Package net.sf.saxon.evpull
Class BlockEventIterator
- java.lang.Object
-
- net.sf.saxon.evpull.BlockEventIterator
-
- All Implemented Interfaces:
EventIterator
,PullEvent
public class BlockEventIterator extends java.lang.Object implements EventIterator
Iterate over the instructions in a Block, concatenating the result of each instruction into a single combined sequence.
-
-
Constructor Summary
Constructors Constructor Description BlockEventIterator(Expression[] children, XPathContext context)
Create an EventIterator over the results of evaluating a Block
-
Method Summary
All 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 iteratorsPullEvent
next()
Get the next item in the sequence.
-
-
-
Constructor Detail
-
BlockEventIterator
public BlockEventIterator(Expression[] children, XPathContext context)
Create an EventIterator over the results of evaluating a Block- Parameters:
children
- the sequence of instructions comprising the Blockcontext
- the XPath dynamic context
-
-
Method Detail
-
next
public PullEvent next() throws XPathException
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
-
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
-
-