org.apache.jdo.impl.fostore
Class FOStoreExtent.FOStoreExtentIterator

java.lang.Object
  org.apache.jdo.impl.fostore.FOStoreExtent.FOStoreExtentIterator

All Implemented Interfaces:

java.util.Iterator

Enclosing class:

FOStoreExtent

class FOStoreExtent.FOStoreExtentIterator

extends java.lang.Object

implements java.util.Iterator

Iterates over the elements in a FOStoreExtent.

Field Summary

private boolean	closed If false, then can get next object, otherwise next() always throws NoSuchElementException and hasNext() always returns false.
private int	index Index into extent as a whole.
private int	instanceIndex Index into instances.
private java.util.ArrayList	instances Instances that have been retrieved from store.
private int	maxInstances
private java.lang.Object	nextObject
private java.util.ArrayList	oids
private int	oidsIndex Index into oids.
private int	size Size of extent (number of instances + number of oids).

Constructor Summary

(package private)

FOStoreExtent.FOStoreExtentIterator(FOStoreExtent extent)

Method Summary

(package private) void	close() Disallow getting further objects from this iterator.
private void	getNext() Get the next instance.
boolean	hasNext()
java.lang.Object	next()
void	remove() Always throws UnsupportedOperationException.

Methods inherited from class java.lang.Object

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

Field Detail

instances

private java.util.ArrayList instances

Instances that have been retrieved from store.

oids

private java.util.ArrayList oids

maxInstances

private int maxInstances

instanceIndex

private int instanceIndex

Index into instances.

oidsIndex

private int oidsIndex

Index into oids.

index

private int index

Index into extent as a whole.

size

private final int size

Size of extent (number of instances + number of oids).

closed

private boolean closed

If false, then can get next object, otherwise next() always throws NoSuchElementException and hasNext() always returns false.

nextObject

private java.lang.Object nextObject

Constructor Detail

FOStoreExtent.FOStoreExtentIterator

FOStoreExtent.FOStoreExtentIterator(FOStoreExtent extent)

Method Detail

hasNext

public boolean hasNext()

Specified by:

hasNext in interface java.util.Iterator

See Also:

Iterator.hasNext()

next

public java.lang.Object next()

Specified by:

next in interface java.util.Iterator

See Also:

Iterator.next()

getNext

private void getNext()

Get the next instance. Close the iterator if there are no more instances available.

remove

public void remove()

Always throws UnsupportedOperationException.

Specified by:

remove in interface java.util.Iterator

close

void close()

Disallow getting further objects from this iterator.