Package net.sf.saxon.evpull
Class PullEventTracer
- java.lang.Object
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- net.sf.saxon.evpull.PullEventTracer
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- 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
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Constructor Summary
Constructors Constructor Description PullEventTracer(EventIterator base, Configuration config)
Create a tracer for pull events
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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 iteratorsstatic void
main(java.lang.String[] args)
Main method for testing onlyPullEvent
next()
Get the next event in the sequence
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Constructor Detail
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PullEventTracer
public PullEventTracer(EventIterator base, Configuration config)
Create a tracer for pull events- Parameters:
base
- the event iterator whose events are to be tracedconfig
- the Saxon configuration
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Method Detail
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next
public PullEvent next() throws XPathException
Get the next event in the sequence- Specified by:
next
in interfaceEventIterator
- 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
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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 interfaceEventIterator
- Returns:
- true if the next() method is guaranteed never to return an EventIterator
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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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