import org.apache.ibatis.reflection.wrapper.MapWrapper; //导入依赖的package包/类
private MetaObject(Object object, ObjectFactory objectFactory, ObjectWrapperFactory objectWrapperFactory, ReflectorFactory reflectorFactory) {
  this.originalObject = object;
  this.objectFactory = objectFactory;
  this.objectWrapperFactory = objectWrapperFactory;
  this.reflectorFactory = reflectorFactory;

  if (object instanceof ObjectWrapper) {
    this.objectWrapper = (ObjectWrapper) object;
  } else if (objectWrapperFactory.hasWrapperFor(object)) {
    this.objectWrapper = objectWrapperFactory.getWrapperFor(this, object);
  } else if (object instanceof Map) {
    this.objectWrapper = new MapWrapper(this, (Map) object);
  } else if (object instanceof Collection) {
    this.objectWrapper = new CollectionWrapper(this, (Collection) object);
  } else {
    this.objectWrapper = new BeanWrapper(this, object);
  }
}
 

import org.apache.ibatis.reflection.wrapper.MapWrapper; //导入依赖的package包/类
private MetaObject(Object object, ObjectFactory objectFactory, ObjectWrapperFactory objectWrapperFactory) {
  this.originalObject = object;
  this.objectFactory = objectFactory;
  this.objectWrapperFactory = objectWrapperFactory;

  if (object instanceof ObjectWrapper) {
      //如果对象本身已经是ObjectWrapper型，则直接赋给objectWrapper
    this.objectWrapper = (ObjectWrapper) object;
  } else if (objectWrapperFactory.hasWrapperFor(object)) {
      //如果有包装器,调用ObjectWrapperFactory.getWrapperFor
    this.objectWrapper = objectWrapperFactory.getWrapperFor(this, object);
  } else if (object instanceof Map) {
      //如果是Map型，返回MapWrapper
    this.objectWrapper = new MapWrapper(this, (Map) object);
  } else if (object instanceof Collection) {
      //如果是Collection型，返回CollectionWrapper
    this.objectWrapper = new CollectionWrapper(this, (Collection) object);
  } else {
      //除此以外，返回BeanWrapper
    this.objectWrapper = new BeanWrapper(this, object);
  }
}