Fn.FnName (mybatis-mapper 2.2.1 API)

java.lang.Object
- io.mybatis.mapper.fn.Fn.FnName<T,R>

All Implemented Interfaces:

Fn<T,R>, Serializable, Function<T,R>

Enclosing interface:

Fn<T,R>
```
public static class Fn.FnName<T,R>
extends Object
implements Fn<T,R>
```
间接支持直接指定字段名或列名，避免只能通过方法引用使用

See Also:

Serialized Form

Nested Class Summary
- Nested classes/interfaces inherited from interface io.mybatis.mapper.fn.Fn
  Fn.FnImpl<T,R>, Fn.FnName<T,R>, Fn.Fns<E>

Field Summary
- Fields inherited from interface io.mybatis.mapper.fn.Fn
  FN_CLASS_FIELD_MAP, FN_COLUMN_MAP

Constructor Summary

Constructors
Constructor Description

FnName(Class<?> entityClass, String name)

FnName(Class<?> entityClass, String name, boolean column)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`R`	`apply(Object o)`
`Fn<T,R>`	`in(Class<?> entityClass)`	当前字段所属的实体类，当实体存在继承关系时父类的方法引用无法获取字段所属的实体类，需要通过该方法指定

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface io.mybatis.mapper.fn.Fn
toClassField, toColumn, toEntityColumn, toField

Methods inherited from interface java.util.function.Function
andThen, compose

- Constructor Detail
  - FnName
```
public FnName(Class<?> entityClass,
              String name,
              boolean column)
```
  - FnName
```
public FnName(Class<?> entityClass,
              String name)
```
- Method Detail
  - in
```
public Fn<T,R> in(Class<?> entityClass)
```
    Description copied from interface: Fn
    
    当前字段所属的实体类，当实体存在继承关系时父类的方法引用无法获取字段所属的实体类，需要通过该方法指定
    
    Specified by:
    
    in in interface Fn<T,R>
    
    Parameters:
    
    entityClass - 指定实体类
    
    Returns:
    
    带有指定实体类的 Fn
  - apply
```
public R apply(Object o)
```
    Specified by:
    
    apply in interface Function<T,R>