Examples of net.sf.saxon.value.Value.iterate()

net.sf.saxon.value.Value.iterate()
Iterate over the items contained in this value. @return an iterator over the sequence of items @throws XPathException if a dynamic error occurs. This is possible only in the case of valuesthat are materialized lazily, that is, where the iterate() method leads to computation of an expression that delivers the values.

            }
            if (o instanceof Item) {
                return SingletonIterator.makeIterator((Item)o);
            }
            Value value = (Value)o;
            return value.iterate();
        }
    }




}

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        Controller controller = context.getController();
        if (controller.isTracing()) {
            String label = argument[1].evaluateAsString(context).toString();
            Value value = Value.asValue(ExpressionTool.eagerEvaluate(argument[0], context));
            notifyListener(label, value, context);
            return value.iterate();
        } else {
            PrintStream out = controller.getTraceFunctionDestination();
            if (out == null) {
                return argument[0].iterate(context);
            } else {

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                    // common case (the atomized value of the node is a single atomic value)
                    results = null;
                    nextItem = (AtomicValue)atomized;
                    break;
                } else {
                    results = atomized.iterate();
                    nextItem = (AtomicValue)results.next();
                    if (nextItem == null) {
                        results = null;
                    } else {
                        break;

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        if (binding==null) {
            throw new IllegalStateException("saxon:assign binding has not been fixed up");
        }
        Value value = getSelectValue(context);
        if (value instanceof Closure) {
            value = new SequenceExtent(value.iterate(null));
        }
        if (binding.isGlobal()) {
            context.getController().getBindery().assignGlobalVariable((GlobalVariable)binding, value);
        } else {
            context.setLocalVariable(binding.getSlotNumber(), value);

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    private static String getCombinedKey(Value[] params) throws XPathException {
        StringBuffer sb = new StringBuffer(120);


        for (int i = 0; i < params.length; i++) {
            Value val = params[i];
            SequenceIterator iter = val.iterate(null);
            while (true) {
                Item item = iter.next();
                if (item == null) {
                    break;
                }

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        }
        if (o instanceof Item) {
            return o;
        }
        Value value = (Value)tuple.getObject();
        return value.iterate(context);
    }


}

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    */


    public SequenceIterator iterate(XPathContext c) throws XPathException {
        // System.err.println("Evaluate variable " + binding.getVariableName() + ", context = " + c);
        Value val = evaluateVariable(c);
        return val.iterate(c);


    }


    public Item evaluateItem(XPathContext c) throws XPathException {
        Value actual = evaluateVariable(c);

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    public SequenceIterator iterate(XPathContext context) throws XPathException {
        if (context.getController().isTracing()) {
            String label = argument[1].evaluateAsString(context);
            Value value = ExpressionTool.eagerEvaluate(argument[0], context);
            notifyListener(label, value, context);
            return value.iterate(context);
        } else {
            return new TracingIterator(argument[0].iterate(context), argument[1].evaluateAsString(context));
        }
    }

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    public Item evaluateItem(XPathContext c) throws XPathException {
        Value val = callFunction(c);
        if (val instanceof Item) {
            return (Item)val;
        } else {
            return val.iterate(c).next();
        }
    }


    /**
    * Call the function, returning an iterator over the results. (But if the function is

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            return function.call(actualArgs, c2, false);
        }


        public Value appendTo(SequenceReceiver out) throws XPathException {
            Value v = call();
            SequenceIterator fv = v.iterate(evaluationContext);
            while (true) {
                Item fvit = fv.next();
                if (fvit == null) return null;
                if (fvit instanceof UserFunctionCall.FunctionCallPackage) {
                    return (Value)fvit;

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