PullEventTracer

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java.lang.Object
- net.sf.saxon.evpull.PullEventTracer

All Implemented Interfaces:

EventIterator, PullEvent
```
public class PullEventTracer
extends java.lang.Object
implements EventIterator
```
Diagnostic class to display the sequence of events reported by an EventIterator

Constructor Summary

Constructors
Constructor Description

PullEventTracer(EventIterator base, Configuration config)
Create a tracer for pull events

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`isFlatSequence()`	Determine whether the EventIterator returns a flat sequence of events, or whether it can return nested event iterators
`static void`	`main(java.lang.String[] args)`	Main method for testing only
`PullEvent`	`next()`	Get the next event in the sequence

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - 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 Detail
  - 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(java.lang.String[] args)
                 throws java.lang.Exception
```
    Main method for testing only
    
    Parameters:
    
    args - not used
    
    Throws:
    
    java.lang.Exception

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