Examples of net.sf.saxon.expr.MappingIterator

net.sf.saxon.expr.MappingIterator
MappingIterator merges a sequence of sequences into a single flat sequence. It takes as inputs an iteration, and a mapping function to be applied to each Item returned by that iteration. The mapping function itself returns another iteration. The result is an iteration of the concatenation of all the iterations returned by the mapping function.
This is a powerful class. It is used, with different mapping functions, in a great variety of ways. It underpins the way that "for" expressions and path expressions are evaluated, as well as sequence expressions. It is also used in the implementation of the document(), key(), and id() functions.

        }


        SequenceIterator documents =
                top.iterateAxis(Axis.CHILD, NodeKindTest.ELEMENT);


        return new MappingIterator(documents, this, context, null);


    }

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    public SequenceIterator iterate(XPathContext context) throws XPathException {
        SequenceIterator iter = argument[0].iterate(context);
        Object[] info = new Object[2];
        info[0] = new HashSet();
        info[1] = getAtomicSortComparer(1, context);
        return new MappingIterator(iter, this, null, info);
    }

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        DocumentMappingInfo info = new DocumentMappingInfo();
        info.baseURI = baseURI;
        info.stylesheetURI = expressionBaseURI;


        MappingIterator map = new MappingIterator(
                                    hrefSequence,
                                    this,
                                    context,
                                    info);

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            KeyContextInfo info = new KeyContextInfo();
            info.document = doc;
            info.context = context;


            SequenceIterator keys = argument[0].iterate(context);
            SequenceIterator allValues = new MappingIterator(keys, this, null, info);
            return new DocumentOrderIterator(allValues, LocalOrderComparer.getInstance());
        }
    }

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    */


    public SequenceIterator iterate(XPathContext context) throws XPathException {
        NodeInfo element = (NodeInfo)argument[0].evaluateItem(context);
        SequenceIterator nsNodes = element.iterateAxis(Axis.NAMESPACE);
        return new MappingIterator(nsNodes, this, null, null);
    }

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     */


    public SequenceIterator getTypedValue(CharSequence value, NodeInfo node) throws ValidationException {
        SequenceIterator iter = new StringTokenIterator(value.toString());
        Object[] data = {node, getItemType()};
        return new MappingIterator(iter, this, null, data);
    }

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Related Classes of net.sf.saxon.expr.MappingIterator

net.sf.saxon.functions.Collection

net.sf.saxon.functions.DistinctValues

net.sf.saxon.functions.Document

net.sf.saxon.functions.Idref

net.sf.saxon.functions.InScopeNamespaces

net.sf.saxon.om.Item

net.sf.saxon.om.SequenceIterator

net.sf.saxon.type.ListType

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