package com.doumee.core.model;
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import com.baomidou.mybatisplus.core.metadata.IPage;
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import com.github.pagehelper.PageInfo;
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import io.swagger.annotations.ApiModel;
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import io.swagger.annotations.ApiModelProperty;
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import lombok.Data;
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import java.io.Serializable;
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import java.util.List;
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/**
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* @author Eva.Caesar Liu
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* @date 2022/03/15 09:54
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*/
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@Data
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@ApiModel("分页对象")
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public class PageData<T> implements Serializable {
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@ApiModelProperty("目标页")
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private long page;
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@ApiModelProperty("页容量")
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private long capacity;
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@ApiModelProperty("总记录数")
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private long total;
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@ApiModelProperty("当前页的数据")
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private List<T> records;
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public PageData(long page, long capacity) {
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this.page = page;
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this.capacity = capacity;
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}
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/**
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* 根据MyBatis Plus分页对象组装
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* @author Eva.Caesar Liu
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* @date 2022/03/15 09:54
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*/
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public static <T> PageData<T> from(IPage<T> pageInfo) {
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PageData<T> pageData = new PageData<T>(pageInfo.getCurrent(), pageInfo.getSize());
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pageData.total = pageInfo.getTotal();
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pageData.records = pageInfo.getRecords();
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return pageData;
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}
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/**
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* 根据MyBatis原生分页对象组装
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* @author Eva.Caesar Liu
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* @date 2022/03/15 09:54
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*/
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public static <T> PageData<T> from(PageInfo<T> pageInfo) {
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PageData<T> pageData = new PageData<>(pageInfo.getPageNum(), pageInfo.getPageSize());
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pageData.total = pageInfo.getTotal();
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pageData.records = pageInfo.getList();
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return pageData;
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}
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/**
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* 处理异常页容量
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* @author Eva.Caesar Liu
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* @date 2022/03/15 09:54
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*/
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public long getCapacity () {
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return capacity <= 0 ? 10 : capacity;
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}
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/**
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* @author Eva.Caesar Liu
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* @date 2022/03/15 09:54
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*/
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@ApiModelProperty("总页数")
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public long getPageCount(){
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if(this.getTotal() % this.getCapacity() == 0){
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long pc = this.getTotal()/this.getCapacity();
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return pc == 0 ? 1 : pc;
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}
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return this.getTotal()/this.getCapacity() + 1;
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}
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}
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