EntityManager查询的两种封装方法

//查询参数
	Query query = entityManager.createNativeQuery(sqlBuffer.toString());
// 封装为map
	query.unwrap(SQLQuery.class).setResultTransformer(Transformers.ALIAS_TO_ENTITY_MAP);
// 封装为实体类
	query = entityManager.createNativeQuery(sqlBuffer.toString(),Invest.class);