Class FoldingFunction

    • Constructor Detail

      • FoldingFunction

        public FoldingFunction()
    • Method Detail

      • getFold

        public abstract Fold getFold​(XPathContext context,
                                     Sequence... additionalArguments)
                              throws XPathException
        Create the Fold object which actually performs the evaluation. Must be implemented in every subclass.
        context - the dynamic evaluation context
        additionalArguments - the values of all arguments other than the first.
        the Fold object used to compute the function
        XPathException - if a dynamic error occurs
      • call

        public Sequence call​(XPathContext context,
                             Sequence[] arguments)
                      throws XPathException
        Evaluate the expression
        context - the dynamic evaluation context
        arguments - the values of the arguments, supplied as Sequences
        the result of the evaluation, in the form of a Sequence
        XPathException - if a dynamic error occurs during the evaluation of the expression
      • getStreamerName

        public java.lang.String getStreamerName()
        Description copied from class: SystemFunction
        Get a name that identifies the class that can be used to evaluate this function in streaming mode, that is, supplying one item or event at a time as it is delivered by the parser. Special streaming support is generally available in Saxon-EE for all system functions that take a sequence as their argument.
        getStreamerName in class SystemFunction
        a name that identifies a class that supports streamed evaluation of this system function, or null if no such class is available. The mapping of names to classes is defined in the Saxon-EE class StreamerMap. In non-streaming Saxon editions (HE and PE) the method always returns null.