Hibernate連接表中的ConstraintViolationException

當我嘗試使用@OneToMany映射保存對象時，我正遇到ConstraintViolationException。 Hibernate或者似乎認爲我正在試圖將NULL放入映射列表中，或者它可能會將其置於本身。這個問題似乎偶爾發生：有些數據庫很容易重現，但是對於其他數據庫我根本無法完成。Hibernate連接表中的ConstraintViolationException

我在Hibernate和Hibernate Annotations中都是一個新手，所以任何幫助都會非常感謝。

我有兩個類：Camera和AlarmZone（它擴展了第三類Zone）。除此之外，Camera包含AlarmZone對象的ID列表。這裏的類聲明：

@Entity 
@Inheritance(strategy = InheritanceType.JOINED) 
@Table(name = "cameras") 
public class Camera 
{ 
    private Serializable id; 

    private List<Serializable> alarm_zones = new ArrayList<Serializable>(); 

    ... 

    @Id(generate = GeneratorType.SEQUENCE) 
    @Type(type = "java.lang.Long") 
    public java.io.Serializable getId() 
    { 
     return this.id; 
    } 

    public void setId(java.io.Serializable id) 
    { 
     this.id = id; 
    } 

    @OneToMany(targetEntity = java.lang.Long.class, fetch = FetchType.EAGER) 
    @JoinTable(table = @Table(name = "cameraalarmzones")) 
    public List<Serializable> getAlarmZones() 
    { 
     return alarm_zones; 
    } 

    public void setAlarmZones(List<Serializable> alarm_zones) 
    { 
     this.alarm_zones = alarm_zones; 
    } 

    ... 
} 

@Entity 
@Inheritance(strategy = InheritanceType.JOINED) 
@Table(name = "zones") 
public class Zone 
{ 
    private Serializable id; 

    ... 

    @Id(generate = GeneratorType.SEQUENCE) 
    @Type(type = "java.lang.Long") 
    public java.io.Serializable getId() 
    { 
     return this.id; 
    } 

    public void setId(java.io.Serializable id) 
    { 
     this.id = id; 
    } 
} 

@Entity 
@Table(name = "alarmzones") 
public class AlarmZone extends Zone 
{ 
    ... 
}

每當我保存對象，我用我的理解進行樣板提交代碼：

public Persistable makePersistent(Object entity) 
{ 
    try 
    { 
     Hibernate.getSession().beginTransaction(); 
     Hibernate.getSession().saveOrUpdate(entity); 
     Hibernate.getSession().flush(); 
     Hibernate.getSession().getTransaction().commit(); 
    } catch (RuntimeException e) 
    { 
     Hibernate.getSession().getTransaction().rollback(); 
     logger.error("makePersistent(" + entity.getClass().getSimpleName() 
       + ")", e); 
    } 
    return entity; 
}

當我保存的AlarmZone時出現的問題，然後將其ID爲相機列表並嘗試保存相機。爲了獲得更好的調試信息，我遵循了https://forum.hibernate.org/viewtopic.php?p=2220295&sid=a7ccc3be32137436c8062a99c8372a9e的建議，並將我的批處理大小設置爲0，並在log4j中打開了DEBUG級別的調試。下面是錯誤的堆棧跟蹤（與前面的幾行一起）：

[2009-10-23 14:33:07,606] DEBUG [http-8443-Processor25] (AbstractCollectionPersister.java:947) - Deleting collection: [x.y.z.Camera.alarmZones#641] 
[2009-10-23 14:33:07,606] DEBUG [http-8443-Processor25] (AbstractBatcher.java:311) - about to open PreparedStatement (open PreparedStatements: 0, globally: 0) 
[2009-10-23 14:33:07,606] DEBUG [http-8443-Processor25] (AbstractBatcher.java:346) - delete from cameraalarmzones where cameras_id=? 
[2009-10-23 14:33:07,606] DEBUG [http-8443-Processor25] (AbstractBatcher.java:424) - preparing statement 
[2009-10-23 14:33:07,606] DEBUG [http-8443-Processor25] (NullableType.java:79) - binding '641' to parameter: 1 
[2009-10-23 14:33:07,606] DEBUG [http-8443-Processor25] (AbstractCollectionPersister.java:977) - done deleting collection 
[2009-10-23 14:33:07,606] DEBUG [http-8443-Processor25] (AbstractCollectionPersister.java:999) - Inserting collection: [x.y.z.Camera.alarmZones#641] 
[2009-10-23 14:33:07,606] DEBUG [http-8443-Processor25] (AbstractBatcher.java:319) - about to close PreparedStatement (open PreparedStatements: 1, globally: 1) 
[2009-10-23 14:33:07,606] DEBUG [http-8443-Processor25] (AbstractBatcher.java:470) - closing statement 
[2009-10-23 14:33:07,606] DEBUG [http-8443-Processor25] (AbstractBatcher.java:311) - about to open PreparedStatement (open PreparedStatements: 0, globally: 0) 
[2009-10-23 14:33:07,622] DEBUG [http-8443-Processor25] (AbstractBatcher.java:346) - insert into cameraalarmzones (cameras_id, elt) values (?, ?) 
[2009-10-23 14:33:07,622] DEBUG [http-8443-Processor25] (AbstractBatcher.java:424) - preparing statement 
[2009-10-23 14:33:07,622] DEBUG [http-8443-Processor25] (NullableType.java:79) - binding '641' to parameter: 1 
[2009-10-23 14:33:07,622] DEBUG [http-8443-Processor25] (NullableType.java:79) - binding '649' to parameter: 2 
[2009-10-23 14:33:07,622] DEBUG [http-8443-Processor25] (AbstractBatcher.java:319) - about to close PreparedStatement (open PreparedStatements: 1, globally: 1) 
[2009-10-23 14:33:07,622] DEBUG [http-8443-Processor25] (AbstractBatcher.java:470) - closing statement 
[2009-10-23 14:33:07,637] DEBUG [http-8443-Processor25] (JDBCExceptionReporter.java:63) - could not insert collection: [x.y.z.Camera.alarmZones#641] [insert into cameraalarmzones (cameras_id, elt) values (?, ?)] 
java.sql.SQLException: Attempt to insert null into a non-nullable column: column: ALARMZONES table: CAMERAALARMZONES in statement [insert into cameraalarmzones (cameras_id, elt) values (?, ?)] 
    at org.hsqldb.jdbc.Util.throwError(Unknown Source) 
    at org.hsqldb.jdbc.jdbcPreparedStatement.executeUpdate(Unknown Source) 
    at org.hibernate.jdbc.NonBatchingBatcher.addToBatch(NonBatchingBatcher.java:23) 
    at org.hibernate.persister.collection.AbstractCollectionPersister.recreate(AbstractCollectionPersister.java:1039) 
    at org.hibernate.action.CollectionUpdateAction.execute(CollectionUpdateAction.java:51) 
    at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:243) 
    at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:227) 
    at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:143) 
    at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:296) 
    at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27) 
    at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:980) 
    at sun.reflect.GeneratedMethodAccessor56.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    at java.lang.reflect.Method.invoke(Method.java:597) 
    at org.hibernate.context.ThreadLocalSessionContext$TransactionProtectionWrapper.invoke(ThreadLocalSessionContext.java:292) 
    at $Proxy25.flush(Unknown Source) 
    at com.silkspeed.ssparts.server.PersistableDAOImpl.makePersistent(PersistableDAOImpl.java:82) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    at java.lang.reflect.Method.invoke(Method.java:597) 
    at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:292) 
    at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:155) 
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:122) 
    at org.springframework.remoting.support.RemoteInvocationTraceInterceptor.invoke(RemoteInvocationTraceInterceptor.java:68) 
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:144) 
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:174) 
    at $Proxy38.makePersistent(Unknown Source) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    at java.lang.reflect.Method.invoke(Method.java:597) 
    at org.springframework.remoting.support.RemoteInvocation.invoke(RemoteInvocation.java:179) 
    at org.springframework.remoting.support.DefaultRemoteInvocationExecutor.invoke(DefaultRemoteInvocationExecutor.java:33) 
    at org.springframework.remoting.support.RemoteInvocationBasedExporter.invoke(RemoteInvocationBasedExporter.java:76) 
    at org.springframework.remoting.support.RemoteInvocationBasedExporter.invokeAndCreateResult(RemoteInvocationBasedExporter.java:112) 
    at org.springframework.remoting.httpinvoker.HttpInvokerServiceExporter.handleRequest(HttpInvokerServiceExporter.java:80) 
    at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:44) 
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:684) 
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:625) 
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:392) 
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:357) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:710) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188) 
    at x.y.z.server.SessionInfo.doFilter(SessionInfo.java:91) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174) 
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:525) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151) 
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:874) 
    at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665) 
    at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528) 
    at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81) 
    at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689) 
    at java.lang.Thread.run(Thread.java:619) 
[2009-10-23 14:33:07,637] WARN [http-8443-Processor25] (JDBCExceptionReporter.java:71) - SQL Error: -10, SQLState: 23000 
[2009-10-23 14:33:07,637] ERROR [http-8443-Processor25] (JDBCExceptionReporter.java:72) - Attempt to insert null into a non-nullable column: column: ALARMZONES table: CAMERAALARMZONES in statement [insert into cameraalarmzones (cameras_id, elt) values (?, ?)] 
[2009-10-23 14:33:07,637] ERROR [http-8443-Processor25] (AbstractFlushingEventListener.java:299) - Could not synchronize database state with session 
org.hibernate.exception.ConstraintViolationException: could not insert collection: [x.y.z.Camera.alarmZones#641] 
    at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:69) 
    at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43) 
    at org.hibernate.persister.collection.AbstractCollectionPersister.recreate(AbstractCollectionPersister.java:1058) 
    at org.hibernate.action.CollectionUpdateAction.execute(CollectionUpdateAction.java:51) 
    at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:243) 
    at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:227) 
    at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:143) 
    at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:296) 
    at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27) 
    at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:980) 
    at sun.reflect.GeneratedMethodAccessor56.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    at java.lang.reflect.Method.invoke(Method.java:597) 
    at org.hibernate.context.ThreadLocalSessionContext$TransactionProtectionWrapper.invoke(ThreadLocalSessionContext.java:292) 
    at $Proxy25.flush(Unknown Source) 
    at com.silkspeed.ssparts.server.PersistableDAOImpl.makePersistent(PersistableDAOImpl.java:82) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    at java.lang.reflect.Method.invoke(Method.java:597) 
    at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:292) 
    at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:155) 
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:122) 
    at org.springframework.remoting.support.RemoteInvocationTraceInterceptor.invoke(RemoteInvocationTraceInterceptor.java:68) 
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:144) 
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:174) 
    at $Proxy38.makePersistent(Unknown Source) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    at java.lang.reflect.Method.invoke(Method.java:597) 
    at org.springframework.remoting.support.RemoteInvocation.invoke(RemoteInvocation.java:179) 
    at org.springframework.remoting.support.DefaultRemoteInvocationExecutor.invoke(DefaultRemoteInvocationExecutor.java:33) 
    at org.springframework.remoting.support.RemoteInvocationBasedExporter.invoke(RemoteInvocationBasedExporter.java:76) 
    at org.springframework.remoting.support.RemoteInvocationBasedExporter.invokeAndCreateResult(RemoteInvocationBasedExporter.java:112) 
    at org.springframework.remoting.httpinvoker.HttpInvokerServiceExporter.handleRequest(HttpInvokerServiceExporter.java:80) 
    at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:44) 
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:684) 
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:625) 
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:392) 
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:357) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:710) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188) 
    at x.y.z.server.SessionInfo.doFilter(SessionInfo.java:91) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174) 
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:525) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151) 
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:874) 
    at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665) 
    at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528) 
    at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81) 
    at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689) 
    at java.lang.Thread.run(Thread.java:619) 
Caused by: java.sql.SQLException: Attempt to insert null into a non-nullable column: column: ALARMZONES table: CAMERAALARMZONES in statement [insert into cameraalarmzones (cameras_id, elt) values (?, ?)] 
    at org.hsqldb.jdbc.Util.throwError(Unknown Source) 
    at org.hsqldb.jdbc.jdbcPreparedStatement.executeUpdate(Unknown Source) 
    at org.hibernate.jdbc.NonBatchingBatcher.addToBatch(NonBatchingBatcher.java:23) 
    at org.hibernate.persister.collection.AbstractCollectionPersister.recreate(AbstractCollectionPersister.java:1039) 
    ... 58 more 
[2009-10-23 14:33:07,637] DEBUG [http-8443-Processor25] (JDBCTransaction.java:152) - rollback 
[2009-10-23 14:33:07,637] DEBUG [http-8443-Processor25] (JDBCTransaction.java:193) - re-enabling autocommit 
[2009-10-23 14:33:07,637] DEBUG [http-8443-Processor25] (JDBCTransaction.java:163) - rolled back JDBC Connection 
[2009-10-23 14:33:07,637] DEBUG [http-8443-Processor25] (JDBCContext.java:207) - after transaction completion 
[2009-10-23 14:33:07,637] DEBUG [http-8443-Processor25] (ConnectionManager.java:296) - aggressively releasing JDBC connection 
[2009-10-23 14:33:07,637] DEBUG [http-8443-Processor25] (ConnectionManager.java:333) - closing JDBC connection [ (open PreparedStatements: 0, globally: 0) (open ResultSets: 0, globally: 0)] 
[2009-10-23 14:33:07,637] DEBUG [http-8443-Processor25] (DriverManagerConnectionProvider.java:129) - returning connection to pool, pool size: 1 
[2009-10-23 14:33:07,637] DEBUG [http-8443-Processor25] (SessionImpl.java:434) - after transaction completion 
[2009-10-23 14:33:07,637] DEBUG [http-8443-Processor25] (SessionImpl.java:368) - automatically closing session 
[2009-10-23 14:33:07,637] DEBUG [http-8443-Processor25] (SessionImpl.java:296) - closing session 
[2009-10-23 14:33:07,637] DEBUG [http-8443-Processor25] (ConnectionManager.java:267) - connection already null in cleanup : no action 
[2009-10-23 14:33:07,637] ERROR [http-8443-Processor25] (PersistableDAOImpl.java:87) - makePersistent(Camera) 
org.hibernate.exception.ConstraintViolationException: could not insert collection: [x.y.z.Camera.alarmZones#641] 
    at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:69) 
    at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43) 
    at org.hibernate.persister.collection.AbstractCollectionPersister.recreate(AbstractCollectionPersister.java:1058) 
    at org.hibernate.action.CollectionUpdateAction.execute(CollectionUpdateAction.java:51) 
    at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:243) 
    at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:227) 
    at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:143) 
    at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:296) 
    at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27) 
    at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:980) 
    at sun.reflect.GeneratedMethodAccessor56.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    at java.lang.reflect.Method.invoke(Method.java:597) 
    at org.hibernate.context.ThreadLocalSessionContext$TransactionProtectionWrapper.invoke(ThreadLocalSessionContext.java:292) 
    at $Proxy25.flush(Unknown Source) 
    at com.silkspeed.ssparts.server.PersistableDAOImpl.makePersistent(PersistableDAOImpl.java:82) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    at java.lang.reflect.Method.invoke(Method.java:597) 
    at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:292) 
    at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:155) 
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:122) 
    at org.springframework.remoting.support.RemoteInvocationTraceInterceptor.invoke(RemoteInvocationTraceInterceptor.java:68) 
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:144) 
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:174) 
    at $Proxy38.makePersistent(Unknown Source) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    at java.lang.reflect.Method.invoke(Method.java:597) 
    at org.springframework.remoting.support.RemoteInvocation.invoke(RemoteInvocation.java:179) 
    at org.springframework.remoting.support.DefaultRemoteInvocationExecutor.invoke(DefaultRemoteInvocationExecutor.java:33) 
    at org.springframework.remoting.support.RemoteInvocationBasedExporter.invoke(RemoteInvocationBasedExporter.java:76) 
    at org.springframework.remoting.support.RemoteInvocationBasedExporter.invokeAndCreateResult(RemoteInvocationBasedExporter.java:112) 
    at org.springframework.remoting.httpinvoker.HttpInvokerServiceExporter.handleRequest(HttpInvokerServiceExporter.java:80) 
    at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:44) 
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:684) 
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:625) 
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:392) 
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:357) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:710) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188) 
    at x.y.z.server.SessionInfo.doFilter(SessionInfo.java:91) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174) 
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:525) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151) 
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:874) 
    at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665) 
    at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528) 
    at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81) 
    at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689) 
    at java.lang.Thread.run(Thread.java:619) 
Caused by: java.sql.SQLException: Attempt to insert null into a non-nullable column: column: ALARMZONES table: CAMERAALARMZONES in statement [insert into cameraalarmzones (cameras_id, elt) values (?, ?)] 
    at org.hsqldb.jdbc.Util.throwError(Unknown Source) 
    at org.hsqldb.jdbc.jdbcPreparedStatement.executeUpdate(Unknown Source) 
    at org.hibernate.jdbc.NonBatchingBatcher.addToBatch(NonBatchingBatcher.java:23) 
    at org.hibernate.persister.collection.AbstractCollectionPersister.recreate(AbstractCollectionPersister.java:1039) 
    ... 58 more

這是我的休眠配置文件：

<property name="connection.driver_class">org.hsqldb.jdbcDriver</property> 
    <property name="connection.url">jdbc:hsqldb:file:dbfilename;shutdown=true</property> 
    <property name="connection.username">*************</property> 
    <property name="connection.password">*************</property> 
    <property name="connection.autocommit">true</property> 

    <!-- JDBC connection pool (use the built-in) --> 
    <property name="connection.pool_size">1</property> 

    <!-- SQL dialect --> 
    <property name="dialect">org.hibernate.dialect.HSQLDialect</property> 

    <!-- Enable Hibernate's automatic session context management --> 
    <property name="current_session_context_class">thread</property> 

    <!-- Disable the second-level cache --> 
    <property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property> 

    <!-- Echo all executed SQL to stdout --> 
    <property name="show_sql">false</property> 

<property name="hibernate.jdbc.batch_size">0</property> 
<property name="hibernate.jdbc.fetch_size">0</property> 

    <!-- Drop and re-create the database schema on startup --> 
<property name="hbm2ddl.auto">update</property> 


<mapping class="com.silkspeed.sightlogix.cs.AlarmZone"/> 
<mapping class="com.silkspeed.sightlogix.cs.Camera" /> 
<mapping class="com.silkspeed.sightlogix.cs.Zone"/> 

...

在此先感謝。

來源

2009-10-23 Seth

有幾個問題與您的代碼：

您已經聲明爲Serializable而非純long（或Long）IDS。爲什麼？
您應該映射實際的Zone（或AlarmZone如果需要）實例在OneToMany關係中而不是ids。不需要中間表，除非關係真的是ManyToMany，在這種情況下，它應該如此映射（可以將一個AlarmZone屬於多個Camera？如果是，則是多對多）。
您的Camera實體上有繼承註釋。爲什麼？它是另一個層次的一部分嗎？
您使用的「樣板」代碼很糟糕。交易應附上entire unit of work，而不是個別實體。明確的沖洗是不必要的。

樣品映射：在identifier mapping和association mapping

@Entity 
@Inheritance(strategy = InheritanceType.JOINED) 
@Table(name = "cameras") 
public class Camera { 
    private long id; 
    private List<AlarmZone> alarm_zones = new ArrayList<AlarmZone>(); 

    @SequenceGenerator(name="Camera_Gen", sequenceName="cameras_seq") 
    @Id @GeneratedValue(generator="Camera_Gen")  
    public long getId() { 
     return this.id; 
    } 

    @OneToMany(mappedBy="camera") // this maps a bi-directional relationship 
    public List<AlarmZone> getAlarmZones() { 
     return alarm_zones; 
    } 

    ... 
} 

@Entity 
@Inheritance(strategy = InheritanceType.JOINED) 
@Table(name = "zones") 
public class Zone { 
    // same deal as above 
    ... 
} 

@Entity 
@Table(name = "alarmzones") 
public class AlarmZone extends Zone { 
    private Camera camera; 

    @ManyToOne 
    public Camera getCamera() { 
    return this.camera; 
    } 
}

詳細信息。

來源

2009-10-23 21:28:14 ChssPly76

感謝您的提示。他們非常感謝。我絕對同意有一個實際的AlarmZone對象的列表是要走的路，但我沒有足夠的時間對代碼庫進行必要的更改。你有什麼想法可能會導致連接表插入異常嗎？ – Seth 2009-10-23 22:27:58

我並不是故意要這樣做，但如果你現在沒有時間做正確的事情，那麼以後如何才能找到時間（當你在這方面建立更多的東西的時候）？ AlarmZone ID的問題在於，Long不是一個實體;您不能將@id映射爲@OneToMany。映射它們的唯一方法是通過@CollectionOfElements - 例如，參見Hibernate Annotations文檔的2.4.6.2.5部分。 – ChssPly76 2009-10-23 22:58:33

不幸的是，有些情況是我無法控制的，它會阻止我現在正確地做到這一點（具體地說，重構代碼以包含完整的工作單元並更改Camera類以使實際的AlarmZones花費的時間比我的要多得多。那糟糕的樣板代碼遍佈整個應用程序）。 – Seth 2009-11-03 22:30:30

Hibernate連接表中的ConstraintViolationException

回答

相關問題