org.springframework.data.domain

Class PageImpl<T>

java.lang.Object

org.springframework.data.domain.PageImpl<T>

Type Parameters:

T - the type of which the page consists.

All Implemented Interfaces:

Serializable, Iterable<T>, Page<T>, Slice<T>, Streamable<T>

Direct Known Subclasses:

GeoPage

public class PageImpl<T>
extends Object
implements Page<T>

Basic Page implementation.

Author:

Oliver Gierke

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
PageImpl(List<T> content) Creates a new PageImpl with the given content.
PageImpl(List<T> content, Pageable pageable, long total) Constructor of PageImpl.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object obj)
List<T>	getContent() Returns the page content as List.
protected <U> List<U>	getConvertedContent(Function<? super T,? extends U> converter) Applies the given Converter to the content of the Chunk.
int	getNumber() Returns the number of the current Slice.
int	getNumberOfElements() Returns the number of elements currently on this Slice.
int	getSize() Returns the size of the Slice.
Sort	getSort() Returns the sorting parameters for the Slice.
long	getTotalElements() Returns the total amount of elements.
int	getTotalPages() Returns the number of total pages.
boolean	hasContent() Returns whether the Slice has content at all.
int	hashCode()
boolean	hasNext() Returns if there is a next Slice.
boolean	hasPrevious() Returns if there is a previous Slice.
boolean	isFirst() Returns whether the current Slice is the first one.
boolean	isLast() Returns whether the current Slice is the last one.
Iterator<T>	iterator()
<U> Page<U>	map(Function<? super T,? extends U> converter) Returns a new Page with the content of the current one mapped by the given Converter.
Pageable	nextPageable() Returns the Pageable to request the next Slice.
Pageable	previousPageable() Returns the Pageable to request the previous Slice.
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.springframework.data.domain.Slice

getContent, getNumber, getNumberOfElements, getSize, getSort, hasContent, hasPrevious, isFirst, nextPageable, previousPageable

Methods inherited from interface org.springframework.data.util.Streamable

empty, filter, flatMap, of, of, of, stream

Methods inherited from interface java.lang.Iterable

forEach, iterator, spliterator

Constructor Detail

PageImpl

public PageImpl(List<T> content,
                Pageable pageable,
                long total)

Constructor of PageImpl.

Parameters:

content - the content of this page, must not be null.

pageable - the paging information, can be null.

total - the total amount of items available. The total might be adapted considering the length of the content given, if it is going to be the content of the last page. This is in place to mitigate inconsistencies

PageImpl

public PageImpl(List<T> content)

Creates a new PageImpl with the given content. This will result in the created Page being identical to the entire List.

Parameters:

content - must not be null.

Method Detail

getTotalPages

public int getTotalPages()

Description copied from interface: Page

Returns the number of total pages.

Specified by:

getTotalPages in interface Page<T>

Returns:

the number of total pages

getTotalElements

public long getTotalElements()

Description copied from interface: Page

Returns the total amount of elements.

Specified by:

getTotalElements in interface Page<T>

Returns:

the total amount of elements

hasNext

public boolean hasNext()

Description copied from interface: Slice

Returns if there is a next Slice.

Specified by:

hasNext in interface Slice<T>

Returns:

if there is a next Slice.

isLast

public boolean isLast()

Description copied from interface: Slice

Returns whether the current Slice is the last one.

Specified by:

isLast in interface Slice<T>

Returns:

map

public <U> Page<U> map(Function<? super T,? extends U> converter)

Description copied from interface: Page

Returns a new Page with the content of the current one mapped by the given Converter.

Specified by:

map in interface Page<T>

Specified by:

map in interface Slice<T>

Specified by:

map in interface Streamable<T>

Parameters:

converter - must not be null.

Returns:

a new Page with the content of the current one mapped by the given Converter.

See Also:

Stream.map(Function)

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object obj)

hashCode

public int hashCode()

getNumber

public int getNumber()

Description copied from interface: Slice

Returns the number of the current Slice. Is always non-negative.

Specified by:

getNumber in interface Slice<T>

Returns:

the number of the current Slice.

getSize

public int getSize()

Description copied from interface: Slice

Returns the size of the Slice.

Specified by:

getSize in interface Slice<T>

Returns:

the size of the Slice.

getNumberOfElements

public int getNumberOfElements()

Description copied from interface: Slice

Returns the number of elements currently on this Slice.

Specified by:

getNumberOfElements in interface Slice<T>

Returns:

the number of elements currently on this Slice.

hasPrevious

public boolean hasPrevious()

Description copied from interface: Slice

Returns if there is a previous Slice.

Specified by:

hasPrevious in interface Slice<T>

Returns:

if there is a previous Slice.

isFirst

public boolean isFirst()

Description copied from interface: Slice

Returns whether the current Slice is the first one.

Specified by:

isFirst in interface Slice<T>

Returns:

nextPageable

public Pageable nextPageable()

Description copied from interface: Slice

Returns the Pageable to request the next Slice. Can be null in case the current Slice is already the last one. Clients should check Slice.hasNext() before calling this method to make sure they receive a non-null value.

Specified by:

nextPageable in interface Slice<T>

Returns:

previousPageable

public Pageable previousPageable()

Description copied from interface: Slice

Returns the Pageable to request the previous Slice. Can be null in case the current Slice is already the first one. Clients should check Slice.hasPrevious() before calling this method make sure receive a non-null value.

Specified by:

previousPageable in interface Slice<T>

Returns:

hasContent

public boolean hasContent()

Description copied from interface: Slice

Returns whether the Slice has content at all.

Specified by:

hasContent in interface Slice<T>

Returns:

getContent

public List<T> getContent()

Description copied from interface: Slice

Returns the page content as List.

Specified by:

getContent in interface Slice<T>

Returns:

getSort

public Sort getSort()

Description copied from interface: Slice

Returns the sorting parameters for the Slice.

Specified by:

getSort in interface Slice<T>

Returns:

iterator

public Iterator<T> iterator()

Specified by:

iterator in interface Iterable<T>

getConvertedContent

protected <U> List<U> getConvertedContent(Function<? super T,? extends U> converter)

Applies the given Converter to the content of the Chunk.

Parameters:

converter - must not be null.

Returns: