Examples of net.sf.saxon.query.XQueryExpression

net.sf.saxon.query.XQueryExpression
XQueryExpression represents a compiled query. This object is immutable and thread-safe, the same compiled query may be executed many times in series or in parallel. The object can be created only by using the compileQuery method of the QueryProcessor class.

Various methods are provided for evaluating the query, with different options for delivery of the results.

     */


    public static void exampleToSingleton() throws XPathException {
        final Configuration config = new Configuration();
        final StaticQueryContext sqc = config.newStaticQueryContext();
        final XQueryExpression exp = sqc.compileQuery("avg(for $i in 1 to 10 return $i*$i)");


        final DynamicQueryContext dynamicContext = new DynamicQueryContext(config);
        final BigDecimal result = (BigDecimal)exp.evaluateSingle(dynamicContext);
        System.out.println(result);


    }

View Full Code Here

     */


    public static void exampleToDOM() throws TransformerException {
        final Configuration config = new Configuration();
        final StaticQueryContext sqc = config.newStaticQueryContext();
        final XQueryExpression exp = sqc.compileQuery("<a xmlns='http://a/uri' xmlns:a='another.uri'>text</a>");


        final DynamicQueryContext dynamicContext = new DynamicQueryContext(config);
        DOMResult result = new DOMResult();
        exp.run(dynamicContext, result, new Properties());


        // now serialize the DOM


        Transformer identity = TransformerFactory.newInstance().newTransformer();
        identity.transform(new DOMSource(result.getNode()), new StreamResult(System.out));

View Full Code Here

     */


    public static void exampleToSequence() throws XPathException {
        final Configuration config = new Configuration();
        final StaticQueryContext sqc = config.newStaticQueryContext();
        final XQueryExpression exp = sqc.compileQuery("for $i in 1 to 10 return ($i * $i)");


        final DynamicQueryContext dynamicContext = new DynamicQueryContext(config);
        final SequenceIterator iter = exp.iterator(dynamicContext);
        while (true) {
            Item item = iter.next();
            if (item == null) {
                break;
            }

View Full Code Here

     */


    public static void exampleToSerializedSequence() throws XPathException {
        final Configuration config = new Configuration();
        final StaticQueryContext sqc = config.newStaticQueryContext();
        final XQueryExpression exp = sqc.compileQuery("<doc><chap><a>3</a></chap></doc>//a, <b>4</b>, 19");
        Properties props = new Properties();
        props.setProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");


        final DynamicQueryContext dynamicContext = new DynamicQueryContext(config);
        final SequenceIterator iter = exp.iterator(dynamicContext);
        QueryResult.serializeSequence(iter, config, System.out, props);
    }

View Full Code Here

     */


    public static void exampleToWrappedSequence() throws XPathException {
        final Configuration config = new Configuration();
        final StaticQueryContext sqc = config.newStaticQueryContext();
        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");


        final DynamicQueryContext dynamicContext = new DynamicQueryContext(config);
        final SequenceIterator iter = exp.iterator(dynamicContext);
        final DocumentInfo doc = QueryResult.wrap(iter, config);
        QueryResult.serialize(doc, new StreamResult(System.out), props);
    }

View Full Code Here

     */


    public static void exampleToHTMLFile() throws XPathException, IOException {
        final Configuration config = new Configuration();
        final StaticQueryContext sqc = config.newStaticQueryContext();
        final XQueryExpression exp = sqc.compileQuery(new FileReader("query/books-to-html.xq"));
        final DynamicQueryContext dynamicContext = new DynamicQueryContext(config);
        dynamicContext.setContextItem(config.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);
    }

View Full Code Here

     */


    public static void exampleWithParam() throws XPathException {
        final Configuration config = new Configuration();
        final StaticQueryContext sqc = config.newStaticQueryContext();
        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);
        System.out.println("17 * 17 = " + result);


    }

View Full Code Here

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


        // Compile the first query
        final StaticQueryContext sqc1 = config.newStaticQueryContext();
        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 = config.newStaticQueryContext();
        final XQueryExpression exp2 = sqc2.compileQuery("/a + 5");


        // Run the first query
        final DynamicQueryContext dynamicContext = new DynamicQueryContext(config);
        dynamicContext.setParameter("in", new Long(3));
        final NodeInfo doc = (NodeInfo)exp1.evaluateSingle(dynamicContext);


        // Run the second query
        dynamicContext.clearParameters();
        dynamicContext.setContextItem(doc);
        final Object result = exp2.evaluateSingle(dynamicContext);
        System.out.println("3*3 + 5 = " + result);
        // The result is actually a java.lang.Double
    }

View Full Code Here

     */


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


        final UserFunction fn1 = exp1.getStaticContext().getUserDefinedFunction("f.ns", "t1", 2);
        if (fn1 == null) {
            throw new IllegalStateException("Function f:t1() not found");
        }
        final Controller controller = exp1.newController();
        final Value[] arglist = new Value[2];
        arglist[0] = new Int64Value(10);
        for (int i = 3; i < 10; i++) {
            arglist[1] = new Int64Value(i);
            final ValueRepresentation result = fn1.call(arglist, controller);

View Full Code Here

     */


    public static void exampleToStreamResult() throws XPathException {
        final Configuration config = new Configuration();
        final StaticQueryContext sqc = new StaticQueryContext(config);
        final XQueryExpression exp = sqc.compileQuery("<a b='c'>{5+2}</a>");


        final DynamicQueryContext dynamicContext = new DynamicQueryContext(config);
        final Properties props = new Properties();
        props.setProperty(OutputKeys.METHOD, "xml");
        props.setProperty(OutputKeys.INDENT, "yes");
        exp.run(dynamicContext, new StreamResult(System.out), props);
    }

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of net.sf.saxon.query.XQueryExpression

au.edu.qut.yawl.elements.YTask

au.edu.qut.yawl.miscellaneousPrograms.XPathSaxonUser

benchmark.xmark.XMarkTest

com.xmlcalabash.model.Parser

net.sf.saxon.Configuration

net.sf.saxon.Controller

net.sf.saxon.evpull.ComplexContentProcessor

net.sf.saxon.evpull.EventIterator

net.sf.saxon.expr.PathMap

net.sf.saxon.instruct.Bindery

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.