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

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

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

client.net.sf.saxon.ce.expr.sort.GroupIterator
A GroupIterator is an iterator that iterates over a sequence of groups. The normal methods such as next() and current() always deliver the leading item of the group. Additional methods are available to get the grouping key for the current group (only applicable to group-by and group-adjacent), and to get all the members of the current group.

    /**
    * Return an iteration over the result sequence
    */


    public SequenceIterator iterate(XPathContext c) throws XPathException {
        GroupIterator gi = c.getCurrentGroupIterator();
        if (gi==null) {
            return EmptyIterator.getInstance();
        }
        return gi.iterateCurrentGroup();
    }

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    /**
     * Evaluate the expression
     */


    public Item evaluateItem(XPathContext c) throws XPathException {
        GroupIterator gi = c.getCurrentGroupIterator();
        if (gi==null) {
            return null;
        }
        return gi.getCurrentGroupingKey();
     }

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Related Classes of client.net.sf.saxon.ce.expr.sort.GroupIterator

client.net.sf.saxon.ce.functions.CurrentGroup

client.net.sf.saxon.ce.functions.CurrentGroupingKey

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