I was getting the following Exception, which did not make sense as the deSerialization test passed OK.
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| org.springframework.orm.hibernate3.HibernateSystemException: could not deserialize; nested exception is org.hibernate.type.SerializationException: could not deserialize | |
| at org.springframework.orm.hibernate3.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:692) | |
| at org.springframework.orm.hibernate3.HibernateAccessor.convertHibernateAccessException(HibernateAccessor.java:412) |
I have a domain object that I had proved through a unit test that I could serialize & deserialize successfully.
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| @Test | |
| public void testDeserialize() throws Exception | |
| { | |
| CrmConfirmationReference srcRef = createConfirmationRef(); | |
| byte[] copy = SerializationUtils.serialize(srcRef); | |
| CrmConfirmationReference deSerialized = (CrmConfirmationReference)SerializationUtils.deserialize(copy); | |
| assertEquals("Oooops, not the same", srcRef), deSerialized); | |
| } |
My domain object contained the following object which if I removed then worked OK:
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| @Cascade({CascadeType.SAVE_UPDATE, CascadeType.DELETE}) | |
| @JoinColumns({ | |
| @JoinColumn(name = "MPRN", nullable = false), | |
| @JoinColumn(name = "EFFECTIVE_FROM", nullable = false) | |
| }) | |
| @NotNull | |
| public CrmMprn getMprn() | |
| { | |
| return mprn; | |
| } |
But tomcat & my integration test were both failing with the following Exception.
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| org.springframework.orm.hibernate3.HibernateSystemException: could not deserialize; nested exception is org.hibernate.type.SerializationException: could not deserialize | |
| at org.springframework.orm.hibernate3.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:692) | |
| at org.springframework.orm.hibernate3.HibernateAccessor.convertHibernateAccessException(HibernateAccessor.java:412) | |
| at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:412) | |
| at org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:375) | |
| at org.springframework.orm.hibernate3.HibernateTemplate.loadAll(HibernateTemplate.java:585) | |
| at uk.co.utilisoft.crm350.dao.CrmGenericDao$1.doInHibernate(CrmGenericDao.java:82) | |
| at uk.co.utilisoft.crm350.dao.CrmGenericDao$1.doInHibernate(CrmGenericDao.java:1) | |
| at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:407) | |
| at org.springframework.orm.hibernate3.HibernateTemplate.execute(HibernateTemplate.java:339) | |
| at uk.co.utilisoft.crm350.dao.CrmGenericDao.getAll(CrmGenericDao.java:78) | |
| at uk.co.utilisoft.crm350.dao.CrmConfirmationReferenceIntegrationTest.testSerialize(CrmConfirmationReferenceIntegrationTest.java:26) | |
| at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) | |
| at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) | |
| at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) | |
| at java.lang.reflect.Method.invoke(Method.java:606) | |
| at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47) | |
| at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) | |
| at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44) | |
| at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) | |
| at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:74) | |
| at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:83) | |
| at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:72) | |
| at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:231) | |
| at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:88) | |
| at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238) | |
| at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63) | |
| at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236) | |
| at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53) | |
| at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229) | |
| at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) | |
| at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71) | |
| at org.junit.runners.ParentRunner.run(ParentRunner.java:309) | |
| at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:174) | |
| at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50) | |
| at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) | |
| at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) | |
| at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) | |
| at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) | |
| at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197) | |
| Caused by: org.hibernate.type.SerializationException: could not deserialize | |
| at org.hibernate.util.SerializationHelper.doDeserialize(SerializationHelper.java:262) | |
| at org.hibernate.util.SerializationHelper.deserialize(SerializationHelper.java:306) | |
| at org.hibernate.type.descriptor.java.SerializableTypeDescriptor.fromBytes(SerializableTypeDescriptor.java:130) | |
| at org.hibernate.type.descriptor.java.SerializableTypeDescriptor.wrap(SerializableTypeDescriptor.java:116) | |
| at org.hibernate.type.descriptor.java.SerializableTypeDescriptor.wrap(SerializableTypeDescriptor.java:39) | |
| at org.hibernate.type.descriptor.sql.VarbinaryTypeDescriptor$2.doExtract(VarbinaryTypeDescriptor.java:62) | |
| at org.hibernate.type.descriptor.sql.BasicExtractor.extract(BasicExtractor.java:64) | |
| at org.hibernate.type.AbstractStandardBasicType.nullSafeGet(AbstractStandardBasicType.java:253) | |
| at org.hibernate.type.AbstractStandardBasicType.nullSafeGet(AbstractStandardBasicType.java:249) | |
| at org.hibernate.type.AbstractStandardBasicType.nullSafeGet(AbstractStandardBasicType.java:229) | |
| at org.hibernate.type.AbstractStandardBasicType.hydrate(AbstractStandardBasicType.java:330) | |
| at org.hibernate.persister.entity.AbstractEntityPersister.hydrate(AbstractEntityPersister.java:2283) | |
| at org.hibernate.loader.Loader.loadFromResultSet(Loader.java:1527) | |
| at org.hibernate.loader.Loader.instanceNotYetLoaded(Loader.java:1455) | |
| at org.hibernate.loader.Loader.getRow(Loader.java:1355) | |
| at org.hibernate.loader.Loader.getRowFromResultSet(Loader.java:611) | |
| at org.hibernate.loader.Loader.doQuery(Loader.java:829) | |
| at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:274) | |
| at org.hibernate.loader.Loader.doList(Loader.java:2533) | |
| at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2276) | |
| at org.hibernate.loader.Loader.list(Loader.java:2271) | |
| at org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:119) | |
| at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1716) | |
| at org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:347) | |
| at org.springframework.orm.hibernate3.HibernateTemplate$5.doInHibernate(HibernateTemplate.java:591) | |
| at org.springframework.orm.hibernate3.HibernateTemplate$5.doInHibernate(HibernateTemplate.java:585) | |
| at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:407) | |
| ... 36 more | |
| Caused by: java.io.StreamCorruptedException: invalid stream header: 31323334 | |
| at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:804) | |
| at java.io.ObjectInputStream.<init>(ObjectInputStream.java:299) | |
| at org.hibernate.util.SerializationHelper$CustomObjectInputStream.<init>(SerializationHelper.java:328) |
It turns out I had missed out an annotation, obvious really but I could not spot the error & the Exception was totally misleading. What had I missed? The '@manyToOne' annotation. Twit.
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| @ManyToOne(fetch = FetchType.LAZY) | |
| @Cascade({CascadeType.SAVE_UPDATE, CascadeType.DELETE}) | |
| @JoinColumns({ | |
| @JoinColumn(name = "MPRN", nullable = false), | |
| @JoinColumn(name = "EFFECTIVE_FROM", nullable = false) | |
| }) | |
| @NotNull | |
| public CrmMprn getMprn() | |
| { | |
| return mprn; | |
| } |
