Examples of org.pdf4j.saxon.sort.DocumentOrderIterator

org.pdf4j.saxon.sort.DocumentOrderIterator
DocumentOrderIterator takes as input an iteration of nodes in any order, and returns as output an iteration of the same nodes in document order, eliminating any duplicates.

        if (white) {
            StringTokenIterator tokens = new StringTokenIterator(idrefs);
            IdMappingFunction map = new IdMappingFunction();
            map.document = doc;
            SequenceIterator result = new MappingIterator(tokens, map);
            return new DocumentOrderIterator(result, LocalOrderComparer.getInstance());
        } else {
            return SingletonIterator.makeIterator(doc.selectID(idrefs));
        }
    }

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    public static SequenceIterator getIdMultiple(DocumentInfo doc, SequenceIterator idrefs) throws XPathException {
        IdMappingFunction map = new IdMappingFunction();
        map.document = doc;
        SequenceIterator result = new MappingIterator(idrefs, map);
        return new DocumentOrderIterator(result, LocalOrderComparer.getInstance());
    }

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        ItemMappingIterator iter = new ItemMappingIterator(hrefSequence, map);


        Expression expression = argument[0];
        if (Cardinality.allowsMany(expression.getCardinality())) {
            return new DocumentOrderIterator(iter, GlobalOrderComparer.getInstance());
            // this is to make sure we eliminate duplicates: two href's might be the same
        } else {
            return iter;
        }
    }

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        map.document = doc;
        map.keyContext = context;
        map.keyManager =  context.getController().getKeyManager();
        map.keySet = map.keyManager.getKeyDefinitionSet(StandardNames.getStructuredQName(StandardNames.XS_IDREFS));
        SequenceIterator allValues = new MappingIterator(keys, map);
        return new DocumentOrderIterator(allValues, LocalOrderComparer.getInstance());
    }

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                }
            };


            SequenceIterator keys = argument[1].iterate(context);
            SequenceIterator allValues = new MappingIterator(keys, map);
            allResults = new DocumentOrderIterator(allValues, LocalOrderComparer.getInstance());
        } else {
            try {
                AtomicValue keyValue = (AtomicValue)argument[1].evaluateItem(context);
                if (keyValue == null) {
                    return EmptyIterator.getInstance();

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                    } else {
                        throw reportMixedItems(loc, context);
                    }
                }
            };
            return new DocumentOrderIterator(
                new ItemMappingIterator(result.getAnother(), nodeChecker),
                GlobalOrderComparer.getInstance());
        }


    }

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    public SequenceIterator iterate(final XPathContext c) throws XPathException {
        SequenceIterator i1 = operand0.iterate(c);
        //return Type.isNodeType(getItemType()) && isSingleton();
        // this is a sufficient condition, but other expressions override this method
        if ((operand0.getSpecialProperties() & StaticProperty.ORDERED_NODESET) == 0) {
            i1 = new DocumentOrderIterator(i1, GlobalOrderComparer.getInstance());
        }
        SequenceIterator i2 = operand1.iterate(c);
        //return Type.isNodeType(getItemType()) && isSingleton();
        // this is a sufficient condition, but other expressions override this method
        if ((operand1.getSpecialProperties() & StaticProperty.ORDERED_NODESET) == 0) {
            i2 = new DocumentOrderIterator(i2, GlobalOrderComparer.getInstance());
        }
        switch (operator) {
            case Token.UNION:
                return new UnionEnumeration(i1, i2,
                                            GlobalOrderComparer.getInstance());

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Related Classes of org.pdf4j.saxon.sort.DocumentOrderIterator

org.pdf4j.saxon.expr.SlashExpression

org.pdf4j.saxon.expr.VennExpression

org.pdf4j.saxon.functions.Document

org.pdf4j.saxon.functions.Id

org.pdf4j.saxon.functions.Idref

org.pdf4j.saxon.functions.KeyFn

org.pdf4j.saxon.om.NodeInfo

org.pdf4j.saxon.value.SequenceExtent

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