Question

我已经重写了这个问题，以便说清楚。

我有一个这样的实体：

@Entity
@NamedQueries({
    @NamedQuery(
        name = "myObj.findCurrentUsingFunction", 
        query = "from MyObj where insertDate = current_date() "),

    @NamedQuery(
        name = "myObj.findCurrentUsingParameter", 
        query = "from MyObj where insertDate = :currentDate")
})

public class MyObj {
    @Id @GeneratedValue @Column
    private Long id;

    @Column @Temporal(TemporalType.DATE)
    private Date insertDate;

    /* getter, setter */
}

我的测试失败了：

@Test
public void findCurrentUsingFunction() throws Exception {
    final MyObj myObj = new MyObj();
    myObj.setInsertDate(new Date());
    final Session session = dao.getSessionFactory().getCurrentSession();
    session.saveOrUpdate(myObj);
    final Query namedQuery = 
        session.getNamedQuery("myObj.findCurrentUsingFunction");
    final List results = namedQuery.list();
    Assert.assertEquals("size",1L, (long) results.size());
}

Hibernate：从双Hibernate中选择hibernate_sequence.nextval：   插入MyObj（insertDate，id）值（？，？）Hibernate：select   myobj0_.id为来自MyObj的id0_，myobj0_.insertDate为insertDate0_   myobj0_ where myobj0_.insertDate = current_date

java.lang.AssertionError：期望的大小：＆lt; 1＆gt;但是：＆lt; 0＆gt;

和通过测试

@Test
public void findCurrentUsingParameter() throws Exception {
    final MyObj myObj = new MyObj();
    myObj.setInsertDate(new Date());
    final Session currentSession = dao.getSessionFactory().getCurrentSession();
    currentSession.saveOrUpdate(myObj);
    final Query namedQuery =
        currentSession.getNamedQuery("myObj.findCurrentUsingParameter");
    namedQuery.setDate("currentDate", new Date());
    final List results = namedQuery.list();
    Assert.assertEquals("size",1L, (long) results.size());
}

方言是：

hibernate.dialect = org.hibernate.dialect.Oracle10gDialect

Answer 1

您在HSQL语句中使用sql函数，因此它不起作用。删除括号以使用hibernate current_date函数，如下所示：

@NamedQuery(
    name = "entity.findCurrent", 
    query = "from EntityName where insertDate = current_date")

或者，我会这样做（实际上我也会使用joda-time来创建我的日期时间变量currentDate）

@NamedQuery(
    name = "entity.findCurrent", 
    query = "from EntityName where insertDate = :currentDate")

然后在调用命名查询时传入日期

session.getNamedQuery(findCurrent).setDate("currentDate", currentDate);

或者您可以使用critiera。

Hibernate当前日期不起作用

1 个答案: