Class TuplePull

    • Constructor Detail

      • TuplePull

        public TuplePull()
    • Method Detail

      • nextTuple

        public abstract boolean nextTuple​(XPathContext context)
                                   throws XPathException
        Move on to the next tuple. Before returning, this method must set all the variables corresponding to the "returned" tuple in the local stack frame associated with the context object
        Parameters:
        context - the dynamic evaluation context
        Returns:
        true if another tuple has been generated; false if the tuple stream is exhausted. If the method returns false, the values of the local variables corresponding to this tuple stream are undefined.
        Throws:
        XPathException - if any error occurs
      • close

        public void close()
        Close the tuple stream, indicating that although not all tuples have been read, no further tuples are required and resources can be released