/*
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Copyright [2020] [https://www.xiaonuo.vip]
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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Snowy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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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Snowy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/xiaonuobase/snowy
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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/xiaonuobase/snowy
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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，获取Snowy商业授权许可，请在官网购买授权，地址为 https://www.xiaonuo.vip
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*/
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package vip.xiaonuo.sys.core.mybatis.fieldfill;
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import cn.hutool.core.util.ObjectUtil;
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import cn.hutool.log.Log;
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import com.baomidou.mybatisplus.core.handlers.MetaObjectHandler;
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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 vip.xiaonuo.core.context.login.LoginContextHolder;
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import vip.xiaonuo.core.pojo.login.SysLoginUser;
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import java.util.Date;
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/**
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* 自定义sql字段填充器，自动填充创建修改相关字段
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*
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* @author xuyuxiang
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* @date 2020/3/30 15:21
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*/
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public class CustomMetaObjectHandler implements MetaObjectHandler {
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private static final Log log = Log.get();
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private static final String CREATE_USER = "createUser";
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private static final String CREATE_TIME = "createTime";
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private static final String UPDATE_USER = "updateUser";
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private static final String UPDATE_TIME = "updateTime";
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//自定义
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private static final String CREATE_DATE = "createDate";
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private static final String UPDATE_DATE = "updateDate";
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@Override
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public void insertFill(MetaObject metaObject) {
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try {
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Object updateDate = metaObject.getValue(UPDATE_DATE);
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if (ObjectUtil.isNull(updateDate)) {
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setFieldValByName(UPDATE_DATE, new Date(), metaObject);
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}
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Object createDate = metaObject.getValue(CREATE_DATE);
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if (ObjectUtil.isNull(createDate)) {
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setFieldValByName(CREATE_DATE, new Date(), metaObject);
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}
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//为空则设置createUser（BaseEntity)
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Object createUser = metaObject.getValue(CREATE_USER);
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if (ObjectUtil.isNull(createUser)) {
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setFieldValByName(CREATE_USER, this.getUserUniqueId(), metaObject);
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}
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//为空则设置createTime（BaseEntity)
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Object createTime = metaObject.getValue(CREATE_TIME);
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if (ObjectUtil.isNull(createTime)) {
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setFieldValByName(CREATE_TIME, new Date(), metaObject);
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}
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} catch (ReflectionException e) {
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//二次设置
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try {
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//为空则设置createTime（BaseEntity)
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Object createTime = metaObject.getValue(CREATE_TIME);
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if (ObjectUtil.isNull(createTime)) {
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setFieldValByName(CREATE_TIME, new Date(), metaObject);
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}
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//为空则设置createUser（BaseEntity)
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Object createUser = metaObject.getValue(CREATE_USER);
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if (ObjectUtil.isNull(createUser)) {
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setFieldValByName(CREATE_USER, this.getUserUniqueId(), metaObject);
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}
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} catch (ReflectionException ex) {
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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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@Override
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public void updateFill(MetaObject metaObject) {
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try {
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setFieldValByName(UPDATE_DATE, new Date(), metaObject);
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//设置updateUser（BaseEntity)
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setFieldValByName(UPDATE_USER, this.getUserUniqueId(), metaObject);
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//设置updateTime（BaseEntity)
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setFieldValByName(UPDATE_TIME, new Date(), metaObject);
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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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private Long getUserUniqueId() {
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try {
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SysLoginUser sysLoginUser = LoginContextHolder.me().getSysLoginUserWithoutException();
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if (ObjectUtil.isNotNull(sysLoginUser)) {
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return sysLoginUser.getId();
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} else {
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return -1L;
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}
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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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