[hibernate-dev] object is not an instance of declaring class

[Sanne Grinovero]

Emmanuel,
now I'm failing org.hibernate.search.test.proxy.ProxyTest.testDeteleProxy()
as it actually succedes but it is annotated as

@FailureExpected(jiraKey = "HSEARCH-577")

so it seems I've actually fixed the non-resolved HSEARCH-577, is
that a correct interpretation of this unit test?

Sanne

2010/12/1 Sanne Grinovero <sanne.grinovero at gmail.com>:
> thank you, "unproxy" worked great. Not sure why it wasn't there
> already as I didn't change this area, apparently it was unlikely to
> receive a proxy in this method.
> Sanne
>
> 2010/12/1 Emmanuel Bernard <emmanuel at hibernate.org>:
>> This exception in general can have a bunch of causes.
>>
>> In you case though, in Hibernate Search there are several tools at your disposal. All in HibernateHelper.
>> For the most part they abstract away Hibernate calls for when we will make Hibernate Search fully independent of Hibernate Core.
>>
>> unproxy: returns this or the underlying implementation behind the proxy (could initialize the proxy by side effect)
>> getClass: returns the entity class (even in case of proxies)
>> initialize: intialize the proxy or the collection
>> isInitialized: returns true if the proxy or the collection is initialized
>> getClassFromWork: returns the entity class for a given work (probably should be put somewhere else when we abstract Hibernate truly.
>>
>> Emmanuel
>>
>> On 30 nov. 2010, at 21:20, Sanne Grinovero wrote:
>>
>>> Hello,
>>> I'm blocked by the exception mentioned in the subject, this is also
>>> affecting my work in Search:
>>> with the new design I need the object identifier more often than before, and
>>> even our own org.hibernate.search.test.proxy.ProxyTest fails.
>>>
>>> Searching for similar exceptions I found many users asking for help
>>> about the same error, also some
>>> comments are quite recent so it would be nice to find a general solution:
>>>
>>> HHH-5280
>>> HHH-3399
>>> HHH-1953
>>> HHH-4064
>>> https://forum.hibernate.org/viewtopic.php?t=979408
>>>
>>> The error is that I'm invoking getId() via reflection, but the entity
>>> instance is actually a javassist proxy.
>>>
>>> Shouldn't org.hibernate.annotations.common.reflection.java.JavaXProperty
>>> "shield" our code from this kind
>>> of complexities?
>>>
>>> Suggestions to proceed?
>>> Sanne
>>>
>>> stacktrace follows:
>>>
>>> org.hibernate.HibernateException: Error while indexing in Hibernate
>>> Search (before transaction completion)
>>>       at org.hibernate.search.backend.impl.EventSourceTransactionContext$DelegateToSynchronizationOnBeforeTx.doBeforeTransactionCompletion(EventSourceTransactionContext.java:175)
>>>       at org.hibernate.engine.ActionQueue$BeforeTransactionCompletionProcessQueue.beforeTransactionCompletion(ActionQueue.java:543)
>>>       at org.hibernate.engine.ActionQueue.beforeTransactionCompletion(ActionQueue.java:216)
>>>       at org.hibernate.impl.SessionImpl.beforeTransactionCompletion(SessionImpl.java:571)
>>>       at org.hibernate.jdbc.JDBCContext.beforeTransactionCompletion(JDBCContext.java:250)
>>>       at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:138)
>>>       at org.hibernate.search.test.proxy.ProxyTest.testProxy(ProxyTest.java:63)
>>>       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 junit.framework.TestCase.runTest(TestCase.java:154)
>>>       at org.hibernate.testing.junit.functional.annotations.HibernateTestCase.runTest(HibernateTestCase.java:97)
>>>       at org.hibernate.testing.junit.functional.annotations.HibernateTestCase.runBare(HibernateTestCase.java:85)
>>>       at junit.framework.TestResult$1.protect(TestResult.java:106)
>>>       at junit.framework.TestResult.runProtected(TestResult.java:124)
>>>       at junit.framework.TestResult.run(TestResult.java:109)
>>>       at junit.framework.TestCase.run(TestCase.java:118)
>>>       at junit.framework.TestSuite.runTest(TestSuite.java:208)
>>>       at junit.framework.TestSuite.run(TestSuite.java:203)
>>>       at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:130)
>>>       at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
>>>       at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
>>>       at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
>>>       at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
>>>       at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
>>> Caused by: java.lang.IllegalStateException: Could not get property value
>>>       at org.hibernate.search.util.ReflectionHelper.getMemberValue(ReflectionHelper.java:94)
>>>       at org.hibernate.search.engine.DocumentBuilderIndexedEntity.getIndexingId(DocumentBuilderIndexedEntity.java:699)
>>>       at org.hibernate.search.engine.WorkPlan$PerClassWork.recurseContainedIn(WorkPlan.java:136)
>>>       at org.hibernate.search.engine.WorkPlan.recurseContainedIn(WorkPlan.java:69)
>>>       at org.hibernate.search.engine.AbstractDocumentBuilder.processSingleContainedInInstance(AbstractDocumentBuilder.java:773)
>>>       at org.hibernate.search.engine.AbstractDocumentBuilder.processContainedInInstances(AbstractDocumentBuilder.java:322)
>>>       at org.hibernate.search.engine.WorkPlan$PerEntityWork.processContainedIn(WorkPlan.java:268)
>>>       at org.hibernate.search.engine.WorkPlan$PerClassWork.processContainedIn(WorkPlan.java:130)
>>>       at org.hibernate.search.engine.WorkPlan.processContainedIn(WorkPlan.java:62)
>>>       at org.hibernate.search.backend.impl.BatchedQueueingProcessor.prepareWorks(BatchedQueueingProcessor.java:150)
>>>       at org.hibernate.search.backend.impl.PostTransactionWorkQueueSynchronization.beforeCompletion(PostTransactionWorkQueueSynchronization.java:86)
>>>       at org.hibernate.search.backend.impl.EventSourceTransactionContext$DelegateToSynchronizationOnBeforeTx.doBeforeTransactionCompletion(EventSourceTransactionContext.java:172)
>>>       ... 25 more
>>> Caused by: java.lang.IllegalArgumentException: Invoking id with wrong parameters
>>>       at org.hibernate.annotations.common.reflection.java.JavaXProperty.invoke(JavaXProperty.java:84)
>>>       at org.hibernate.search.util.ReflectionHelper.getMemberValue(ReflectionHelper.java:91)
>>>       ... 36 more
>>> Caused by: java.lang.IllegalArgumentException: object is not an
>>> instance of declaring class
>>>       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.hibernate.annotations.common.reflection.java.JavaXProperty.invoke(JavaXProperty.java:74)
>>>       ... 37 more
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>>
>>
>