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| Re: [CDO] ClassCastException loading EJavaObject [message #1173601 is a reply to message #1173489] |
Wed, 06 November 2013 16:32   |
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Am 06.11.2013 16:04, schrieb Kyle B:
> Hello,
>
> I am looking for some help with a problem I am seeing when attempting to recall an EAttribute of type EJavaObject.
> I run the data store, then run my client application. I am able to create and persist the object to the database. I
> then shut down the client application and data store. I restart the data store and when I attempt to restart the
> client application I get the following exception:
>
> java.lang.ClassCastException: [B cannot be cast to java.lang.String
> at org.eclipse.emf.cdo.internal.common.model.CDOTypeImpl$26.doWriteValue(CDOTypeImpl.java:558)
> at org.eclipse.emf.cdo.internal.common.model.CDOTypeImpl$ObjectType.writeValue(CDOTypeImpl.java:1028)
> at org.eclipse.emf.cdo.spi.common.protocol.CDODataOutputImpl.writeCDOFeatureValue(CDODataOutputImpl.java:491)
> at org.eclipse.emf.cdo.spi.common.revision.BaseCDORevision.writeValues(BaseCDORevision.java:918)
> at org.eclipse.emf.cdo.spi.common.revision.BaseCDORevision.write(BaseCDORevision.java:239)
> at org.eclipse.emf.cdo.spi.common.protocol.CDODataOutputImpl.writeCDORevision(CDODataOutputImpl.java:381)
> at org.eclipse.emf.cdo.spi.common.revision.RevisionInfo.writeRevision(RevisionInfo.java:221)
> at org.eclipse.emf.cdo.spi.common.revision.RevisionInfo.writeResult(RevisionInfo.java:159)
> at
> org.eclipse.emf.cdo.server.internal.net4j.protocol.LoadRevisionsIndication.responding(LoadRevisionsIndication.java:188)
> at org.eclipse.emf.cdo.server.internal.net4j.protocol.CDOServerIndication.responding(CDOServerIndication.java:133)
> at org.eclipse.net4j.signal.IndicationWithResponse.doExtendedOutput(IndicationWithResponse.java:98)
> at org.eclipse.net4j.signal.Signal.doOutput(Signal.java:298)
> at org.eclipse.net4j.signal.IndicationWithResponse.execute(IndicationWithResponse.java:67)
> at org.eclipse.emf.cdo.server.internal.net4j.protocol.CDOServerReadIndication.execute(CDOServerReadIndication.java:36)
> at org.eclipse.net4j.signal.Signal.runSync(Signal.java:253)
> at org.eclipse.net4j.signal.Signal.run(Signal.java:149)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:724)
>
> When inspecting the error, I can see that the byte[] extracted from the blob field is trying to be cast to a string.
>
> Am I doing something incorrectly when setting the value to this EJavaObject EAttribute or is this a bug?
What CDO version are you using? EJavaObject serialization support has been added in 4.2:
/**
* @since 4.2
*/
public static final CDOType JAVA_OBJECT = org.eclipse.emf.cdo.internal.common.model.CDOTypeImpl.JAVA_OBJECT;
Cheers
/Eike
----
http://www.esc-net.de
http://thegordian.blogspot.com
http://twitter.com/eikestepper
Cheers
/Eike
----
http://www.esc-net.de
http://thegordian.blogspot.com
http://twitter.com/eikestepper
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