Examples of net.sf.saxon.query.StaticQueryContext

net.sf.saxon.query.StaticQueryContext
StaticQueryContext contains information used to build a StaticContext for use when processing XQuery expressions.
Despite its name, StaticQueryContext no longer implements the StaticContext interface, which means it cannot be used directly by Saxon when parsing a query. Instead it is first copied to create a QueryModule object, which does implement the StaticContext interface.
The application constructs a StaticQueryContext and initializes it with information about the context, for example, default namespaces, base URI, and so on. When a query is compiled using this StaticQueryContext, the query parser makes a copy of the StaticQueryContext and uses this internally, modifying it with information obtained from the query prolog, as well as information such as namespace and variable declarations that can occur at any point in the query. The query parser does not modify the original StaticQueryContext supplied by the calling application, which may therefore be used for compiling multiple queries, serially or even in multiple threads.

This class forms part of Saxon's published XQuery API. Methods that are considered stable are labelled with the JavaDoc "since" tag. The value 8.4 indicates a method introduced at or before Saxon 8.4; other values indicate the version at which the method was introduced.

In the longer term, this entire API may at some stage be superseded by a proposed standard Java API for XQuery.
@since 8.4

     * the type of each item, and serializing the resulting document.
     */


    public static void exampleToWrappedSequence() throws XPathException {
        final Configuration config = new Configuration();
        final StaticQueryContext sqc = new StaticQueryContext(config);
        final XQueryExpression exp = sqc.compileQuery(
                "<doc><chap><a>3</a></chap></doc>//a, <b>4</b>, attribute c {5}, 19");
        Properties props = new Properties();
        props.setProperty(OutputKeys.OMIT_XML_DECLARATION, "no");
        props.setProperty(OutputKeys.INDENT, "yes");

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     * node) is supplied as the content of another file.
     */


    public static void exampleToHTMLFile() throws XPathException, IOException {
        final Configuration config = new Configuration();
        final StaticQueryContext sqc = new StaticQueryContext(config);
        final XQueryExpression exp = sqc.compileQuery(new FileReader("query/books-to-html.xq"));
        final DynamicQueryContext dynamicContext = new DynamicQueryContext(config);
        dynamicContext.setContextNode(sqc.buildDocument(new StreamSource("data/books.xml")));
        final Properties props = new Properties();
        props.setProperty(OutputKeys.METHOD, "html");
        props.setProperty(OutputKeys.DOCTYPE_PUBLIC, "-//W3C//DTD HTML 4.01 Transitional//EN");
        exp.run(dynamicContext, new StreamResult(new File("booklist.html")), props);
    }

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     * their mapping to XPath data types, see {@link XPathEvaluator#evaluate}
     */


    public static void exampleWithParam() throws XPathException {
        final Configuration config = new Configuration();
        final StaticQueryContext sqc = new StaticQueryContext(config);
        final XQueryExpression exp = sqc.compileQuery("declare variable $in as xs:integer external;" +
                "$in * $in");


        final DynamicQueryContext dynamicContext = new DynamicQueryContext(config);
        dynamicContext.setParameter("in", new Long(17));
        final Long result = (Long)exp.evaluateSingle(dynamicContext);

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    public static void examplePipeline() throws XPathException {
        final Configuration config = new Configuration();


        // Compile the first query
        final StaticQueryContext sqc1 = new StaticQueryContext(config);
        final XQueryExpression exp1 = sqc1.compileQuery(
                "declare variable $in as xs:integer external;" +
                "document{ <a>{$in * $in}</a> }"
        );


        // Compile the second query (each query should have its own static context)
        final StaticQueryContext sqc2 = new StaticQueryContext(config);
        final XQueryExpression exp2 = sqc2.compileQuery(
                "/a + 5"
        );


        // Run the first query
        final DynamicQueryContext dynamicContext = new DynamicQueryContext(config);

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     * Query. This is a very efficient way of invoking a query, but it does minimal
     * checking of the supplied arguments
     */


    public static void exampleDirectFunction() throws XPathException {
        final StaticQueryContext sqc = new StaticQueryContext(new Configuration());
        final XQueryExpression exp1 = sqc.compileQuery("declare namespace f='f.ns';" +
                "declare function f:t1($v1 as xs:integer, $v2 as xdt:untypedAtomic*) { " +
                "   $v1 div $v2" +
                "};" +
                "10");


        final UserFunction fn1 = sqc.getUserDefinedFunction("f.ns", "t1", 2);
        final Controller controller = exp1.getController();
        final Value[] arglist = new Value[2];
        arglist[0] = new IntegerValue(10);
        for (int i=3; i<10; i++) {
            arglist[1] = new IntegerValue(i);

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        try {
            XSLStylesheet top = getPrincipalStylesheet();
            getExecutable().setFunctionLibrary(new ExecutableFunctionLibrary(getConfiguration()));
                        // this is not actually used, but is needed to keep the XQuery processor happy
            StaticQueryContext importedModule = loadModule(moduleURI, href);


            // Do the importing


            short ns = importedModule.getModuleNamespaceCode();
            NamePool pool = getTargetNamePool();
            Iterator it = importedModule.getFunctionDefinitions();
            while (it.hasNext()) {
                XQueryFunction def = (XQueryFunction)it.next();
                // don't import functions transitively
                if (pool.getURICode(def.getFunctionFingerprint()) == ns) {
                    top.declareXQueryFunction(def);

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     * @param boundary The offset of the end of the prolog
     */
    public XBeansXQuery(String queryExpr, String contextVar, Integer boundary)
    {
        this.config = new Configuration();
        this._stcContext = new StaticQueryContext(config);
        this._query = queryExpr;
        this._contextVar = contextVar;
        this.boundary = boundary.intValue();
        //Saxon requires external variables at the end of the prolog...
        String queryExp =

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        props.setProperty(OutputKeys.INDENT, "yes");


        XQueryExpression exp = implementation.getCompiledExpressionsCache().get(xqExpression);
        if (exp == null) {
            config = new Configuration();
            StaticQueryContext sqc = new StaticQueryContext(config);
            exp = sqc.compileQuery(xqExpression);
            implementation.getCompiledExpressionsCache().put(xqExpression, exp);
        } else {
            config = exp.getStaticContext().getConfiguration();
        }

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        xqueryImplementation.setXqExpression(xqExpression);


        xqExpression += "\r\n<dummy></dummy>";


        Configuration config = new Configuration();
        StaticQueryContext sqc = new StaticQueryContext(config);
        XQueryExpression exp = null;
        try {
            exp = sqc.compileQuery(xqExpression);
        } catch (XPathException e) {
            throw new ContributionResolveException(e);
        }


        if (exp == null) {

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            }
            configuration = new Configuration();
            configuration.setHostLanguage(Configuration.XQUERY);
            configuration.setStripsWhiteSpace(isStripsAllWhiteSpace() ? Whitespace.ALL : Whitespace.IGNORABLE);


            staticQueryContext = new StaticQueryContext(getConfiguration());
            Set<Map.Entry<String, String>> entries = namespacePrefixes.entrySet();
            for (Map.Entry<String, String> entry : entries) {
                String prefix = entry.getKey();
                String uri = entry.getValue();
                staticQueryContext.declareNamespace(prefix, uri);

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