WCP中是如何从泛型中获取泛型T的

[cjd285461936]

public abstract class HibernateSQLTools<T>{
private AbstractEntityPersister classMetadata;
proctected abstract Class<?> getTyleClass();
proctected abstract SessionFactory getSessionFactory();

public void delSQlFromFunction(Session session){
classMetadata = (AbstractEntityPersister ) getSessionFactory().getClassMetadata(getTyleClass());
String tablename = classMetadata.getTableName();
String classname = getTyleClass().getName();
......
}

}

[soton_dolphin]

1. 第一个方法，写一个泛型的子类扩展父类 public class HibernateSQLToolsImpl<T> extends HibernateSQLTools<T> HibernateSQLTools<Object> impl = new HibernateSQLToolsImpl<>(); 2. 第二个方法，写一个实际类型的子类扩展父类 public class HibernateSQLToolsImpl extends HibernateSQLTools<Object> 3. 用RAY类型 Object public class HibernateSQLToolsImpl extends HibernateSQLTools

[cjd285461936]

@Repository public class UserDaoImpl extends HibernateSQLTools<User> implements UserDaoInter{ @Resource(name="sessionFactory") private SessionFactory sessionFactory; @Override proctected Class<?> getTypeClass(){return User.class;} //重写抽象类的方法，以便于为抽象类的方法赋值 @Override proctected SessionFactory getSessionFactory{return sessionFactory;} //重写抽象类的方法，以便于为抽象类的方法赋值 @Override public void deleteEntitys(){ deleteSqlFromFunction(sessionFactory.getCurrentSession()); } ]