com.amazonaws.services.dynamodbv2.document

Class Page<T,R>

java.lang.Object

com.amazonaws.services.dynamodbv2.document.Page<T,R>

Type Parameters:

T - item type

R - low level result type

All Implemented Interfaces:

Iterable<T>

public abstract class Page<T,R>
extends Object
implements Iterable<T>

A page contains a list of items; accessing methods on the list are guaranteed to be purely in-memory operations that will not block or throw exceptions because of transient network issues. A page also knows whether it has a "next page", and if so knows how to retrieve it (which will almost certainly involve a remote network call that may block or fail).

Constructor Summary

Constructors

Constructor and Description
Page(List<T> content, R lowLevelResult)

Method Summary

Modifier and Type	Method and Description
R	getLowLevelResult()
abstract boolean	hasNextPage() Checks whether this page has a "next page." If this method returns true, the next page can be retrieved by calling next.
Iterator<T>	iterator()
abstract Page<T,R>	nextPage() Retrieves the next page.
int	size()
String	toString()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

Page

public Page(List<T> content,
            R lowLevelResult)

Parameters:

content - an unmodifiable list of content

lowLevelResult - the low level (response) result from AWSS

Method Detail

hasNextPage

public abstract boolean hasNextPage()

Checks whether this page has a "next page." If this method returns true, the next page can be retrieved by calling next. If it returns false, any call to next will be guaranteed to throw an IllegalStateException.

Returns:

true if there is next page; false otherwise

nextPage

public abstract Page<T,R> nextPage()

Retrieves the next page.

Returns:

the next page

Throws:

NoSuchElementException - if there is no next page

AmazonServiceException - on error making the remote call

size

public final int size()

iterator

public final Iterator<T> iterator()

Specified by:

iterator in interface Iterable<T>

toString

public String toString()

Overrides:

toString in class Object

getLowLevelResult

public final R getLowLevelResult()