错误object references an unsaved transient instance - save the transient instance

最新推荐文章于 2024-04-07 09:38:15 发布

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本文介绍了一个关于Hibernate框架中出现objectreferencesanunsavedtransientinstance错误的问题及其解决方案。该错误通常发生在尝试保存一个与未持久化的实体有关联的对象时。文中详细展示了Hibernate的配置示例，并提供了解决方案——通过在<set>元素中加入级联更新属性cascade=all来确保所有关联对象都能被正确地保存。

object references an unsaved transient instance - save the transient instance before flushing: com.xuguang.u8.rdrecord.bean.RdRecordTubeCode
hibernate 配置如下
<class name="RdRecords" table="rdrecords" schema="dbo">
<id name="autoID">
<generator class="assigned"></generator>
</id>
<many-to-one name="inventory" column="cInvCode" lazy="false" update="false" insert="false"></many-to-one>
<property name="quantity" column="iQuantity" update="false" insert="false"></property>
<property name="unitCost" column="iUnitCost" update="false" insert="false"></property>
<property name="price" column="iPrice" update="false" insert="false"></property>
<many-to-one name="RdRecord" column="ID" lazy="false" update="false" insert="false"></many-to-one>
<set name="tubeCodes" lazy="false">
<key column="autoID"/>
<one-to-many class="RdRecordTubeCode"/>
</set>
</class>

<class name="RdRecordTubeCode" table="rdrecordsTubeCode_002_2009" schema="dbo" catalog="U8_xuguang">
<id name="id">
<generator class="native"></generator>
</id>
<property name="autoID"></property>
<property name="tubeCode"></property>
<property name="rdID"></property>
</class>

在<set>中，加入及联更新 cascade="all"