package com.imooc.entity;

/**

?* 分頁對應的實體類

?*/

public class Page {

/**

* 總條數

*/

private int totalNumber;

/**

* 當前第幾頁

*/

private int currentPage;

/**

* 總頁數

*/

private int totalPage;

/**

* 每頁顯示條數

*/

private int pageNumber = 5;

/**

* 數據庫中limit的參數，從第幾條開始取

*/

private int dbIndex;

/**

* 數據庫中limit的參數，一共取多少條

*/

private int dbNumber;

/**

* 根據當前對象中屬性值計算并設置相關屬性值

*/

public void count() {

// 計算總頁數

int totalPageTemp = this.totalNumber / this.pageNumber;

int plus = (this.totalNumber % this.pageNumber) == 0 ? 0 : 1;

totalPageTemp = totalPageTemp + plus;

if(totalPageTemp <= 0) {

totalPageTemp = 1;

}

this.totalPage = totalPageTemp;

// 設置當前頁數

// 總頁數小于當前頁數，應將當前頁數設置為總頁數

if(this.totalPage < this.currentPage) {

this.currentPage = this.totalPage;

}

// 當前頁數小于1設置為1

if(this.currentPage < 1) {

this.currentPage = 1;

}

// 設置limit的參數

this.dbIndex = (this.currentPage - 1) * this.pageNumber;

this.dbNumber = this.pageNumber;

}

public int getTotalNumber() {

return totalNumber;

}

public void setTotalNumber(int totalNumber) {

this.totalNumber = totalNumber;

this.count();

}

public int getCurrentPage() {

return currentPage;

}

public void setCurrentPage(int currentPage) {

this.currentPage = currentPage;

}

public int getTotalPage() {

return totalPage;

}

public void setTotalPage(int totalPage) {

this.totalPage = totalPage;

}

public int getPageNumber() {

return pageNumber;

}

public void setPageNumber(int pageNumber) {

this.pageNumber = pageNumber;

this.count();

}

public int getDbIndex() {

return dbIndex;

}

public void setDbIndex(int dbIndex) {

this.dbIndex = dbIndex;

}

public int getDbNumber() {

return dbNumber;

}

public void setDbNumber(int dbNumber) {

this.dbNumber = dbNumber;

}

}