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 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface net.sf.saxon.om.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.