me.gaigeshen.mybatis.helper

Class PageData<T>

java.lang.Object

me.gaigeshen.mybatis.helper.PageData<T>

Type Parameters:

T - The entity type

public final class PageData<T>
extends java.lang.Object

The page data

Author:

gaigeshen

Constructor Summary

Constructors

Constructor and Description
PageData(java.util.List<T> content, int page, int size, long total) Create page data

Method Summary

Modifier and Type	Method and Description
static <E> PageData<E>	create(int page, int size) Create empty page data
static <E> PageData<E>	create(java.util.List<E> content, int page, int size, long total) Create page data
java.util.List<T>	getContent() Returns data content
int	getPage() Returns page index
long	getPages() Returns total pages count
int	getSize() Returns page size
long	getTotal() Returns total count of data content
boolean	isEmpty() Returns true if the content is empty
boolean	isFirst()
boolean	isLast()
<S> PageData<S>	map(java.util.function.Function<T,S> fun) Use this method, translate objects to another type objects

Methods inherited from class java.lang.Object

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

Constructor Detail

PageData

public PageData(java.util.List<T> content,
                int page,
                int size,
                long total)

Create page data

Parameters:

content - Data content, if null then create empty list internal

page - Page index must be great than or equal 1

size - Page size must be great than or equal 1

total - Total count must be great than or equal 0

Method Detail

create

public static <E> PageData<E> create(int page,
                                     int size)

Create empty page data

Type Parameters:

E - The element class type of the content

Parameters:

page - Page index must be great than or equal 1

size - Page size must be great than or equal 1

Returns:

The page data

create

public static <E> PageData<E> create(java.util.List<E> content,
                                     int page,
                                     int size,
                                     long total)

Create page data

Type Parameters:

E - The element class type of the content

Parameters:

content - Data content, if null then create empty list internal

page - Page index must be great than or equal 1

size - Page size must be great than or equal 1

total - Total count must be great than or equal 0

Returns:

The page data

map

public <S> PageData<S> map(java.util.function.Function<T,S> fun)

Use this method, translate objects to another type objects

Type Parameters:

S - Target object class

Parameters:

fun - Translator function

Returns:

New page data translated

isEmpty

public boolean isEmpty()

Returns true if the content is empty

Returns:

True if the content is empty

getContent

public java.util.List<T> getContent()

Returns data content

Returns:

The data content

getPage

public int getPage()

Returns page index

Returns:

The page index

getSize

public int getSize()

Returns page size

Returns:

The page size

getPages

public long getPages()

Returns total pages count

Returns:

The pages count

getTotal

public long getTotal()

Returns total count of data content

Returns:

The total count

isFirst

public boolean isFirst()

Returns:

If this page data is first page, then returns true

isLast

public boolean isLast()

Returns:

If this page data is last page, then returns true