Package client.net.sf.saxon.ce.expr.sort

Examples of client.net.sf.saxon.ce.expr.sort.GenericAtomicComparer

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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 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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    /**
    * 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 IntegerValue.MINUS_ONE;
        } else if (result > 0) {
            return IntegerValue.PLUS_ONE;
        } else {
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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 client.net.sf.saxon.ce.expr.sort.GenericAtomicComparer

  • client.net.sf.saxon.ce.expr.GeneralComparison10
  • client.net.sf.saxon.ce.functions.CollatingFunction
  • client.net.sf.saxon.ce.functions.Compare
  • client.net.sf.saxon.ce.functions.DeepEqual
  • client.net.sf.saxon.ce.functions.IndexOf
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