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java.lang.Object net.sf.saxon.evpull.EventMappingIterator
public final class EventMappingIterator
MappingIterator merges a sequence of sequences into a single sequence.
It takes as inputs an iteration, and a mapping function to be
applied to each Item returned by that iteration. The mapping function itself
returns another iteration. The result is an iteration of iterators. To convert this
int a single flat iterator over a uniform sequence of events, the result must be wrapped
in an EventStackIterator
Constructor Summary | |
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EventMappingIterator(SequenceIterator base,
EventMappingFunction action)
Construct a MappingIterator that will apply a specified MappingFunction to each Item returned by the base iterator. |
Method Summary | |
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boolean |
isFlatSequence()
Determine whether the EventIterator returns a flat sequence of events, or whether it can return nested event iterators |
PullEvent |
next()
Get the next event in the sequence |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public EventMappingIterator(SequenceIterator base, EventMappingFunction action)
base
- the base iteratoraction
- the mapping function to be appliedMethod Detail |
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public PullEvent next() throws XPathException
EventIterator
next
in interface EventIterator
XPathException
- if a dynamic evaluation error occurspublic boolean isFlatSequence()
isFlatSequence
in interface EventIterator
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