org.nuiton.topia.persistence.util

Class PagerBeanUtil

java.lang.Object

org.nuiton.topia.persistence.util.PagerBeanUtil

public class PagerBeanUtil
extends Object

Useful method around PagerBean. Copied from nuiton-utils-3.0, removed since then.

Constructor Summary

Constructors

Constructor and Description
PagerBeanUtil()

Method Summary

Modifier and Type	Method and Description
static void	computeRecordIndexesAndPagesNumber(PagerBean bean) Given a pagerBean, compute his PagerBean.recordStartIndex, PagerBean.recordEndIndex and PagerBean.pagesNumber.
static <E> List<E>	getPage(List<E> elements, int page, int pageSize) Get the elements of the lists using the pager datas: elements:all elements of the pager pageSize: number of elements in a page page: the requested page number starting at 1
static org.apache.commons.lang3.tuple.Pair<Long,Long>	getPageBound(long totalCount, int page, int pageSize) Compute the pager bound given his datas: totalCount: count of all elements of the pager pageSize: number of elements in a page page: the requested page number starting at 1
static long	getTotalPage(long totalCount, int pageSize) Given a total count of elements and a page size, compute the number of pages available.
static PagerBean	newPagerBean()

Methods inherited from class java.lang.Object

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

Constructor Detail

PagerBeanUtil

public PagerBeanUtil()

Method Detail

getTotalPage

public static long getTotalPage(long totalCount,
                                int pageSize)

Given a total count of elements and a page size, compute the number of pages available.

Parameters:

totalCount - total count of elements in the pager

pageSize - size of a page

Returns:

the number of available pages

getPageBound

public static org.apache.commons.lang3.tuple.Pair<Long,Long> getPageBound(long totalCount,
                                                                          int page,
                                                                          int pageSize)

Compute the pager bound given his datas:

• totalCount: count of all elements of the pager
• pageSize: number of elements in a page
• page: the requested page number starting at 1

Parameters:

totalCount - total count of elements in the pager

page - pager page number (starting at 1)

pageSize - number of elements in a page

Returns:

the bound of start and end index of the requested elements of the pager

getPage

public static <E> List<E> getPage(List<E> elements,
                                  int page,
                                  int pageSize)

Get the elements of the lists using the pager datas:

• elements:all elements of the pager
• pageSize: number of elements in a page
• page: the requested page number starting at 1

Type Parameters:

E - n'importe quel type

Parameters:

elements - all pager elements

page - pager page number (starting at 1)

pageSize - number of elements in a page

Returns:

la liste une fois filtrée

computeRecordIndexesAndPagesNumber

public static void computeRecordIndexesAndPagesNumber(PagerBean bean)

Given a pagerBean, compute his PagerBean.recordStartIndex, PagerBean.recordEndIndex and PagerBean.pagesNumber.

Parameters:

bean - the pagerBean to fill

Since:

2.4.3

newPagerBean

public static PagerBean newPagerBean()