- All Implemented Interfaces:
- Direct Known Subclasses:
public abstract class ArrayIterator extends java.lang.Object implements SequenceIterator, LastPositionFinder, LookaheadIterator, GroundedIterator, ReversibleIteratorArrayIterator is used to enumerate items held in an array. The items are always held in the correct sorted order for the sequence. The challenge here is getting the generics right, especially in a way that works for C#, which is less tolerant of generic abuse. The solution is to have a non-generic
ArrayIterator.Of<T extends Item>as a subclass. A further subtlety is that we need an ArrayIterator of nodes to implement
AxisIterator, so we have another subclass
ArrayIterator.OfNodes<N extends NodeInfo>for that purpose.
Nested Class Summary
Nested Classes Modifier and Type Class Description
ArrayIterator.Of<T extends Item>Parameterised subclass to accept items of a particular item type
ArrayIterator.OfNodes<N extends NodeInfo>ArrayIterator.OfNodes is a subclass of ArrayIterator where the array always contains Nodes; it therefore implements the AxisIterator interface.
Constructors Constructor Description
All Methods Instance Methods Abstract Methods Concrete Methods Modifier and Type Method Description
isActuallyGrounded()Ask if the iterator is actually grounded.
makeSliceIterator(int min, int max)Create a new ArrayIterator over the same items, with a different start point and end point
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
public abstract SequenceIterator makeSliceIterator(int min, int max)Create a new ArrayIterator over the same items, with a different start point and end point
min- the start position (1-based) of the new ArrayIterator relative to the original
max- the end position (1-based) of the last item to be delivered by the new ArrayIterator, relative to the original. For example, min=2, max=3 delivers the two items ($base, $base). Set this to Integer.MAX_VALUE if there is no end limit.
- an iterator over the items between the min and max positions
public boolean isActuallyGrounded()Description copied from interface:
GroundedIteratorAsk if the iterator is actually grounded. This method must be called before calling
GroundedIterator.getResidue(), because the iterator might be grounded under some conditions and not others (usually when it delegates to another iterator)
public boolean supportsHasNext()Description copied from interface:
LookaheadIteratorAsk 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)