Class PullEventTracer

java.lang.Object
net.sf.saxon.evpull.PullEventTracer
All Implemented Interfaces:
EventIterator, PullEvent

public class PullEventTracer extends Object implements EventIterator
Diagnostic class to display the sequence of events reported by an EventIterator
  • Constructor Details

    • PullEventTracer

      public PullEventTracer(EventIterator base, Configuration config)
      Create a tracer for pull events
      Parameters:
      base - the event iterator whose events are to be traced
      config - the Saxon configuration
  • Method Details

    • next

      public PullEvent next() throws XPathException
      Get the next event in the sequence
      Specified by:
      next in interface EventIterator
      Returns:
      the next event, or null when the sequence is exhausted. Note that since an EventIterator is itself a PullEvent, this method may return a nested iterator.
      Throws:
      XPathException - if a dynamic evaluation error occurs
    • isFlatSequence

      public boolean isFlatSequence()
      Determine whether the EventIterator returns a flat sequence of events, or whether it can return nested event iterators
      Specified by:
      isFlatSequence in interface EventIterator
      Returns:
      true if the next() method is guaranteed never to return an EventIterator
    • main

      public static void main(String[] args) throws Exception
      Main method for testing only
      Parameters:
      args - not used
      Throws:
      Exception