaManager.Compile(new Uri(samplesDir, "data/books.xsd"));
// add a reader
XmlReader xmlReader = XmlReader.Create(UriConnection.getReadableUriStream(new Uri(samplesDir, "data/books.xml")));
DocumentBuilder builder = processor.NewDocumentBuilder();
builder.SchemaValidationMode = SchemaValidationMode.Strict;
XdmNode doc = builder.Build(xmlReader);
XPathCompiler compiler = processor.NewXPathCompiler();
compiler.ImportSchemaNamespace("");
XPathExecutable exp = compiler.Compile("if (//ITEM[@CAT='MMP']/QUANTITY instance of element(*,xs:integer)*) then 'true' else 'false'");
XPathSelector eval = exp.Load();
eval.ContextItem = doc;
XdmAtomicValue result = (XdmAtomicValue)eval.EvaluateSingle();
Console.WriteLine("Result type: " + result.ToString());
}
