io.mybatis.mapper

Interface BaseMapper<T,I extends Serializable>

Type Parameters:

T - 实体类类型

I - 主键类型

All Superinterfaces:

CursorMapper<T,Example<T>>, io.mybatis.provider.EntityInfoMapper<T>, EntityMapper<T,I>, ExampleMapper<T,Example<T>>

All Known Subinterfaces:

Mapper<T,I>

public interface BaseMapper<T,I extends Serializable>
extends EntityMapper<T,I>, ExampleMapper<T,Example<T>>, CursorMapper<T,Example<T>>

基础 Mapper 方法，可以在此基础上继承覆盖已有方法

Author:

liuzh

Nested Class Summary

Nested classes/interfaces inherited from interface io.mybatis.provider.EntityInfoMapper

io.mybatis.provider.EntityInfoMapper.CachingEntityClass

Method Summary

Modifier and Type	Method and Description
default <F> int	deleteByFieldList(Fn<T,F> field, List<F> fieldValueList) 根据指定字段集合删除：field in (fieldValueList)
default <F> List<T>	selectByFieldList(Fn<T,F> field, List<F> fieldValueList) 根据指定字段集合查询：field in (fieldValueList)
int	updateByPrimaryKeySelectiveWithForceFields(T entity, Fn.Fns<T> forceUpdateFields) 根据主键更新实体中不为空的字段，强制字段不区分是否 null，都更新
default ExampleWrapper<T,I>	wrapper() Example 查询封装

Methods inherited from interface io.mybatis.mapper.base.EntityMapper

delete, deleteByPrimaryKey, insert, insertSelective, selectByPrimaryKey, selectCount, selectList, selectOne, updateByPrimaryKey, updateByPrimaryKeySelective

Methods inherited from interface io.mybatis.provider.EntityInfoMapper

entityClass, entityTable

Methods inherited from interface io.mybatis.mapper.example.ExampleMapper

countByExample, deleteByExample, example, selectByExample, selectByExample, selectOneByExample, updateByExample, updateByExampleSelective, updateByExampleSetValues

Methods inherited from interface io.mybatis.mapper.cursor.CursorMapper

selectCursor, selectCursorByExample

Method Detail

wrapper

default ExampleWrapper<T,I> wrapper()

Example 查询封装

updateByPrimaryKeySelectiveWithForceFields

@Lang(value=io.mybatis.provider.Caching.class)
 @UpdateProvider(type=FnProvider.class,
                method="updateByPrimaryKeySelectiveWithForceFields")
int updateByPrimaryKeySelectiveWithForceFields(@Param(value="entity")
                                                                                                                                                                                                           T entity,
                                                                                                                                                                                                           @Param(value="fns")
                                                                                                                                                                                                           Fn.Fns<T> forceUpdateFields)

根据主键更新实体中不为空的字段，强制字段不区分是否 null，都更新

当前方法来自 FnMapper，该接口中的其他方法用 ExampleMapper 也能实现

Parameters:

entity - 实体类

forceUpdateFields - 强制更新的字段，不区分字段是否为 null，通过 Fn.of(Fn...) 创建 Fn.Fns

Returns:

1成功，0失败

selectByFieldList

default <F> List<T> selectByFieldList(Fn<T,F> field,
                                      List<F> fieldValueList)

根据指定字段集合查询：field in (fieldValueList)

这个方法是个示例，你也可以使用 Java8 的默认方法实现一些通用方法

Type Parameters:

F - 字段类型

Parameters:

field - 字段

fieldValueList - 字段值集合

Returns:

实体列表

deleteByFieldList

default <F> int deleteByFieldList(Fn<T,F> field,
                                  List<F> fieldValueList)

根据指定字段集合删除：field in (fieldValueList)

这个方法是个示例，你也可以使用 Java8 的默认方法实现一些通用方法

Type Parameters:

F - 字段类型

Parameters:

field - 字段

fieldValueList - 字段值集合

Returns:

实体列表