Package com.bellotapps.webapps_commons.persistence.repository_utils

Interface Slice<T>

Type Parameters:

T - The type of content in this slice.

All Known Subinterfaces:

Page<T>

All Known Implementing Classes:

AbstractSlice, PageImpl, SliceImpl

public interface Slice<T>

A slice of data.

Method Summary

Modifier and Type	Method	Description
java.util.List<T>	content()
static <S> Slice<S>	empty()	Creates an empty Slice.
static <S> Slice<S>	empty(int number, int size, SortingData sortingData, boolean hasNext)	Creates an empty Slice, using the given paging and sorting information.
static <S> Slice<S>	emptyUnsorted(int number, int size, boolean hasNext)	Creates an empty unsorted Slice, using the given paging information.
PagingRequest	firstRequest()
boolean	hasContent()	Indicates whether there are elements in this slice.
boolean	hasNext()	Indicates whether this is the last slice.
boolean	hasPrevious()	Indicates whether there is a previous slice.
boolean	isFirst()	Indicates whether this is the first slice.
boolean	isLast()	Indicates whether this is the last slice.
<U> Slice<U>	map(java.util.function.Function<T,U> mapper)	Maps the content of this slice according to the given mapper.
java.util.Optional<PagingRequest>	nextRequest()
int	number()
int	numberOfElements()
static <S> Slice<S>	of(int number, int size, SortingData sortingData, java.util.List<S> content, boolean hasNext)	Creates a Slice.
long	offset()
static <S> Slice<S>	ofUnsorted(int number, int size, java.util.List<S> content, boolean hasNext)	Creates an unsorted Slice.
java.util.Optional<PagingRequest>	previousRequest()
PagingRequest	requestedBy()
int	size()
SortingData	sortingData()

Method Detail

number

int number()

Returns:

Number of slice.

size

int size()

Returns:

Slice size.

sortingData

SortingData sortingData()

Returns:

SortingData that was used to sort contents of this slice.

numberOfElements

int numberOfElements()

Returns:

Amount of elements in the slice (can be less than the slice size if it is the last one).

offset

long offset()

Returns:

The offset to be taken according to the underlying Slice number and size.

content

java.util.List<T> content()

Returns:

Content in this slice.

hasContent

boolean hasContent()

Indicates whether there are elements in this slice.

Returns:

true if there are elements, or false otherwise.

map

<U> Slice<U> map(java.util.function.Function<T,U> mapper)

Maps the content of this slice according to the given mapper.

Type Parameters:

U - Concrete type of the resulting contents.

Parameters:

mapper - A Function that maps the contents of this slice.

Returns:

A new slice containing the mapped elements.

requestedBy

PagingRequest requestedBy()

Returns:

A PagingRequest from which this slice can be requested.

isFirst

boolean isFirst()

Indicates whether this is the first slice.

Returns:

true if it is the first slice, or false otherwise.

firstRequest

PagingRequest firstRequest()

Returns:

A PagingRequest from which the first slice can be requested.

hasPrevious

boolean hasPrevious()

Indicates whether there is a previous slice.

Returns:

true if there is a previous slice, or false otherwise.

previousRequest

java.util.Optional<PagingRequest> previousRequest()

Returns:

An Optional of PagingRequest from which the previous slice can be requested, if there is such, or empty otherwise.

hasNext

boolean hasNext()

Indicates whether this is the last slice.

Returns:

true if it is the last slice, or false otherwise.

nextRequest

java.util.Optional<PagingRequest> nextRequest()

Returns:

An Optional of PagingRequest from which the next slice can be requested, if there is such, or empty otherwise.

isLast

boolean isLast()

Indicates whether this is the last slice.

Returns:

true if it is the last slice, or false otherwise.

empty

static <S> Slice<S> empty()

Creates an empty Slice.

Type Parameters:

S - The type of elements in the slice.

Returns:

An empty Slice.

emptyUnsorted

static <S> Slice<S> emptyUnsorted(int number,
                                  int size,
                                  boolean hasNext)

Creates an empty unsorted Slice, using the given paging information.

Type Parameters:

S - The type of elements in the slice.

Parameters:

number - The number of the slice.

size - The size of the slice.

hasNext - A flag indicating whether there is another slice.

Returns:

An unsorted empty Slice.

empty

static <S> Slice<S> empty(int number,
                          int size,
                          SortingData sortingData,
                          boolean hasNext)

Creates an empty Slice, using the given paging and sorting information.

Type Parameters:

S - The type of elements in the slice.

Parameters:

number - The number of the slice.

size - The size of the slice.

sortingData - The SortingData that was used to sort contents of this slice.

hasNext - A flag indicating whether there is another slice.

Returns:

An empty Slice.

ofUnsorted

static <S> Slice<S> ofUnsorted(int number,
                               int size,
                               java.util.List<S> content,
                               boolean hasNext)

Creates an unsorted Slice.

Type Parameters:

S - The type of elements in the slice.

Parameters:

number - The number of the slice.

size - The size of the slice.

content - The elements in the slice.

hasNext - A flag indicating whether there is another slice.

Returns:

An unsorted Slice.

of

static <S> Slice<S> of(int number,
                       int size,
                       SortingData sortingData,
                       java.util.List<S> content,
                       boolean hasNext)

Creates a Slice.

Type Parameters:

S - The type of elements in the slice.

Parameters:

number - The number of the slice.

size - The size of the slice.

sortingData - The SortingData that was used to sort contents of this slice.

content - The elements in the slice.

hasNext - A flag indicating whether there is another slice.

Returns:

A Slice.