Question

我更新了事务中的一个对象，它已成功更新并与数据库同步......但每当我使用query.getResultList（）检索实体时，它都没有返回带有更新的对象和值的List。 / p>

这是代码指的我是怎么做的......

    javax.persistence.EntityManager entityManager = java.beans.Beans.isDesignTime() ? null : javax.persistence.Persistence.createEntityManagerFactory("jdbc:oracle:thin:@Siddhant-PC:1521:XEPU").createEntityManager(); 
    javax.persistence.Query professionalWorkQuery = java.beans.Beans.isDesignTime() ? null : entityManager.createQuery("SELECT p FROM ProfessionalWork p order by p.jobNo");
    java.util.List<ProfessionalWork> professionalWorkList = java.beans.Beans.isDesignTime() ? java.util.Collections.emptyList() : professionalWorkQuery.getResultList();

更新对象的代码......

ProfessionalWork proWork = entityManager.find(ProfessionalWork.class, jobNo);

                entityManager.getTransaction().begin();
                    proWork.setStatus("Ready");
                    proWork.setReadyTime(DateWrapper.getTime());
                entityManager.getTransaction().commit();

检索所有对象的代码......

professionalWorkList = professionalWorkQuery.getResultList();
    Iterator lab =  professionalWorkList.listIterator();
    while(lab.hasNext()){
           ProfessionalWork pWork = (ProfessionalWork) lab.next();
           System.out.println(pWork.getJobNo()+" -- "+pWork.getStatus()); 
              //Here i'm getting All Objects(even newly added objects also...but i'm not getting my modified values in objects)
     }
professionalWorkList.clear();

Answer 1

刚刚在此处引用了该文档：https://docs.oracle.com/javaee/6/tutorial/doc/gkjjj.html。很高兴它有效！

professionalWorkQuery.setHint（＆＃34; javax.persistence.cache.storeMode＆＃34;，＆＃34; REFRESH＆＃34;）;

如何从JPA resultList获取更新的实体。

1 个答案: