Class WindowClausePull

  • public class WindowClausePull
    extends TuplePull
    Implement a sliding or tumbling window clause of a FLWOR expression in tuple-pull mode. The entire window processing is activated once for each input tuple, and it generates one output tuple for each identified window.
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void close()
      Close the tuple stream, indicating that no more tuples will be supplied
      boolean nextTuple​(XPathContext context)
      Move on to the next tuple.
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Method Detail

      • nextTuple

        public 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
        Specified by:
        nextTuple in class TuplePull
        context - the dynamic evaluation context
        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.
      • close

        public void close()
        Close the tuple stream, indicating that no more tuples will be supplied
        close in class TuplePull