Examples of org.pdf4j.saxon.type.TypeHierarchy$ItemTypePair

org.pdf4j.saxon.type.TypeHierarchy
This class exists to provide answers to questions about the type hierarchy. Because such questions are potentially expensive, it caches the answers. There is one instance of this class for a Configuration.

    * Notify all references to this variable of the data type
    */


    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
                    // now, we do a quick check. See test bug64
                    int relation = th.relationship(select.getItemType(th), type.getPrimaryType());
                    if (relation == TypeHierarchy.SAME_TYPE || relation == TypeHierarchy.SUBSUMED_BY) {
                        constantValue = ((Literal)select).getValue();
                    }
                }
                if (select != null) {

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    protected ItemType getReturnedItemType() {
        if (select==null) {
            return getCommonChildItemType();
        } else {
            final TypeHierarchy th = getConfiguration().getTypeHierarchy();
            return select.getItemType(th);
        }
    }

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            } catch (XPathException err) {
                compileError(err);
            }
        }
        final TypeHierarchy th = config.getTypeHierarchy();
        BuiltInAtomicType useType = (BuiltInAtomicType)use.getItemType(th).getPrimitiveItemType();
        if (backwardsCompatibleModeIsEnabled()) {
            if (!useType.equals(BuiltInAtomicType.STRING) && !useType.equals(BuiltInAtomicType.UNTYPED_ATOMIC)) {
                use = new AtomicSequenceConverter(use, BuiltInAtomicType.STRING);
                useType = BuiltInAtomicType.STRING;

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     * represent the same ItemType.
     * @since 9.1
     */


    public boolean subsumes(ItemType other) {
        TypeHierarchy th = processor.getUnderlyingConfiguration().getTypeHierarchy();
        return th.isSubType(other.getUnderlyingItemType(), underlyingType);
    }

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    public Pattern analyze(ExpressionVisitor visitor, ItemType contextItemType) throws XPathException {


        // analyze each component of the pattern
        StaticContext env = visitor.getStaticContext();
        final TypeHierarchy th = visitor.getConfiguration().getTypeHierarchy();
        if (parentPattern != null) {
            parentPattern = parentPattern.analyze(visitor, contextItemType);
            // Check that this step in the pattern makes sense in the context of the parent step
            AxisExpression step;
            if (nodeTest.getPrimitiveType() == Type.ATTRIBUTE) {

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     * @throws XPathException if compile-time errors are found.
     */


    public GlobalVariable compile(Executable exec, int slot) throws XPathException {


        TypeHierarchy th = exec.getConfiguration().getTypeHierarchy();
        GlobalVariable var;
        if (isParameter) {
            var = new GlobalParam();
            var.setExecutable(exec);
            var.setRequiredParam(value==null);

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            }


            if (var.getRequiredType() == SequenceType.ANY_SEQUENCE && !(var instanceof GlobalParam)) {
                // no type was declared; try to deduce a type from the value
                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) {

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        } else {
            Item item = base.current();
            if (item instanceof NodeInfo) {
                return ((NodeInfo)item).getTypeAnnotation();
            } else {
                final TypeHierarchy th = pipe.getConfiguration().getTypeHierarchy();
                return ((AtomicType)((AtomicValue)item).getItemType(th)).getFingerprint();
            }
        }
    }

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        RoleLocator role = new RoleLocator(RoleLocator.VARIABLE, getVariableQName(), 0);
        //role.setSourceLocator(this);
        sequence = TypeChecker.strictTypeCheck(
                sequence, requiredType, role, visitor.getStaticContext());
        final TypeHierarchy th = visitor.getConfiguration().getTypeHierarchy();
        final ItemType actualItemType = sequence.getItemType(th);


        refineTypeInformation(actualItemType,
                sequence.getCardinality(),
                (sequence instanceof Literal ? ((Literal) sequence).getValue() : null),

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     * Arithmetic: anyAtomicType + AnyAtomicType
     */


    private static class AnyPlusAny extends Calculator {
        public AtomicValue compute(AtomicValue a, AtomicValue b, XPathContext c) throws XPathException {
            TypeHierarchy th = c.getConfiguration().getTypeHierarchy();
            Calculator calc = getCalculator(
                    a.getItemType(th).getPrimitiveType(), b.getItemType(th).getPrimitiveType(), PLUS, true);
            if (calc == null) {
                throw new XPathException("Unsuitable types for + operation (" +
                        Type.displayTypeName(a) + ", " + Type.displayTypeName(b) + ")", "XPTY0004", c);

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