/**
* Show a query producing a single atomic value as its result and returning the value
* to the Java application
*/
public static void ExampleToSingleton()
{
Processor processor = new Processor();
XQueryCompiler compiler = processor.NewXQueryCompiler();
XQueryExecutable exp = compiler.Compile("avg(for $i in 1 to 10 return $i * $i)");
XQueryEvaluator eval = exp.Load();
XdmAtomicValue result = (XdmAtomicValue)eval.EvaluateSingle();
Console.WriteLine("Result type: " + result.Value.GetType());
Console.WriteLine("Result value: " + (decimal)result.Value);
}
/**
* Show a query that takes a parameter (external variable) as input.
* The query produces a single atomic value as its result and returns the value
* to the Java application. For the types of value that may be returned, and
* their mapping to XPath data types, see {@link XPathEvaluator#Evaluate}
*/
public static void ExampleWithParam()
{
Processor processor = new Processor();
XQueryCompiler compiler = processor.NewXQueryCompiler();
compiler.DeclareNamespace("p", "http://saxon.sf.net/ns/p");
XQueryExecutable exp = compiler.Compile(
"declare variable $p:in as xs:integer external; $p:in * $p:in");
XQueryEvaluator eval = exp.Load();
eval.SetExternalVariable(new QName("http://saxon.sf.net/ns/p", "p:in"), new XdmAtomicValue(12));
XdmAtomicValue result = (XdmAtomicValue)eval.EvaluateSingle();
Console.WriteLine("Result type: " + result.Value.GetType());
Console.WriteLine("Result value: " + (long)result.Value);
}
/**
* Show a query consisting of two modules, using a QueryResolver to resolve
* the "import module" declaration
*/
public static void ExampleMultiModule()
{
String mod1 = "import module namespace m2 = 'http://www.example.com/module2';" +
"m2:square(3)";
String mod2 = "module namespace m2 = 'http://www.example.com/module2';" +
"declare function m2:square($p) { $p * $p };";
Processor processor = new Processor();
XQueryCompiler compiler = processor.NewXQueryCompiler();
InlineModuleResolver resolver = new InlineModuleResolver();
resolver.AddModule(new Uri("http://www.example.com/module2"), mod2);
compiler.QueryResolver = resolver;
XQueryExecutable exp = compiler.Compile(mod1);
XQueryEvaluator eval = exp.Load();
XdmAtomicValue result = (XdmAtomicValue)eval.EvaluateSingle();
Console.WriteLine("Result type: " + result.Value.GetType());
Console.WriteLine("Result value: " + (long)result.Value);
}
public int GetMetaID(String meta)
{
Processor processor = new Processor();
XQueryCompiler compiler = processor.NewXQueryCompiler();
//compiler.DeclareNamespace("fn", "http://www.w3.org/2005/xpath-functions");
compiler.BaseUri = BaseUri;
XQueryExecutable exp = compiler.Compile(XQueries.GetMetaID);
XQueryEvaluator eval = exp.Load();
eval.SetExternalVariable(new QName("meta"), new XdmAtomicValue(meta));
//XdmAtomicValue result = (XdmAtomicValue)eval.EvaluateSingle();
XdmItem value = eval.EvaluateSingle();
IEnumerator e = value.GetEnumerator();
while (e.MoveNext())
{
//XdmItem item = (XdmItem)e.Current;
//Console.WriteLine(item.ToString());
return(Convert.ToInt32(e.Current.ToString()));
}
return(-1);
}
/**
* Method main. First argument is the Saxon samples directory.
*/
public static void Main(String[] argv)
{
String samplesDir;
if (argv.Length > 0)
{
samplesDir = argv[0];
}
else
{
String home = Environment.GetEnvironmentVariable("SAXON_HOME");
if (home == null)
{
Console.WriteLine("No input directory supplied, and SAXON_HOME is not set");
return;
}
else
{
if (home.EndsWith("/") || home.EndsWith("\\"))
{
samplesDir = home + "samples/";
}
else
{
samplesDir = home + "/samples/";
}
}
}
UriBuilder ub = new UriBuilder();
ub.Scheme = "file";
ub.Host = "";
ub.Path = samplesDir;
Uri baseUri = ub.Uri;
Console.WriteLine("Base URI: " + baseUri.ToString());
// Create a schema-aware Processor
Processor saxon = new Processor(true);
// Load a schema
SchemaManager manager = saxon.SchemaManager;
manager.ErrorList = new ArrayList();
Uri schemaUri = new Uri(baseUri, "data/books.xsd");
try {
manager.Compile(schemaUri);
} catch (Exception e) {
Console.WriteLine("Schema compilation failed with " + manager.ErrorList.Count + " errors");
foreach (StaticError error in manager.ErrorList)
{
Console.WriteLine("At line " + error.LineNumber + ": " + error.Message);
}
return;
}
// Use this to validate an instance document
SchemaValidator validator = manager.NewSchemaValidator();
Uri instanceUri = new Uri(baseUri, "data/books.xml");
validator.SetSource(instanceUri);
validator.ErrorList = new ArrayList();
XdmDestination psvi = new XdmDestination();
validator.SetDestination(psvi);
try {
validator.Run();
} catch (Exception e) {
Console.WriteLine("Instance validation failed with " + validator.ErrorList.Count + " errors");
foreach (StaticError error in validator.ErrorList)
{
Console.WriteLine("At line " + error.LineNumber + ": " + error.Message);
}
}
// Run a query on the result to check that it has type annotations
XQueryCompiler xq = saxon.NewXQueryCompiler();
XQueryEvaluator xv = xq.Compile("data((//PRICE)[1]) instance of xs:decimal").Load();
xv.ContextItem = psvi.XdmNode;
Console.WriteLine("Price is decimal? " + xv.EvaluateSingle().ToString());
}