Examples of net.sf.saxon.sort.AtomicComparer

net.sf.saxon.sort.AtomicComparer
A Comparator 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

            }
        }


        Comparator comp = env.getCollation(env.getDefaultCollationName());
        if (comp==null) comp = CodepointCollator.getInstance();
        comparer = new AtomicComparer(comp);


        // optimise count(x) eq 0 (or gt 0, ne 0, eq 0, etc)


        if (Aggregate.isCountFunction(operand0) &&
                operand1 instanceof AtomicValue) {

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        //AtomicComparer comparer = getAtomicComparer(1, context);
        BuiltInAtomicType type = argumentType;
        if (type == BuiltInAtomicType.UNTYPED_ATOMIC) {
            type = BuiltInAtomicType.DOUBLE;
        }
        AtomicComparer comparer =
                GenericAtomicComparer.makeAtomicComparer(type, type, collator, context);
        SequenceIterator iter = argument[0].iterate(context);
        try {
            return minimax(iter, operation, comparer, ignoreNaN, context);
        } catch (XPathException err) {

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                sortKey.expression = new Atomizer(key, config);
            }


            SortKeyDefinition sk = new SortKeyDefinition();
            sk.setSortKey(sortKey.expression);
            AtomicComparer comp = sk.makeComparator(context);
            AtomicComparer[] comps = {comp};


            iterator = new SortedIterator(context, iterator, this, comps);
            ((SortedIterator)iterator).setHostLanguage(Configuration.XPATH);
        }

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


    public SequenceIterator iterate(XPathContext context) throws XPathException {
        AtomicComparer comp = atomicComparer;
        if (comp == null) {
            int type = argument[0].getItemType(context.getConfiguration().getTypeHierarchy()).getPrimitiveType();
            comp = makeAtomicSortComparer(type, context);
        } else {
            comp = comp.provideContext(context);
        }
        SequenceIterator iter = argument[0].iterate(context);
        return new DistinctIterator(iter, comp);
    }

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

net.sf.saxon.expr.GeneralComparison

net.sf.saxon.expr.SingletonComparison

net.sf.saxon.expr.ValueComparison

net.sf.saxon.functions.CollatingFunction

net.sf.saxon.functions.Compare

net.sf.saxon.functions.DeepEqual

net.sf.saxon.functions.DistinctValues

net.sf.saxon.functions.IndexOf

net.sf.saxon.functions.Minimax

net.sf.saxon.om.AbstractNode

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