Package net.sf.saxon.evpull
Class BlockEventIterator
java.lang.Object
net.sf.saxon.evpull.BlockEventIterator
- All Implemented Interfaces:
EventIterator
,PullEvent
Iterate over the instructions in a Block, concatenating the result of each instruction
into a single combined sequence.
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Constructor Summary
ConstructorsConstructorDescriptionBlockEventIterator
(Expression[] children, XPathContext context) Create an EventIterator over the results of evaluating a Block -
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 item in the sequence.
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Constructor Details
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BlockEventIterator
Create an EventIterator over the results of evaluating a Block- Parameters:
children
- the sequence of instructions comprising the Blockcontext
- the XPath dynamic context
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Method Details
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next
Get the next item in the sequence.- Specified by:
next
in interfaceEventIterator
- Returns:
- the next item, or null if there are no more items.
- Throws:
XPathException
- if an error occurs retrieving the next item
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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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