Examples of org.pdf4j.saxon.value.Value

org.pdf4j.saxon.value.Value
A value is the result of an expression but it is also an expression in its own right. Note that every value can be regarded as a sequence - in many cases, a sequence of length one.

    public void fixupReferences() throws XPathException {
        final SequenceType type = getRequiredType();
        final TypeHierarchy th = getConfiguration().getTypeHierarchy();
        final Iterator iter = references.iterator();
        while (iter.hasNext()) {
            Value constantValue = null;
            int properties = 0;
            if (this instanceof XSLVariable && !isAssignable()) {
                if (select instanceof Literal) {
                    // we can't rely on the constant value because it hasn't yet been type-checked,
                    // which could change it (eg by numeric promotion). Rather than attempt all the type-checking

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     * @param th the type hierarchy cache
    */


    public void fixupReference(BindingReference ref, TypeHierarchy th) throws XPathException {
        final SequenceType type = getRequiredType();
        Value constantValue = null;
        int properties = 0;
        Expression select = value;
        if (select instanceof Literal && !isParameter) {
            // we can't rely on the constant value because it hasn't yet been type-checked,
            // which could change it (eg by numeric promotion). Rather than attempt all the type-checking

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                try {
                    final TypeHierarchy th = visitor.getConfiguration().getTypeHierarchy();
                    final ItemType itemType = value.getItemType(th);
                    final int cardinality = value.getCardinality();
                    var.setRequiredType(SequenceType.makeSequenceType(itemType, cardinality));
                    Value constantValue = null;
                    if (value2 instanceof Literal) {
                        constantValue = ((Literal)value2).getValue();
                    }
                    for (Iterator iter = references.iterator(); iter.hasNext(); ) {
                        BindingReference ref = ((BindingReference)iter.next());

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    public XQResultSequence executeQuery() throws XQException {
        checkNotClosed();
        try {
            SequenceIterator iter = expression.iterator(context);
            if (scrollable) {
                Value value = Value.asValue(SequenceExtent.makeSequenceExtent(iter));
                return new SaxonXQSequence(value, this);
            } else {
                return new SaxonXQForwardSequence(iter, this);
            }
        } catch (XPathException de) {

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            Item item = iter.next();
            if (item == null) {
                break;
            }
            if (item instanceof NodeInfo) {
                Value atomizedValue = ((NodeInfo)item).atomize();
                int length = atomizedValue.getLength();
                count += length;
                if (count > 1) {
                    return false;
                }
                if (length != 0) {
                    AtomicValue av = (AtomicValue)atomizedValue.itemAt(0);
                    if (!isCastable(av, targetType, context)) {
                        return false;
                    }
                }
            } else {

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                        "A sequence of more than one item is not allowed as the " +
                        role.getMessage(), role.getErrorCode(), context);
                }
                result = item;
            } else {
                Value value = ((NodeInfo)item).atomize();
                found += value.getLength();
                if (found > 1) {
                     typeError(
                        "A sequence of more than one item is not allowed as the " +
                        role.getMessage(), role.getErrorCode(), context);
                }
                result = value.itemAt(0);
            }
        }
        if (found == 0 && !allowEmpty) {
            typeError("An empty sequence is not allowed as the " +
                             role.getMessage(), role.getErrorCode(), null);

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

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                    results = null;
                }
            }
            // Avoid calling next() to materialize the NodeInfo object
            if (base.moveNext()) {
                Value atomized = base.atomize();
                if (atomized instanceof AtomicValue) {
                    // 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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Related Classes of org.pdf4j.saxon.value.Value

org.pdf4j.saxon.event.SequenceReceiver

org.pdf4j.saxon.expr.Atomizer

org.pdf4j.saxon.expr.AxisAtomizingIterator

org.pdf4j.saxon.expr.BinaryExpression

org.pdf4j.saxon.expr.CastableExpression

org.pdf4j.saxon.expr.SingletonAtomizer

org.pdf4j.saxon.functions.CollatingFunction

org.pdf4j.saxon.functions.ExtensionFunctionCall

org.pdf4j.saxon.functions.Trace

org.pdf4j.saxon.instruct.ValueOf

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