Examples of client.net.sf.saxon.ce.om.Item

client.net.sf.saxon.ce.om.Item
An Item is an object that can occur as a member of a sequence. It corresponds directly to the concept of an item in the XPath 2.0 data model. There are two kinds of Item: atomic values, and nodes.
This interface is part of the public Saxon API. As such (starting from Saxon 8.4), methods that form part of the stable API are labelled with a JavaDoc "since" tag to identify the Saxon release at which they were introduced.
Note: there is no method getItemType(). This is to avoid having to implement it on every implementation of NodeInfo. Instead, use the static method Type.getItemType(Item). @author Michael H. Kay @since 8.4

         * @param out the output stream
         */


        public void print() {
            //out.println("  at xsl:apply-templates " + showLocation());
            Item node = getContextItem();
            if (node instanceof NodeInfo) {
                //out.println("     processing " + Navigator.getPath((NodeInfo)node));
            }
        }

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        this.action = action;
        this.context = context;
    }


    public Item next() throws XPathException {
        Item nextItem;
        while (true) {
            if (stepIterator != null) {
                nextItem = stepIterator.next();
                if (nextItem != null) {
                    break;

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        }


        // Make a copy of the context item
        SequenceIterator currentIterator = context.getCurrentIterator();
        if (currentIterator != null) {
            Item contextItem = currentIterator.current();
            UnfailingIterator single = SingletonIterator.makeIterator(contextItem);
            single.next();
            savedXPathContext.setCurrentIterator(single);
            // we don't save position() and last() because we have no way
            // of restoring them. So the caller must ensure that a Closure is not

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    public void process(XPathContext context) throws XPathException {
        if (expression == null) {
            // This is a Closure that simply wraps a SequenceIterator supplied from the Java level
            SequenceReceiver out = context.getReceiver();
            while (true) {
                Item item = inputIterator.next();
                if (item == null) {
                    break;
                }
                out.append(item, NodeInfo.ALL_NAMESPACES);
            }

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        count = 0;


        // initialise the array with data


        while (true) {
            Item item = base.next();
            if (item == null) {
                break;
            }
            if (count==allocated) {
                allocated *= 2;

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        return (next() != null);
    }




    public Item next() {
        Item n = base.next();
        if (n instanceof NodeInfo && !atomizing) {
            current = wrappingFunction.makeWrapper((NodeInfo) n, parent);
        } else {
            current = (NodeInfo) n;
        }

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     *          if any dynamic error occurs evaluating the
     *          expression
     */


    public boolean effectiveBooleanValue(XPathContext context) throws XPathException {
        Item contextItem = context.getContextItem();
        return contextItem instanceof NodeInfo
                && pattern.matches((NodeInfo)contextItem, context);
    }

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     * @return the next item that matches the predicate
    */


    protected Item getNextMatchingItem() throws XPathException {
        while (true) {
            Item next = base.next();
            if (next == null) {
                return null;
            }
            if (matches()) {
                return next;

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        // The code is almost identical to the code in ExpressionTool#effectiveBooleanValue
        // except for the handling of a numeric result


        SequenceIterator iterator = filter.iterate(filterContext);
        Item first = iterator.next();
        if (first == null) {
            return false;
        }
        if (first instanceof NodeInfo) {
            return true;
        } else {
            if (first instanceof BooleanValue) {
                if (iterator.next() != null) {
                    ExpressionTool.ebvError("sequence of two or more items starting with a boolean");
                }
                return ((BooleanValue)first).getBooleanValue();
            } else if (first instanceof StringValue) {
                if (iterator.next() != null) {
                    ExpressionTool.ebvError("sequence of two or more items starting with a string");
                }
                return (first.getStringValueCS().length()!=0);
            } else if (first instanceof IntegerValue) {
                if (iterator.next() != null) {
                    ExpressionTool.ebvError("sequence of two or more items starting with a numeric value");
                }
                return ((IntegerValue)first).intValue() == base.position();

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    private void buildIndexedGroups() throws XPathException {
        HashMap index = new HashMap(40);
        XPathContext c2 = keyContext.newMinorContext();
        c2.setCurrentIterator(population);
        while (true) {
            Item item = population.next();
            if (item==null) {
                break;
            }
            processItem(index, item, c2);
        }

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Related Classes of client.net.sf.saxon.ce.om.Item

client.net.sf.saxon.ce.expr.AdjacentTextNodeMerger

client.net.sf.saxon.ce.expr.AtomicSequenceConverter

client.net.sf.saxon.ce.expr.Atomizer

client.net.sf.saxon.ce.expr.CardinalityChecker

client.net.sf.saxon.ce.expr.CastableExpression

client.net.sf.saxon.ce.expr.ContextItemExpression

client.net.sf.saxon.ce.expr.ContextMappingIterator

client.net.sf.saxon.ce.expr.Expression

client.net.sf.saxon.ce.expr.FilterIterator

client.net.sf.saxon.ce.expr.ForExpression

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