Question

我有三个表设备，车辆和vehicle_device所有表都在一个模式'tcm'中，我试图通过'device imei'获得'车辆'。在Vehicle.class中，我有“Set devices”字段并创建maping：

Vehicle.hbm.xml

<hibernate-mapping package="hibernate.entity">
<class name="Vehicle" table="vehicles" schema="tcm">
    <id name="id" type="integer" column="id">
       <generator class="sequence">
            <param name="sequence">tcm.vehicles_id_seq</param>
        </generator>
    </id>       
    .
    .
    .
    <set name="devices" table="vehicle_device"
        inverse="false" lazy="true" fetch="select" cascade="all" >
        <key>
            <column name="vehicle_id" not-null="true" />
        </key>
        <many-to-many entity-name="hibernate.entity.Device">
            <column name="device_id" not-null="true" />
        </many-to-many>
    </set>

</class>

执行条件以获取所需'device imei'的结果时

@Override
public Vehicle getVehicleByDeviceImei(String imei) {
    Criteria criteria = getSession().createCriteria(Vehicle.class);
    criteria.createAlias("devices", "devices").add(Restrictions.eq("devices.imei", imei));
    Vehicle v = (Vehicle) criteria.uniqueResult();
    return v;
}

一切正常，除了生成的查询没有为第一个内连接中的链接表'vehicle_device'添加模式'tcm'

select       .
             .
             .
             .
from
    tcm.vehicles this_ 
inner join
    vehicle_device devices3_ 
        on this_.id=devices3_.vehicle_id 
inner join
    devices devices1_ 
        on devices3_.device_id=devices1_.id 
where
    devices1_.device_imei=?

并出错：错误：关系“vehicle_device”不存在第17行：vehicle_device devices3_

如果我将手动架构添加到生成的查询 - ＆gt; 'tcm.vehicle_device'它的工作原理。如何修复我的配置，以便Hibernate Criteria为表'vehicle_device'添加模式。

Answer 1

我解决了问题。我刚刚在映射

中的set标签中添加了scheme ='tcm'

Hibernate Criteria不向表添加模式

1 个答案: