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

        } else if (value instanceof AtomicValue) {
            return StaticProperty.EXACTLY_ONE;
        }
        try {
            SequenceIterator iter = value.iterate();
            Item next = iter.next();
            if (next == null) {
                return StaticProperty.EMPTY;
            } else {
                if (iter.next() != null) {
                    return StaticProperty.ALLOWS_ONE_OR_MORE;

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    public void process(XPathContext context) throws XPathException {
        SequenceIterator iter = value.iterate();
        SequenceReceiver out = context.getReceiver();
        while (true) {
            Item it = iter.next();
            if (it==null) break;
            out.append(it, NodeInfo.ALL_NAMESPACES);
        }
    }

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        Value v1 = ((Literal)obj).value;
        try {
            SequenceIterator i0 = v0.iterate();
            SequenceIterator i1 = v1.iterate();
            while (true) {
                Item m0 = i0.next();
                Item m1 = i1.next();
                if (m0==null && m1==null) {
                    return true;
                }
                if (m0==null || m1==null) {
                    return false;

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        return found;
    }


    public TailCall processLeavingTail(XPathContext context) throws XPathException {


        Item element = context.getContextItem();
        if (!(element instanceof HTMLNodeWrapper && ((HTMLNodeWrapper)element).getUnderlyingNode() instanceof Element)) {
            return null;
        }


        Element parent = (Element)((HTMLNodeWrapper)element).getUnderlyingNode();
        final PendingUpdateList pul = context.getController().getPendingUpdateList();
        SequenceIterator iter = content.iterate(context);
        while (true) {
            Item att = iter.next();
            if (att == null) {
                break;
            }
            if (att instanceof NodeInfo && ((NodeInfo)att).getNodeKind() == Type.ATTRIBUTE) {
                pul.add(new SetAttributeAction(parent, ((NodeInfo)att).getURI(), ((NodeInfo)att).getLocalPart(), att.getStringValue()));
            }
        }


        return null;
    }

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        return found;
    }


    public TailCall processLeavingTail(XPathContext context) throws XPathException {


        Item element = context.getContextItem();
        if (!(element instanceof HTMLNodeWrapper && ((HTMLNodeWrapper)element).getUnderlyingNode() instanceof Element)) {
            return null;
        }


        Element parent = (Element)((HTMLNodeWrapper)element).getUnderlyingNode();
        final PendingUpdateList pul = context.getController().getPendingUpdateList();
        SequenceIterator iter = content.iterate(context);
        while (true) {
            Item att = iter.next();
            if (att == null) {
                break;
            }
            if (att instanceof NodeInfo && ((NodeInfo)att).getNodeKind() == Type.ATTRIBUTE) {
                pul.add(new RemoveAttributeAction(parent, ((NodeInfo)att).getURI(), ((NodeInfo)att).getLocalPart()));

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        SequenceIterator iter0 = null;


        if (maybeBoolean0) {
            iter0 = operand0.iterate(context);
            Item i01 = iter0.next();
            Item i02 = (i01 == null ? null : iter0.next());
            if (i01 instanceof BooleanValue && i02 == null) {
                boolean b = operand1.effectiveBooleanValue(context);
                return compare((BooleanValue)i01, singletonOperator, BooleanValue.get(b), comparer, context);
            }
            if (i01 == null && !maybeBoolean1) {
                return false;
            }
        }


        // If the second operand is a singleton boolean,
        // compare it with the effective boolean value of the other operand


        SequenceIterator iter1 = null;


        if (maybeBoolean1) {
            iter1 = operand1.iterate(context);
            Item i11 = iter1.next();
            Item i12 = (i11 == null ? null : iter1.next());
            if (i11 instanceof BooleanValue && i12 == null) {
                boolean b = operand0.effectiveBooleanValue(context);
                return compare(BooleanValue.get(b), singletonOperator, (BooleanValue)i11, comparer, context);
            }
            if (i11 == null && !maybeBoolean0) {

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    public boolean effectiveBooleanValue(XPathContext context) throws XPathException {
        int count = 0;
        SequenceIterator iter = operand.iterate(context);
        while (true) {
            Item item = iter.next();
            if (item == null) {
                break;
            }
            AtomicValue av = item.getTypedValue();
            count++;
            if (count > 1) {
                return false;
            }
            if (!!(av.convert(targetType, true) instanceof ValidationFailure)) {

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        c2.setCurrentTemplateRule(null);
        
        if (LogConfiguration.loggingIsEnabled() && LogController.traceIsEnabled()) {
          TraceListener listener = LogController.getTraceListener();
          while (true) {
              Item item = groupIterator.next();
              if (item == null) {
                  break;
              }
              listener.startCurrentItem(item);
              action.process(c2);
              listener.endCurrentItem(item);
          }
        } else {
          while (true) {
              Item item = groupIterator.next();
              if (item == null) {
                  break;
              }
              action.process(c2);
          }

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


    public Item evaluateItem(XPathContext context) throws XPathException {
        Item item = operand.evaluateItem(context);
        if (item==null) return null;
        return ((AtomicValue)item).convert(
                requiredPrimitiveType, true).asAtomic();
    }

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    }


    private boolean isInstance(SequenceIterator iter, XPathContext context) throws XPathException {
        int count = 0;
        while (true) {
            Item item = iter.next();
            if (item == null) break;
            count++;
            if (!targetType.matchesItem(item, false, context.getConfiguration())) {
                return false;
            }

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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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