1）Mybatis反射工具reflector

1. 代码结构

org.apache.ibatis.reflection

 

2. 反射基类 org.apache.ibatis.reflection.Reflector

 主要针对传递的class对象通过反射自动解析出对应的get，set方法

2.1.1 org.apache.ibatis.reflection.invoker.Invoker

通过反射获取的field，method的调用处理类

 

2.2 . 反射工厂 org.apache.ibatis.reflection.ReflectorFactory

反射工厂主要为了提升Reflector 的初始化速度， 对Reflector对象进行缓存，最核心的方法是用来获取Reflector对象的findClass方法，

org.apache.ibatis.reflection.DefaultReflectorFactory
    org.apache.ibatis.reflection.ReflectorFactory

org.apache.ibatis.reflection.DefaultReflectorFactory#findForClass

  @Override
  public Reflector findForClass(Class type) {
    if (classCacheEnabled) {
      // synchronized (type) removed see issue #461
      return MapUtil.computeIfAbsent(reflectorMap, type, Reflector::new);
    } else {
      return new Reflector(type);
    }
  }

 

 3. 默认对象工厂org.apache.ibatis.reflection.factory.ObjectFactory

 顾名思义负责对象的自动创建，通过传入class对象自动根据入参选择对应的构造器进行创建

3.1 org.apache.ibatis.reflection.factory.ObjectFactory

3.2 org.apache.ibatis.reflection.factory.DefaultObjectFactory

 4. 类信息处理类 org.apache.ibatis.reflection.MetaClass

    

 

 

 

5. 对象处理基类org.apache.ibatis.reflection.MetaObject

 

6 . org.apache.ibatis.reflection.wrapper.ObjectWrapper

 

 7. 属性分词器 org.apache.ibatis.reflection.property.PropertyTokenizer

7.1 分词逻辑

org.apache.ibatis.reflection.property.PropertyTokenizer
  
  private String name;
  private final String indexedName;
  private String index;
  private final String children;

public PropertyTokenizer(String fullname) {
    int delim = fullname.indexOf('.');
    if (delim > -1) {
      name = fullname.substring(0, delim);
      children = fullname.substring(delim + 1);
    } else {
      name = fullname;
      children = null;
    }
    indexedName = name;
    delim = name.indexOf('[');
    if (delim > -1) {
      index = name.substring(delim + 1, name.length() - 1);
      name = name.substring(0, delim);
    }
  }