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原标题:When to use ElementFactory method in Spring

I am using springs AutoPopulateList using following METHOD 1

 passports = new AutoPopulatingList<Passport>(Passport.class); 

METHOD2 and also first creating Passportfactory

public class PassportFactory implements AutoPopulatingList.ElementFactory {
  private Person person;

  public PassportFactory(Person person) {
     this.person = person;
  }

  public Object createElement(int index) {
    Passport passport = new Passport();
    passport.setPerson(person);
    return passport;
  }
}

然后使用

List<Passport> passports = new AutoPopulatingList(new PassportFactory(this));

现在,这两部法典都在发挥作用,但我不知道二部法典之间的区别是什么,二部法典由于从互联网上复制而将如何发挥作用。 一个人能够向我解释区别

最佳回答

如果使用:

<代码>通行证 = 新的 AutoPopulatingList<Passport>Pasport.class; Spring will use a ReflectiveElement 工厂配制;E>,以创造元素。

举例来说,这意味着你的名单内容必须没有任何参数构造。

但是,如果你没有这种你名单要素的构造,或需要以特殊方式建设这些要素,那么你需要创建自己的<代码>。 ElementFactory 。 - 比如,你的第二部法典将<代码>人<>代码/代码>的实地设定为名单要素,而第一部则将离开这个领域。

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