Class IncrementalIterator

java.lang.Object

net.sf.saxon.tree.iter.IncrementalIterator

All Implemented Interfaces:

Closeable, AutoCloseable, SequenceIterator, AxisIterator

public class IncrementalIterator
extends Object
implements AxisIterator

This class implements an AxisIterator by providing a start item, and a function that selects the next item as a function of the previous item.

Constructor Summary

Constructors

Constructor	Description
IncrementalIterator(NodeInfo start, Function<NodeInfo,NodeInfo> stepper)	Create an IncrementalIterator

Method Summary

Modifier and Type	Method	Description
NodeInfo	next()	Get the next item in the sequence

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface SequenceIterator

close

Constructor Details

IncrementalIterator

public IncrementalIterator(NodeInfo start,
 Function<NodeInfo,NodeInfo> stepper)

Create an IncrementalIterator

Parameters:

start - the first item to be returned by the iterator

stepper - a function that computes the next item, given the current item, or returns null at the end of the sequence.

Method Details

next

public NodeInfo next()

Get the next item in the sequence

Specified by:

next in interface AxisIterator

Specified by:

next in interface SequenceIterator

Returns:

the next item, or null if there are no more items to be returned.