Question

首先，请参阅Hibernate映射摘录：Oracle DB中的可变父对象在Oracle DB VIEW中引用不可变的ChildObject：

1）在ParentObject中有一组ChildObjectInView，定义为不可变，没有级联：

<class name="ParentObject" table="t_parentobject">
...
    <set name="childObjectsInView" cascade="none" lazy="true" mutable="false">
        <key column="coivId" />
        <one-to-many class="com.it.ChildObjectInView"/>
    </set>      
</class>

2）ChildObjectInView被定义为

<class name="ChildObjectInView" table="view_coiv" mutable="false" lazy="true">
...
    <many-to-one name="parentObject" column="parentObjectId" update="false" insert="false" class="com.it.ParentObject" not-null="true" outer-join="true">
    </many-to-one>

</class>

调用com.it.TestServiceImpl。 saveParentObject（）会导致Oracle错误 ORA-01732：数据操作操作在此视图上不合法，尽管在该视图中有mutable =“false”属性已设置hibernate映射。为什么会出现这个错误？

com.it.TestBean|could not delete collection: [com.it.ParentObject.childObjectsInView#398500]
org.hibernate.exception.SQLGrammarException: could not delete collection: [com.it.ParentObject.childObjectsInView#398500]
        at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:67)
        at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
        at org.hibernate.persister.collection.AbstractCollectionPersister.remove(AbstractCollectionPersister.java:1071)
        at org.hibernate.action.CollectionRemoveAction.execute(CollectionRemoveAction.java:28)
        at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:248)
        at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:232)
        at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:141)
        at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298)
        at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
        at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
        at com.it.TestServiceImpl.saveParentObject(TestServiceImpl.java:418)

Caused by: java.sql.BatchUpdateException: ORA-01732: data manipulation operation not legal on this view
        at oracle.jdbc.driver.OraclePreparedStatement.executeBatch(OraclePreparedStatement.java:10296)
        at oracle.jdbc.driver.OracleStatementWrapper.executeBatch(OracleStatementWrapper.java:216)
        at org.apache.commons.dbcp.DelegatingStatement.executeBatch(DelegatingStatement.java:297)
        at org.apache.commons.dbcp.DelegatingStatement.executeBatch(DelegatingStatement.java:297)
        at org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:48)
        at org.hibernate.jdbc.BatchingBatcher.addToBatch(BatchingBatcher.java:34)
        at org.hibernate.persister.collection.AbstractCollectionPersister.remove(AbstractCollectionPersister.java:1048)
        ... 69 more

Answer 1

我终于发现，有些情况是ParentObject是新设置的，ParentObject.childObjectsInView集设置为null。

保存这个新创建的ParentObject Hibernate尝试运行DELETE FROM <view> WHERE id=<objectid>。此语句类似于ParentObject.childObjectsInView内的所有对象的重置。

我认为Hibernate的默认行为在这个地方是错误的，应该打开一个错误报告：Hibernate知道子进程是不可变的，所以任何操作SQL都应该被抑制。

解决方法：确保空集合始终设置为ParentObject.childObjectsInView（而不是null）。

Hibernate：java.sql.BatchUpdateException：ORA-01732在不可变视图上

1 个答案: