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更新文档增加service.createOrUpdateN2NRelations接口说明

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mazhicheng 2020-06-25 21:09:31 +08:00
parent 1693408b73
commit 8f58dc05d5
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diboot-docs/guide/diboot-core/Service接口.md
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@ -187,6 +187,26 @@ boolean updateEntityAndRelatedEntities(T entity, List<RE> relatedEntities, ISett
boolean deleteEntityAndRelatedEntities(T entity, List<RE> relatedEntities, ISetter<RE, R> relatedEntitySetter);
~~~
### createOrUpdateN2NRelations 创建或更新n-n关联
* since v2.1.0
```java
/**
* 创建或更新n-n关联
* （在主动对象的service中调用，不要求中间表有service）
* @param driverIdGetter 驱动对象getter
* @param driverId 驱动对象ID
* @param followerIdGetter 从动对象getter
* @param followerIdList 从动对象id集合
*/
<R> boolean createOrUpdateN2NRelations(SFunction<R, ?> driverIdGetter, Object driverId, SFunction<R, ?> followerIdGetter, List<? extends Serializable> followerIdList);
```
使用示例：
~~~java
List<Long> roleIdList = Arrays.asList(10L, 11L, 12L);
// 新增/修改/删除（集合为空） 中间表关联关系
userService.createOrUpdateN2NRelations(UserRole::getUserId, userId, UserRole::getRoleId, roleIdList);
~~~
### deleteEntity
```java
boolean deleteEntity(Serializable id);