Class ForClauseOuterPull


  • public class ForClauseOuterPull
    extends ForClausePull
    This class represents the tuple stream returned by a "for" clause in a FLWOR expression
    • Constructor Detail

    • Method Detail

      • nextTuple

        public boolean nextTuple​(XPathContext context)
                          throws XPathException
        Deliver the next output tuple. Before returning, this method must set all the variables corresponding to the output tuple in the local stack frame associated with the context object
        Overrides:
        nextTuple in class ForClausePull
        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
        Overrides:
        close in class ForClausePull