EntityCallback的使用

最新推荐文章于 2024-03-19 13:11:57 发布

陈家宝

最新推荐文章于 2024-03-19 13:11:57 发布

阅读量912

点赞数

分类专栏： elasticsearch spring 文章标签： EntityCallback Spring Data

本文链接：https://blog.youkuaiyun.com/qq_31155349/article/details/108944812

版权

spring 同时被 2 个专栏收录

12 篇文章

订阅专栏

elasticsearch

6 篇文章

订阅专栏

前言

Spring Data 通过钩子实现了在保存或修改数据前后执行指定的方法，即EntityCallback。本文示例EntityCallback在Spring Data Elasticsearch中的使用。

一、注册EntityCallback

package cn.jack.elasticsearchdemo.callback;

import cn.jack.elasticsearchdemo.domain.Person;
import lombok.extern.slf4j.Slf4j;
import org.springframework.core.annotation.Order;
import org.springframework.data.elasticsearch.core.document.Document;
import org.springframework.data.elasticsearch.core.event.AfterConvertCallback;
import org.springframework.data.elasticsearch.core.event.AfterSaveCallback;
import org.springframework.data.elasticsearch.core.event.BeforeConvertCallback;
import org.springframework.data.elasticsearch.core.mapping.IndexCoordinates;
import org.springframework.stereotype.Component;

@Order(1)
@Component
@Slf4j
public class PersonCallback implements BeforeConvertCallback<Person>, AfterConvertCallback<Person>, AfterSaveCallback<Person> {
    @Override
    public Person onBeforeConvert(Person entity, IndexCoordinates index) {
        log.info("onBeforeConvert, Person={}, index={}", entity, index);
        return entity;
    }

    @Override
    public Person onAfterConvert(Person entity, Document document, IndexCoordinates indexCoordinates) {
        log.info("onAfterConvert");
        return entity;
    }

    @Override
    public Person onAfterSave(Person entity, IndexCoordinates index) {
        log.info("onAfterSave, Person={}, index={}", entity, index);
        return entity;
    }
}

二、测试

使用junit进行测试，保存及修改Person数据，在保存数据前后，都执行了打印输出。

    @Test
    public void testAuditing() {
        Person person = new Person();
        person.setName("EntityCallback的使用");
        this.personRepository.save(person);
        System.out.println(person);

        try {
            Thread.sleep(1000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

        person.setHobbies(Arrays.asList("跳舞"));
        this.personRepository.save(person);
        System.out.println(person);
    }

// 控制台输出
2020-10-06 22:39:29.903  INFO 1004 --- [           main] c.j.e.callback.PersonCallback            : onBeforeConvert, Person=Person(id=null, name=EntityCallback的使用, gender=null, book=null, hobbies=null, abc=null, createdDate=null, createdBy=null, lastModifiedDate=null, lastModifiedBy=null), index=IndexCoordinates{indexNames=[jack_person], typeNames=[person]}
2020-10-06 22:39:29.968  INFO 1004 --- [           main] c.j.e.callback.PersonCallback            : onAfterSave, Person=Person(id=ZTxa_nQBrwRoe5ExYNmj, name=EntityCallback的使用, gender=null, book=null, hobbies=null, abc=null, createdDate=2020-10-06T14:39:29.917001600Z, createdBy=User[username=jack,roles=[ROLE_ADMIN],metadata={},fullName=null,email=null], lastModifiedDate=2020-10-06T14:39:29.917001600Z, lastModifiedBy=User[username=jack,roles=[ROLE_ADMIN],metadata={},fullName=null,email=null]), index=IndexCoordinates{indexNames=[jack_person], typeNames=[person]}
Person(id=ZTxa_nQBrwRoe5ExYNmj, name=EntityCallback的使用, gender=null, book=null, hobbies=null, abc=null, createdDate=2020-10-06T14:39:29.917001600Z, createdBy=User[username=jack,roles=[ROLE_ADMIN],metadata={},fullName=null,email=null], lastModifiedDate=2020-10-06T14:39:29.917001600Z, lastModifiedBy=User[username=jack,roles=[ROLE_ADMIN],metadata={},fullName=null,email=null])
2020-10-06 22:39:31.007  INFO 1004 --- [           main] c.j.e.callback.PersonCallback            : onBeforeConvert, Person=Person(id=ZTxa_nQBrwRoe5ExYNmj, name=EntityCallback的使用, gender=null, book=null, hobbies=[跳舞], abc=null, createdDate=2020-10-06T14:39:29.917001600Z, createdBy=User[username=jack,roles=[ROLE_ADMIN],metadata={},fullName=null,email=null], lastModifiedDate=2020-10-06T14:39:29.917001600Z, lastModifiedBy=User[username=jack,roles=[ROLE_ADMIN],metadata={},fullName=null,email=null]), index=IndexCoordinates{indexNames=[jack_person], typeNames=[person]}
2020-10-06 22:39:31.031  INFO 1004 --- [           main] c.j.e.callback.PersonCallback            : onAfterSave, Person=Person(id=ZTxa_nQBrwRoe5ExYNmj, name=EntityCallback的使用, gender=null, book=null, hobbies=[跳舞], abc=null, createdDate=2020-10-06T14:39:29.917001600Z, createdBy=User[username=jack,roles=[ROLE_ADMIN],metadata={},fullName=null,email=null], lastModifiedDate=2020-10-06T14:39:31.008001600Z, lastModifiedBy=User[username=jack,roles=[ROLE_ADMIN],metadata={},fullName=null,email=null]), index=IndexCoordinates{indexNames=[jack_person], typeNames=[person]}
Person(id=ZTxa_nQBrwRoe5ExYNmj, name=EntityCallback的使用, gender=null, book=null, hobbies=[跳舞], abc=null, createdDate=2020-10-06T14:39:29.917001600Z, createdBy=User[username=jack,roles=[ROLE_ADMIN],metadata={},fullName=null,email=null], lastModifiedDate=2020-10-06T14:39:31.008001600Z, lastModifiedBy=User[username=jack,roles=[ROLE_ADMIN],metadata={},fullName=null,email=null])