/*
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* Copyright [2020-2030] [https://www.stylefeng.cn]
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Guns采用APACHE LICENSE 2.0开源协议，您在使用过程中，需要注意以下几点：
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*
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* 1.请不要删除和修改根目录下的LICENSE文件。
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* 2.请不要删除和修改Guns源码头部的版权声明。
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* 3.请保留源码和相关描述文件的项目出处，作者声明等。
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* 4.分发源码时候，请注明软件出处 https://gitee.com/stylefeng/guns
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* 5.在修改包名，模块名称，项目代码等时，请注明软件出处 https://gitee.com/stylefeng/guns
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* 6.若您的项目无法满足以上几点，可申请商业授权
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*/
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package cn.stylefeng.roses.kernel.db.mp.fieldfill;
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import cn.hutool.core.util.ClassUtil;
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import cn.hutool.core.util.ObjectUtil;
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import cn.stylefeng.roses.kernel.auth.api.context.LoginContext;
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import cn.stylefeng.roses.kernel.rule.enums.StatusEnum;
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import cn.stylefeng.roses.kernel.rule.enums.YesOrNotEnum;
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import com.baomidou.mybatisplus.core.handlers.MetaObjectHandler;
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import lombok.extern.slf4j.Slf4j;
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import org.apache.ibatis.reflection.MetaObject;
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import org.apache.ibatis.reflection.ReflectionException;
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import java.lang.reflect.Field;
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import java.util.Date;
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import static cn.stylefeng.roses.kernel.db.api.constants.DbFieldConstants.*;
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/**
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* 字段自动填充工具，在mybatis-plus执行更新和新增操作时候，会对指定字段进行自动填充，例如 create_time 等字段
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*
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* @author fengshuonan
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* @date 2020/10/16 17:14
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*/
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@Slf4j
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public class CustomMetaObjectHandler implements MetaObjectHandler {
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@Override
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public void insertFill(MetaObject metaObject) {
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try {
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// 设置createUser（BaseEntity)
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setValue(metaObject, CREATE_USER, this.getUserUniqueId());
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// 设置createTime（BaseEntity)
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setValue(metaObject, CREATE_TIME, new Date());
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// 设置删除标记 默认N-删除
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setDelFlagDefaultValue(metaObject);
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// 设置状态字段 默认1-启用
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setStatusDefaultValue(metaObject);
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// 设置乐观锁字段，从0开始
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setValue(metaObject, VERSION_FLAG, 0L);
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// 设置组织id
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setValue(metaObject, ORG_ID, this.getUserOrgId());
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} catch (ReflectionException e) {
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log.warn("CustomMetaObjectHandler处理过程中无相关字段，不做处理");
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}
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}
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@Override
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public void updateFill(MetaObject metaObject) {
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try {
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// 设置updateUser（BaseEntity)
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setValue(metaObject, UPDATE_USER, this.getUserUniqueId());
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// 设置updateTime（BaseEntity)
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setValue(metaObject, UPDATE_TIME, new Date());
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} catch (ReflectionException e) {
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log.warn("CustomMetaObjectHandler处理过程中无相关字段，不做处理");
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}
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}
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/**
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* 获取用户唯一id
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*
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* @author fengshuonan
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* @date 2021/10/29 10:01
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*/
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private Long getUserUniqueId() {
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try {
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return LoginContext.me().getLoginUser().getUserId();
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} catch (Exception e) {
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//如果获取不到就返回-1
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return -1L;
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}
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}
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/**
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* 设置属性
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*
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* @author fengshuonan
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* @date 2021/10/29 10:01
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*/
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private void setValue(MetaObject metaObject, String fieldName, Object value) {
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Object originalAttr = getFieldValByName(fieldName, metaObject);
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if (ObjectUtil.isEmpty(originalAttr)) {
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setFieldValByName(fieldName, value, metaObject);
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}
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}
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/**
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* 获取用户唯一id
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*
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* @author yxx
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* @date 2022/09/01 10:14
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*/
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private Long getUserOrgId() {
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try {
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return LoginContext.me().getLoginUser().getOrganizationId();
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} catch (Exception e) {
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//如果获取不到就返回-1
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return -1L;
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}
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}
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/**
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* 设置属性，针对逻辑删除字段
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*
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* @author fengshuonan
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* @date 2022/9/7 17:23
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*/
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private void setDelFlagDefaultValue(MetaObject metaObject) {
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Object originalAttr = getFieldValByName(DEL_FLAG, metaObject);
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if (ObjectUtil.isNotEmpty(originalAttr)) {
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return;
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}
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Object originalObject = metaObject.getOriginalObject();
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try {
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// 获取delFlag字段的类型，如果是枚举类型，则设置枚举
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Field declaredField = originalObject.getClass().getDeclaredField(DEL_FLAG);
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if (ClassUtil.isEnum(declaredField.getType())) {
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setFieldValByName(DEL_FLAG, YesOrNotEnum.N, metaObject);
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} else {
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setFieldValByName(DEL_FLAG, YesOrNotEnum.N.getCode(), metaObject);
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}
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} catch (NoSuchFieldException ignored) {
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// 没有字段，忽略
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}
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}
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/**
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* 设置属性，针对状态字段
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*
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* @author fengshuonan
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* @date 2022/9/7 17:23
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*/
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private void setStatusDefaultValue(MetaObject metaObject) {
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Object originalAttr = getFieldValByName(STATUS_FLAG, metaObject);
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if (ObjectUtil.isNotEmpty(originalAttr)) {
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return;
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}
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Object originalObject = metaObject.getOriginalObject();
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try {
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// 获取statusFlag字段的类型，如果是枚举类型，则设置枚举
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Field declaredField = originalObject.getClass().getDeclaredField(STATUS_FLAG);
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if (ClassUtil.isEnum(declaredField.getType())) {
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setFieldValByName(STATUS_FLAG, StatusEnum.ENABLE, metaObject);
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} else {
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setFieldValByName(STATUS_FLAG, StatusEnum.ENABLE.getCode(), metaObject);
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}
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} catch (NoSuchFieldException ignored) {
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// 没有字段，忽略
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}
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}
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}
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