com.atlassian.jira.util

Class Pages

java.lang.Object

com.atlassian.jira.util.Pages

@PublicApi
public class Pages
extends Object

Class containing static factory methods used to create Page instances.

Since:

6.4.7

Constructor Summary

Constructors

Constructor and Description
Pages()

Method Summary

Modifier and Type	Method and Description
static <T> Page<T>	page(Iterable<T> values, long totalCount, PageRequest pageRequest) Creates a page given a list of values consisting the page, a total count of all values and a page request
static <T> Page<T>	toPage(Iterable<T> allValues, PageRequest pageRequest) Given all values and a page request creates a page that conforms to the request.
static <T,R> Page<R>	toPage(Iterable<T> values, PageRequest pageRequest, java.util.function.Predicate<T> filter, java.util.function.Function<T,R> transform) Creates a page from values and a PageRequest.

Methods inherited from class java.lang.Object

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

Constructor Detail

Pages

public Pages()

Method Detail

page

public static <T> Page<T> page(Iterable<T> values,
                               long totalCount,
                               PageRequest pageRequest)

Creates a page given a list of values consisting the page, a total count of all values and a page request

Type Parameters:

T - type of entities in the list

Parameters:

values - values that appear on the page

totalCount - total count of all values

pageRequest - a page request used to create this page

Returns:

the requested page

Throws:

IllegalArgumentException - if arguments are inconsistent

toPage

public static <T> Page<T> toPage(Iterable<T> allValues,
                                 PageRequest pageRequest)

Given all values and a page request creates a page that conforms to the request.

Type Parameters:

T - type of entities in the list

Parameters:

allValues - all not paged values

pageRequest - page request

Returns:

a requested page

toPage

public static <T,R> Page<R> toPage(Iterable<T> values,
                                   PageRequest pageRequest,
                                   java.util.function.Predicate<T> filter,
                                   java.util.function.Function<T,R> transform)

Creates a page from values and a PageRequest. This method will fill information about the the total number of values, start and size of the returned page.

Type Parameters:

T - the type of values from which page is created

R - the type of the page

Parameters:

values - unfiltered and not-transformed values from which the page is created

pageRequest - request for the page

filter - predicate used to filter values

transform - function which transforms the values from T to R

Returns:

the page with filtered and transformed values