Examples of net.sf.saxon.sort.GenericAtomicComparer

net.sf.saxon.sort.GenericAtomicComparer
An AtomicComparer used for comparing atomic values of arbitrary item types. It encapsulates a Collator that is used when the values to be compared are strings. It also supports a separate method for testing equality of items, which can be used for data types that are not ordered. @author Michael H. Kay

        }
        try {
            return DeepEqual.deepEquals(
                    SingletonIterator.makeIterator(node),
                    SingletonIterator.makeIterator(((NodeOverNodeInfo)arg).node),
                    new GenericAtomicComparer(CodepointCollator.getInstance(),
                            node.getConfiguration().getConversionContext()),
                    node.getConfiguration(),
                    DeepEqual.INCLUDE_PREFIXES |
                        DeepEqual.INCLUDE_COMMENTS |
                        DeepEqual.COMPARE_STRING_VALUES |

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    /**
    * Evaluate the function to return an iteration of selected nodes.
    */


    public SequenceIterator iterate(XPathContext context) throws XPathException {
        GenericAtomicComparer comparer = getAtomicComparer(2, context);
        SequenceIterator seq = argument[0].iterate(context);
        AtomicValue val = (AtomicValue)argument[1].evaluateItem(context);
        return new IndexIterator(seq, val, comparer);
    }

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     * @return a GenericAtomicComparer that can be used to compare atomic values.
     */


    protected GenericAtomicComparer getAtomicComparer(int arg, XPathContext context) throws XPathException {
        // TODO:PERF avoid creating a new object on each call when the collation is specified dynamically
        return new GenericAtomicComparer(getCollator(arg, context), context);
    }

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    /**
    * Evaluate the expression
    */


    public Item evaluateItem(XPathContext context) throws XPathException {
        GenericAtomicComparer collator = getAtomicComparer(2, context);


        SequenceIterator op1 = argument[0].iterate(context);
        SequenceIterator op2 = argument[1].iterate(context);


        Configuration config =

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        if (comp==null) {
            comp = CodepointCollator.getInstance();
        }


        XPathContext context = env.makeEarlyEvaluationContext();
        comparer = new GenericAtomicComparer(comp, context);


        // evaluate the expression now if both arguments are constant


        if ((operand0 instanceof Literal) && (operand1 instanceof Literal)) {
            return Literal.makeLiteral((AtomicValue)evaluateItem(context));

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            throw new IllegalArgumentException("Other Node must wrap a Saxon NodeInfo");
        }
        return DeepEqual.deepEquals(
                SingletonIterator.makeIterator(node),
                SingletonIterator.makeIterator(((NodeOverNodeInfo)arg).node),
                new GenericAtomicComparer(CodepointCollator.getInstance(),
                        node.getConfiguration().getConversionContext()),
                node.getConfiguration(),
                DeepEqual.INCLUDE_PREFIXES |
                    DeepEqual.INCLUDE_COMMENTS |
                    DeepEqual.COMPARE_STRING_VALUES |

View Full Code Here

    /**
    * Evaluate the expression
    */


    public Item evaluateItem(XPathContext context) throws XPathException {
        GenericAtomicComparer collator = getAtomicComparer(2, context);


        SequenceIterator op1 = argument[0].iterate(context);
        SequenceIterator op2 = argument[1].iterate(context);


        Configuration config =

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        AtomicValue arg1 = (AtomicValue)argument[1].evaluateItem(context);
        if (arg1==null) {
            return null;
        }


        GenericAtomicComparer collator = getAtomicComparer(2, context);


        int result = collator.compareAtomicValues(arg0, arg1);
        if (result < 0) {
            return Int64Value.MINUS_ONE;
        } else if (result > 0) {
            return Int64Value.PLUS_ONE;
        } else {

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     * @return a GenericAtomicComparer that can be used to compare atomic values.
     */


    protected GenericAtomicComparer getAtomicComparer(int arg, XPathContext context) throws XPathException {
        // TODO:PERF avoid creating a new object on each call when the collation is specified dynamically
        return new GenericAtomicComparer(getCollator(arg, context), context);
    }

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        if (comp==null) {
            comp = CodepointCollator.getInstance();
        }


        XPathContext context = env.makeEarlyEvaluationContext();
        comparer = new GenericAtomicComparer(comp, context);


        // evaluate the expression now if both arguments are constant


        if ((operand0 instanceof Literal) && (operand1 instanceof Literal)) {
            return Literal.makeLiteral((AtomicValue)evaluateItem(context));

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Related Classes of net.sf.saxon.sort.GenericAtomicComparer

net.sf.saxon.dom.NodeOverNodeInfo

net.sf.saxon.expr.GeneralComparison10

net.sf.saxon.functions.CollatingFunction

net.sf.saxon.functions.Compare

net.sf.saxon.functions.DeepEqual

net.sf.saxon.functions.IndexOf

net.sf.saxon.Platform

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