96 lines
2.0 KiB
Java
96 lines
2.0 KiB
Java
package com.example.model;
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import java.io.Serializable;
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import java.util.Date;
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/**
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* 基础实体类
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* 包含所有实体通用的字段和方法
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*/
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public abstract class BaseEntity implements Serializable {
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private static final long serialVersionUID = 1L;
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private Long id;
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private Date createdAt;
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private Date updatedAt;
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private Boolean active;
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public BaseEntity() {
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// 默认为激活状态
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this.active = true;
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// 默认设置创建和更新时间
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Date now = new Date();
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this.createdAt = now;
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this.updatedAt = now;
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}
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/**
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* 判断实体是否为新建（未持久化）状态
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*/
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public boolean isNew() {
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return id == null;
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}
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/**
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* 判断实体是否为激活状态
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*/
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public boolean isActive() {
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return active == null ? false : active;
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}
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/**
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* 激活实体
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*/
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public void activate() {
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this.active = true;
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this.updatedAt = new Date();
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}
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/**
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* 停用实体
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*/
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public void deactivate() {
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this.active = false;
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this.updatedAt = new Date();
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}
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/**
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* 更新实体的最后修改时间
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*/
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public void touch() {
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this.updatedAt = new Date();
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}
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public Long getId() {
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return id;
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}
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public void setId(Long id) {
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this.id = id;
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}
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public Date getCreatedAt() {
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return createdAt;
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}
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public void setCreatedAt(Date createdAt) {
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this.createdAt = createdAt;
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}
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public Date getUpdatedAt() {
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return updatedAt;
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}
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public void setUpdatedAt(Date updatedAt) {
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this.updatedAt = updatedAt;
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}
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public Boolean getActive() {
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return active;
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}
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public void setActive(Boolean active) {
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this.active = active;
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}
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} |