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

    * @return the NodeInfo of the first selected element, or null if no element
    * is selected
    */


    public NodeInfo getNode(XPathContext context) throws XPathException {
        Item current = context.getContextItem();
        if (current==null) {
            dynamicError("Finding root of tree: the context item is undefined", "XPDY0002", context);
        }
        if (current instanceof NodeInfo) {
            DocumentInfo doc = ((NodeInfo)current).getDocumentRoot();

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    /**
     * Evaluate as an expression.
     */


    public Item evaluateItem(XPathContext context) throws XPathException {
        Item contentItem = select.evaluateItem(context);
        if (contentItem == null) {
            return null;
        }
        String content = contentItem.getStringValue();
        content = checkContent(content, context);
        final TypeHierarchy th = context.getConfiguration().getTypeHierarchy();
        Orphan o = new Orphan(context.getConfiguration());
        o.setNodeKind((short)getItemType(th).getPrimitiveType());
        o.setStringValue(content);

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    /**
    * Evaluate as an Item.
    */


    public Item evaluateItem(XPathContext context) throws XPathException {
        Item item = operand.evaluateItem(context);
        if (item==null) return null;
        testConformance(item, context);
        return item;
    }

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    /**
    * Evaluate as an Item. This should only be called if the expression has cardinality zero-or-one
    */


    public Item evaluateItem(XPathContext context) throws XPathException {
        Item item = operand.evaluateItem(context);
        if (item==null) return null;
        return promote(((AtomicValue)item));
    }

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        // Check for duplicate parameter names


        AxisIterator iter = iterateAxis(Axis.PRECEDING_SIBLING);
        while (true) {
            Item prev = iter.next();
            if (prev == null) {
                break;
            }
            if (prev instanceof XSLWithParam) {
                if (this.getVariableQName().equals(((XSLWithParam)prev).getVariableQName())) {

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        SequenceReceiver out = context.getReceiver();
        FastStringBuffer fsb = new FastStringBuffer(FastStringBuffer.MEDIUM);
        SequenceIterator iter = getBaseExpression().iterate(context);
        boolean prevText = false;
        while (true) {
            Item item = iter.next();
            if (item == null) {
                break;
            }
            if (isTextNode(item)) {
                CharSequence s = item.getStringValueCS();
                if (s.length() > 0) {
                    fsb.append(s);
                    prevText = true;
                }

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                SequenceIterator iterator = ((Literal)children[i]).getValue().iterate();
                if (currentLiteralList == null) {
                    currentLiteralList = new ArrayList<Item>(10);
                }
                while (true) {
                    Item item = iterator.next();
                    if (item == null) {
                        break;
                    }
                    currentLiteralList.add(item);
                }

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    * @param context The context for the evaluation
    * @return the parent of the current node defined by the context
    */


    public NodeInfo getNode(XPathContext context) throws XPathException {
        Item item = context.getContextItem();
        if (item==null) {
            dynamicError("The context item is not set", "XPDY0002", context);
        }
        if (item instanceof NodeInfo) {
            return ((NodeInfo)item).getParent();

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        return oneToOne;
    }


    public Item next() throws XPathException {
        while (true) {
            Item nextSource = base.next();
            if (nextSource == null) {
                current = null;
                position = -1;
                return null;
            }

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            PipelineConfiguration pipe = controller.makePipelineConfiguration();
            seq.setPipelineConfiguration(pipe);
            c2.setTemporaryReceiver(seq);
            process(c2);
            seq.close();
            Item result = seq.getFirstItem();
            seq.reset();
            return result;
        }
    }

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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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