Class ReturnClausePush


  • public class ReturnClausePush
    extends TuplePush
    The class represents the final stage in a push-mode tuple pipeline. The previous stages have stored the values corresponding to the current tuple in local variables on the stack; all that remains is to evaluate the return expression (with reference to these variables) and send the results to the current receiver.
    • 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
      void processTuple​(XPathContext context)
      Notify the availability of the next tuple.
      • Methods inherited from class java.lang.Object

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

    • Method Detail

      • processTuple

        public void processTuple​(XPathContext context)
                          throws XPathException
        Notify the availability of the next tuple. Before calling this method, the supplier of the tuples must set all the variables corresponding to the supplied tuple in the local stack frame associated with the context object
        Specified by:
        processTuple in class TuplePush
        Parameters:
        context - the dynamic evaluation context
        Throws:
        XPathException - if a dynamic error occurs
      • close

        public void close()
                   throws XPathException
        Close the tuple stream, indicating that no more tuples will be supplied
        Overrides:
        close in class TuplePush
        Throws:
        XPathException - if a dynamic error occurs