org.aoju.bus.base.entity.Result Maven / Gradle / Ivy
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package org.aoju.bus.base.entity;
import lombok.Data;
import lombok.EqualsAndHashCode;
import java.util.Collections;
import java.util.List;
/**
* 返回结果公用
*
* @author Kimi Liu
* @version 6.3.1
* @since JDK 1.8+
*/
@Data
@EqualsAndHashCode(callSuper = true)
public class Result extends BaseEntity {
private static final long serialVersionUID = 1L;
/**
* 总数据
*/
protected int total;
/**
* 查询记录数
*/
protected List rows;
public Result() {
}
public Result(List rows) {
this.rows = rows;
}
public Result(int total, List rows) {
this.total = total;
this.rows = rows;
}
public Result(List rows, int pageSize) {
if (null == rows || rows.isEmpty()) {
throw new IllegalArgumentException("data must be not empty!");
}
new Result<>(rows, rows.size(), pageSize);
}
public Result(List rows, int total, int pageSize) {
this.total = total;
this.pageSize = pageSize;
this.rows = rows;
}
public static Result Result(List rows, int pageSize) {
return new Result<>(rows, pageSize);
}
/**
* 得到分页后的数据
*
* @param pageNo 页码
* @return 分页后结果
*/
public List get(int pageNo) {
int fromIndex = (pageNo - 1) * this.pageSize;
if (fromIndex >= this.rows.size()) {
return Collections.emptyList();
}
int toIndex = pageNo * this.pageSize;
if (toIndex >= this.rows.size()) {
toIndex = this.rows.size();
}
return this.rows.subList(fromIndex, toIndex);
}
}