我愿将我的 Java申请部署到Im的Heroku,使用ec网连接JPA。

我在我的项目中使用JPA +hibernate。 我不得不从已经存在的数据库中检索数据,不能对其作出修改。

我拥有三个模型的保密数据库:

我在进行以下假设情景时就提到上述例外情况。

我有附加说明的方法,通过计算参数接收一个实体。 在这种方法中,我试图确定三个变数:

I have mapped my inheritance hierarchy in Hibernate using InheritanceType.Single_Table and discriminator columns to distinguish between the different entities. All subclasses of the superclass store ...

Possible Duplicate: Hibernate and Spring - entity with multiple members inheriting from same parent causes JDBCException, @Transactional weirdness I have reformated this question into SSCCE - See ...

我通常想做这样的事情:

I m 扩展一个拥有汽车的实体。

I m目前试图用JQPL收集数据。 我的祝福

我有3个表象——类别、图象和图象——链接类别(有多个协会的b/w类和广告)

I have a JPA entity with a blob field in it. I want to write a JPQL query to fetch the length of the entity s blob (I don t want to load the blob into the memory). For instance, in Oracle, I can use ...

I m与JPA(自愿作为供应商)和MySQL数据库合作。

I m trying to do a multiselect on an entity with an IdClass. I can t get a column that is mapped as part of the ID. It s clear why I can t, as none of the columns that are marked as @Ids are a part of ...

我有一个称为“飞行”的域级,是飞行流动。 我还有一个称为“运动”的班子,可以代表离境或抵达,并注明日期和日期。

我总是收到有人向“把 de倒并试图再次去除”提出的咨询意见。

I m not much familiar with JPA, but I have this scenario: I would like to use the same classes (read "code") on both the server and the client (Java SE) for KISS/DRY reasons. It seems to me that one ...

我刚刚从“游乐框架”开始,我会利用我的一门模式收集一些问题。 我对“游戏”和“JPA/Hibernate”非常新,因此,请原谅。 I ......

是否有任何人用玻璃鱼成功使用开放JPA?

我需要像部分反对我的一个实体那样。