Examples of net.sf.saxon.instruct.UserFunction

net.sf.saxon.instruct.UserFunction
This object represents the compiled form of a user-written function (the source can be either an XSLT stylesheet function or an XQuery function).
It is assumed that type-checking, of both the arguments and the results, has been handled at compile time. That is, the expression supplied as the body of the function must be wrapped in code to check or convert the result to the required type, and calls on the function must be wrapped at compile time to check or convert the supplied arguments.

                "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);
            final Value result = fn1.call(arglist, controller);
            System.out.println(arglist[0] + " div " + arglist[1] + " = " + result);
        }
    }

View Full Code Here

     */


    public Expression bind(int nameCode, String uri, String local, Expression[] staticArgs)
            throws XPathException {
        long key = ((long)staticArgs.length)<<32 | (nameCode & 0xfffff);
        UserFunction fn = (UserFunction)functions.get(new Long(key));
        if (fn == null) {
            return null;
        }
        StandaloneContext env = new StandaloneContext(config); // this is needed only for the name pool
        UserFunctionCall fc = new UserFunctionCall();
        fc.setFunctionNameCode(nameCode);
        fc.setArguments(staticArgs);
        fc.setFunction(fn, env);
        fc.setStaticType(fn.getResultType());
        return fc;
    }

View Full Code Here

        if (fd != null) {
            UserFunctionCall ufc = new UserFunctionCall();
            ufc.setFunctionNameCode(nameCode);
            ufc.setArguments(arguments);
            ufc.setStaticType(fd.getResultType());
            UserFunction fn = fd.getUserFunction();
            if (fn == null) {
                // not yet compiled
                fd.registerReference(ufc);
            } else {
                ufc.setFunction(fn, fd.getStaticContext());

View Full Code Here

     * be objects of class {@link UserFunction}
     */


    public static void gatherCalledFunctions(Expression e, List list) {
        if (e instanceof UserFunctionCall) {
            UserFunction function = ((UserFunctionCall)e).getFunction();
            if (!list.contains(function)) {
                list.add(function);
            }
        } else {
            for (Iterator children = e.iterateSubExpressions(); children.hasNext();) {

View Full Code Here

        presenter.startElement("functions");
        for (int i=0; i<libraryList.size(); i++) {
            FunctionLibrary lib = (FunctionLibrary)libraryList.get(i);
            if (lib instanceof ExecutableFunctionLibrary) {
                for (Iterator f = ((ExecutableFunctionLibrary)lib).iterateFunctions(); f.hasNext();) {
                    UserFunction func = (UserFunction)f.next();
                    presenter.startElement("function");
                    presenter.emitAttribute("name", func.getFunctionName().getDisplayName());
                    presenter.emitAttribute("line", func.getLineNumber()+"");
                    presenter.emitAttribute("module", func.getSystemId());
                    func.getBody().explain(presenter);
                    presenter.endElement();
                }
            }
        }
        presenter.endElement();

View Full Code Here

        if (fd != null) {
            UserFunctionCall ufc = new UserFunctionCall();
            ufc.setFunctionName(fd.getFunctionName());
            ufc.setArguments(arguments);
            ufc.setStaticType(fd.getResultType());
            UserFunction fn = fd.getUserFunction();
            if (fn == null) {
                // not yet compiled
                fd.registerReference(ufc);
                ufc.setConfirmed(true);
            } else {

View Full Code Here

    public SequenceIterator iterate(XPathContext context) throws XPathException {
        final XPathContextMajor cm = (XPathContextMajor)context;
        while (true) {
            SequenceIterator iter = operand.iterate(cm);
            ValueRepresentation extent = SequenceExtent.makeSequenceExtent(iter);
            UserFunction fn = cm.getTailCallFunction();
            if (fn == null) {
               return Value.asIterator(extent);
            }
            if (fn != containingFunction) {
                return Value.asIterator(tailCallDifferentFunction(fn, cm));

View Full Code Here


    public Item evaluateItem(XPathContext context) throws XPathException {
        final XPathContextMajor cm = (XPathContextMajor)context;
        while (true) {
            Item item = operand.evaluateItem(context);
            UserFunction fn = cm.getTailCallFunction();
            if (fn == null) {
               return item;
            }
            if (fn != containingFunction) {
                return Value.asItem(tailCallDifferentFunction(fn, cm));

View Full Code Here


    public void process(XPathContext context) throws XPathException {
        final XPathContextMajor cm = (XPathContextMajor)context;
        while (true) {
            operand.process(context);
            UserFunction fn = cm.getTailCallFunction();
            if (fn == null) {
               return;
            }
            if (fn != containingFunction) {
                Value.asValue(tailCallDifferentFunction(fn, cm)).process(cm);

View Full Code Here

     * the function call, but no function was found.
     */


    public Expression bind(StructuredQName functionName, Expression[] staticArgs, StaticContext env)
            throws XPathException {
        UserFunction fn = (UserFunction)functions.get(makeKey(functionName, staticArgs.length));
        if (fn == null) {
            return null;
        }
        ExpressionVisitor visitor = ExpressionVisitor.make(env);
        UserFunctionCall fc = new UserFunctionCall();
        fc.setFunctionName(functionName);
        fc.setArguments(staticArgs);
        fc.setFunction(fn);
        fc.checkFunctionCall(fn, visitor);
        fc.setStaticType(fn.getResultType(config.getTypeHierarchy()));
        return fc;
    }

View Full Code Here

0 1 2

TOP

Related Classes of net.sf.saxon.instruct.UserFunction

net.sf.saxon.Controller

net.sf.saxon.expr.ExpressionTool

net.sf.saxon.expr.TailCallLoop

net.sf.saxon.functions.ExecutableFunctionLibrary

net.sf.saxon.om.Item

net.sf.saxon.om.NodeInfo

net.sf.saxon.om.SequenceIterator

net.sf.saxon.om.ValueRepresentation

net.sf.saxon.PreparedStylesheet

net.sf.saxon.query.XQueryFunctionLibrary

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.