PaginatedList (AWS Java SDK for Amazon DynamoDB 1.11.105 API)

java.lang.Object
- com.amazonaws.services.dynamodbv2.datamodeling.PaginatedList<T>

Type Parameters:

T - The domain object type stored in this list.

All Implemented Interfaces:

Iterable<T>, Collection<T>, List<T>

Direct Known Subclasses:

PaginatedParallelScanList, PaginatedQueryList, PaginatedScanList
```
public abstract class PaginatedList<T>
extends Object
implements List<T>
```
Unmodifiable list supporting paginated result sets from Amazon DynamoDB.
Pages of results are fetched lazily from DynamoDB as they are needed. Some methods, such as size() and toArray(), require fetching the entire result set eagerly. See the javadoc of individual methods for details on which are lazy.

Field Summary

Fields
Modifier and Type	Field and Description
`protected List<T>`	`allResults` All currently loaded results for this list.
`protected boolean`	`allResultsLoaded` Tracks if all results have been loaded yet or not
`protected Class<T>`	`clazz` The class annotated with DynamoDB tags declaring how to load/store objects into DynamoDB
`protected AmazonDynamoDB`	`dynamo` The client for working with DynamoDB
`protected DynamoDBMapper`	`mapper` Reference to the DynamoDB mapper for marshalling DynamoDB attributes back into objects
`protected List<T>`	`nextResults` Lazily loaded next results waiting to be added into allResults

Constructor Summary

Constructors
Constructor and Description
`PaginatedList(DynamoDBMapper mapper, Class<T> clazz, AmazonDynamoDB dynamo)` Constructs a PaginatedList instance using the default PaginationLoadingStrategy
`PaginatedList(DynamoDBMapper mapper, Class<T> clazz, AmazonDynamoDB dynamo, DynamoDBMapperConfig.PaginationLoadingStrategy paginationLoadingStrategy)` Constructs a PaginatedList instance.

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`add(int arg0, T arg1)`
`boolean`	`add(T arg0)`
`boolean`	`addAll(Collection<? extends T> arg0)`
`boolean`	`addAll(int arg0, Collection<? extends T> arg1)`
`protected abstract boolean`	`atEndOfResults()` Returns whether we have reached the end of the result set.
`void`	`clear()`
`boolean`	`contains(Object arg0)` Returns whether the collection contains the given element.
`boolean`	`containsAll(Collection<?> arg0)`
`protected abstract List<T>`	`fetchNextPage()` Fetches the next page of results (which may be empty) and returns any items found.
`T`	`get(int n)` Returns the Nth element of the list.
`int`	`indexOf(Object arg0)` Returns the first index of the object given in the list.
`boolean`	`isEmpty()` Returns whether the collection is empty.
`Iterator<T>`	`iterator()` Returns an iterator over this list that lazily initializes results as necessary.
`int`	`lastIndexOf(Object arg0)`
`ListIterator<T>`	`listIterator()`
`ListIterator<T>`	`listIterator(int arg0)`
`void`	`loadAllResults()` Eagerly loads all results for this list.
`T`	`remove(int arg0)`
`boolean`	`remove(Object arg0)`
`boolean`	`removeAll(Collection<?> arg0)`
`boolean`	`retainAll(Collection<?> arg0)`
`T`	`set(int arg0, T arg1)`
`int`	`size()`
`List<T>`	`subList(int arg0, int arg1)` Returns a sub-list in the range specified, loading more results as necessary.
`Object[]`	`toArray()`
`<X> X[]`	`toArray(X[] a)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.List
equals, hashCode, replaceAll, sort, spliterator

Methods inherited from interface java.util.Collection
parallelStream, removeIf, stream

Methods inherited from interface java.lang.Iterable
forEach

- Field Detail
  - mapper
```
protected final DynamoDBMapper mapper
```
    Reference to the DynamoDB mapper for marshalling DynamoDB attributes back into objects
  - clazz
```
protected final Class<T> clazz
```
    The class annotated with DynamoDB tags declaring how to load/store objects into DynamoDB
  - dynamo
```
protected final AmazonDynamoDB dynamo
```
    The client for working with DynamoDB
  - allResultsLoaded
```
protected boolean allResultsLoaded
```
    Tracks if all results have been loaded yet or not
  - allResults
```
protected final List<T> allResults
```
    All currently loaded results for this list. In ITERATION_ONLY mode, this list will at most keep one page of the loaded results, and all previous results will be cleared from the memory.
  - nextResults
```
protected final List<T> nextResults
```
    Lazily loaded next results waiting to be added into allResults
- Constructor Detail
  - PaginatedList
```
public PaginatedList(DynamoDBMapper mapper,
                     Class<T> clazz,
                     AmazonDynamoDB dynamo)
```
    Constructs a PaginatedList instance using the default PaginationLoadingStrategy
  - PaginatedList
```
public PaginatedList(DynamoDBMapper mapper,
                     Class<T> clazz,
                     AmazonDynamoDB dynamo,
                     DynamoDBMapperConfig.PaginationLoadingStrategy paginationLoadingStrategy)
```
    Constructs a PaginatedList instance.
    
    Parameters:
    
    mapper - The mapper for marshalling DynamoDB attributes into objects.
    
    clazz - The class of the annotated model.
    
    dynamo - The DynamoDB client for making low-level request calls.
    
    paginationLoadingStrategy - The strategy used for loading paginated results. Caller has to explicitly set this parameter, since the DynamoDBMapperConfig set in the mapper is not accessible here. If null value is provided, LAZY_LOADING will be set by default.
- Method Detail
  - loadAllResults
```
public void loadAllResults()
```
    Eagerly loads all results for this list.
    Not supported in ITERATION_ONLY mode.
  - fetchNextPage
```
protected abstract List<T> fetchNextPage()
```
    Fetches the next page of results (which may be empty) and returns any items found.
  - atEndOfResults
```
protected abstract boolean atEndOfResults()
```
    Returns whether we have reached the end of the result set.
  - iterator
```
public Iterator<T> iterator()
```
    Returns an iterator over this list that lazily initializes results as necessary.
    If it configured with ITERARTION_ONLY mode, then the iterator could be only retrieved once, and any previously loaded results will be cleared in the memory during the iteration.
    
    Specified by:
    
    iterator in interface Iterable<T>
    
    Specified by:
    
    iterator in interface Collection<T>
    
    Specified by:
    
    iterator in interface List<T>
  - isEmpty
```
public boolean isEmpty()
```
    Returns whether the collection is empty. At most one (non-empty) page of results is loaded to make the check.
    Not supported in ITERATION_ONLY mode.
    
    Specified by:
    
    isEmpty in interface Collection<T>
    
    Specified by:
    
    isEmpty in interface List<T>
  - get
```
public T get(int n)
```
    Returns the Nth element of the list. Results are loaded until N elements are present, if necessary.
    Not supported in ITERATION_ONLY mode.
    
    Specified by:
    
    get in interface List<T>
  - contains
```
public boolean contains(Object arg0)
```
    Returns whether the collection contains the given element. Results are loaded and checked incrementally until a match is found or the end of the result set is reached.
    Not supported in ITERATION_ONLY mode.
    
    Specified by:
    
    contains in interface Collection<T>
    
    Specified by:
    
    contains in interface List<T>
  - subList
```
public List<T> subList(int arg0,
                       int arg1)
```
    Returns a sub-list in the range specified, loading more results as necessary.
    Not supported in ITERATION_ONLY mode.
    
    Specified by:
    
    subList in interface List<T>
  - indexOf
```
public int indexOf(Object arg0)
```
    Returns the first index of the object given in the list. Additional results are loaded incrementally as necessary.
    Not supported in ITERATION_ONLY mode.
    
    Specified by:
    
    indexOf in interface List<T>
  - size
```
public int size()
```
    Specified by:
    
    size in interface Collection<T>
    
    Specified by:
    
    size in interface List<T>
  - containsAll
```
public boolean containsAll(Collection<?> arg0)
```
    Specified by:
    
    containsAll in interface Collection<T>
    
    Specified by:
    
    containsAll in interface List<T>
  - lastIndexOf
```
public int lastIndexOf(Object arg0)
```
    Specified by:
    
    lastIndexOf in interface List<T>
  - toArray
```
public Object[] toArray()
```
    Specified by:
    
    toArray in interface Collection<T>
    
    Specified by:
    
    toArray in interface List<T>
  - toArray
```
public <X> X[] toArray(X[] a)
```
    Specified by:
    
    toArray in interface Collection<T>
    
    Specified by:
    
    toArray in interface List<T>
  - listIterator
```
public ListIterator<T> listIterator()
```
    Specified by:
    
    listIterator in interface List<T>
  - listIterator
```
public ListIterator<T> listIterator(int arg0)
```
    Specified by:
    
    listIterator in interface List<T>
  - remove
```
public boolean remove(Object arg0)
```
    Specified by:
    
    remove in interface Collection<T>
    
    Specified by:
    
    remove in interface List<T>
  - remove
```
public T remove(int arg0)
```
    Specified by:
    
    remove in interface List<T>
  - removeAll
```
public boolean removeAll(Collection<?> arg0)
```
    Specified by:
    
    removeAll in interface Collection<T>
    
    Specified by:
    
    removeAll in interface List<T>
  - retainAll
```
public boolean retainAll(Collection<?> arg0)
```
    Specified by:
    
    retainAll in interface Collection<T>
    
    Specified by:
    
    retainAll in interface List<T>
  - set
```
public T set(int arg0,
             T arg1)
```
    Specified by:
    
    set in interface List<T>
  - add
```
public boolean add(T arg0)
```
    Specified by:
    
    add in interface Collection<T>
    
    Specified by:
    
    add in interface List<T>
  - add
```
public void add(int arg0,
                T arg1)
```
    Specified by:
    
    add in interface List<T>
  - addAll
```
public boolean addAll(Collection<? extends T> arg0)
```
    Specified by:
    
    addAll in interface Collection<T>
    
    Specified by:
    
    addAll in interface List<T>
  - addAll
```
public boolean addAll(int arg0,
                      Collection<? extends T> arg1)
```
    Specified by:
    
    addAll in interface List<T>
  - clear
```
public void clear()
```
    Specified by:
    
    clear in interface Collection<T>
    
    Specified by:
    
    clear in interface List<T>

Class PaginatedList<T>

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface java.util.List

Methods inherited from interface java.util.Collection

Methods inherited from interface java.lang.Iterable

Field Detail

mapper

clazz

dynamo

allResultsLoaded

allResults

nextResults

Constructor Detail

PaginatedList

PaginatedList

Method Detail

loadAllResults

fetchNextPage

atEndOfResults

iterator

isEmpty

get

contains

subList

indexOf

size

containsAll

lastIndexOf

toArray

toArray

listIterator

listIterator

remove

remove

removeAll

retainAll

set

add

add

addAll

addAll

clear