Package net.sf.saxon.evpull
Class TracingEventIterator
java.lang.Object
net.sf.saxon.evpull.TracingEventIterator
- All Implemented Interfaces:
EventIterator
,PullEvent
This class is a filter for a sequence of pull events; it returns the input sequence unchanged,
but traces execution to System.err
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Constructor Summary
ConstructorsConstructorDescriptionCreate an event iterator that traces all events received from the base sequence, and returns them unchanged -
Method Summary
Modifier and TypeMethodDescriptionboolean
Determine whether the EventIterator returns a flat sequence of events, or whether it can return nested event iteratorsnext()
Get the next event in the sequence
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Constructor Details
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TracingEventIterator
Create an event iterator that traces all events received from the base sequence, and returns them unchanged- Parameters:
base
- the iterator over the base sequence
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Method Details
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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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next
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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