net.sf.saxon.tree.iter

Class ListIterator

java.lang.Object

net.sf.saxon.tree.iter.ListIterator

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, LastPositionFinder, SequenceIterator, GroundedIterator, LookaheadIterator, ReversibleIterator

Direct Known Subclasses:

ListIterator.Of

public abstract class ListIterator
extends java.lang.Object
implements SequenceIterator, LastPositionFinder, LookaheadIterator, GroundedIterator, ReversibleIterator

Class ListIterator, iterates over a sequence of items held in a Java List.

Note: There are three subclasses: ListIterator, which takes a general list of items, NodeListIterator, which takes a list of nodes, and AtomicListIterator, which takes a list of atomic values. It might seem simpler to implement this entirely using generics, but that design proves very difficult to translate to C#, where generics behave very differently. With this approach the generics are confined to this abstract class.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ListIterator.Of<T extends Item>
static class	ListIterator.OfAtomic<A extends AtomicValue> ListIterator.OfAtomic is a subclass of ListIterator where the list always contains atomic values; it therefore implements the AtomicIterator interface.

Constructor Summary

Constructors

Constructor and Description
ListIterator()

Method Summary

Modifier and Type	Method and Description
boolean	supportsHasNext() Ask whether the hasNext() method can be called.

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.expr.LastPositionFinder

getLength, supportsGetLength

Methods inherited from interface net.sf.saxon.tree.iter.LookaheadIterator

hasNext

Methods inherited from interface net.sf.saxon.tree.iter.GroundedIterator

getResidue, isActuallyGrounded, materialize

Methods inherited from interface net.sf.saxon.tree.iter.ReversibleIterator

getReverseIterator

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

close, discharge, next

Constructor Detail

ListIterator

public ListIterator()

Method Detail

supportsHasNext

public boolean supportsHasNext()

Description copied from interface: LookaheadIterator

Ask whether the hasNext() method can be called. This method must be called before calling hasNext(), because some iterators implement this interface, but only support look-ahead under particular circumstances (this is usually because they delegate to another iterator)

Specified by:

supportsHasNext in interface LookaheadIterator

Returns:

true if the LookaheadIterator.hasNext() method is available