[jboss-jira] [JBoss JIRA] Created: (JBSER-118) java.lang.ClassCastException: org.jboss.serial.finalcontainers.IntegerContainer incompatible with org.jboss.serial.finalcontainers.FloatContainer java.util.Properties IBM AIX JDK 1.5_10

Rene Felder (JIRA) jira-events at lists.jboss.org
Wed Sep 30 04:53:49 EDT 2009 

java.lang.ClassCastException: org.jboss.serial.finalcontainers.IntegerContainer incompatible with org.jboss.serial.finalcontainers.FloatContainer java.util.Properties IBM AIX JDK 1.5_10
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

                 Key: JBSER-118
                 URL: https://jira.jboss.org/jira/browse/JBSER-118
             Project: JBoss Serialization
          Issue Type: Bug
    Affects Versions: 1.0.3 GA
         Environment: AIX 5.3.0.0

java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build pap32dev-20090707 (SR10 ))
IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 AIX ppc-32 j9vmap3223-20090707 (JIT enabled)
J9VM - 20090706_38445_bHdSMr
JIT  - 20090623_1334_r8
GC   - 200906_09)
JCL  - 20090705
            Reporter: Rene Felder
            Assignee: Clebert Suconic


There is a problem using the jboss-serialization when upgrading from JDK 1.5_08 to JDK 1.5_10 on AIX. jboss-serialization wants to read a float but gets an integer (see Stacktrace). The problem only occurs if we use a java.util.Properties Class within an EJB 3 Call. If we remove the java.util.Properties everything works fine. 

When digging into the source code we found out that the problem occurs because java.util.Properties derives from java.util.Hashtable where jboss-serialization tries to read the two instanz variables loadFactor and threshold. Threshold is an integer and loadFactor is a float. It seems that they are swapped. So when reading the loadFactor we get an Integer value instead of a float value. 

It seems that the problem occurs in the Reflection Mechanism of the JDK. The order in which Properties are returned from a class does not seem to be constant when writting and reading. 


2009-09-30 00:58:39,039 DEBUG [org.jboss.serial.persister.RegularObjectPersister] FieldName on Read=domains
2009-09-30 00:58:39,039 DEBUG [org.jboss.serial.persister.RegularObjectPersister] readSlotWithFields slot=at.sozvers.stp.esv.cms.service.config.Configuration field=domains<<-reading Object
2009-09-30 00:58:39,039 DEBUG [org.jboss.serial.objectmetamodel.ObjectDescriptorFactory] objectFromDescription::reading new definition
2009-09-30 00:58:39,040 DEBUG [org.jboss.serial.objectmetamodel.ObjectDescriptorFactory] Reading object for id=3 classLoader=org.jboss.web.tomcat.service.WebCtxLoader$ENCLoader at 5ae45ae4 className =
 java.util.Properties
2009-09-30 00:58:39,040 DEBUG [org.jboss.serial.persister.RegularObjectPersister] defaultRead::class java.util.Properties contains 2 slots
2009-09-30 00:58:39,040 DEBUG [org.jboss.serial.persister.RegularObjectPersister] defaultRead::slot[0]=java.util.Hashtable
2009-09-30 00:58:39,040 DEBUG [org.jboss.serial.persister.RegularObjectPersister] readSlotWithMethod slot=java.util.Hashtable
2009-09-30 00:58:39,040 DEBUG [org.jboss.serial.persister.RegularObjectPersister] readSlotWithFields slot=java.util.Hashtable
2009-09-30 00:58:39,040 DEBUG [org.jboss.serial.persister.RegularObjectPersister] FieldName on Read=loadFactor

java.io.IOException
        at org.jboss.serial.persister.RegularObjectPersister.readSlotWithMethod(RegularObjectPersister.java:107)
        at org.jboss.serial.persister.RegularObjectPersister.defaultRead(RegularObjectPersister.java:269)
        at org.jboss.serial.persister.RegularObjectPersister.readData(RegularObjectPersister.java:241)
        at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.readObjectDescriptionFromStreaming(ObjectDescriptorFactory.java:412)
        at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.objectFromDescription(ObjectDescriptorFactory.java:82)
        at org.jboss.serial.objectmetamodel.DataContainer$DataContainerInput.readObject(DataContainer.java:845)
        at org.jboss.serial.persister.RegularObjectPersister.readSlotWithFields(RegularObjectPersister.java:353)
        at org.jboss.serial.persister.RegularObjectPersister.defaultRead(RegularObjectPersister.java:273)
        at org.jboss.serial.persister.RegularObjectPersister.readData(RegularObjectPersister.java:241)
        at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.readObjectDescriptionFromStreaming(ObjectDescriptorFactory.java:412)
        at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.objectFromDescription(ObjectDescriptorFactory.java:82)
        at org.jboss.serial.objectmetamodel.DataContainer$DataContainerInput.readObject(DataContainer.java:845)
        at org.jboss.serial.io.MarshalledObjectForLocalCalls.get(MarshalledObjectForLocalCalls.java:60)
        at org.jboss.ejb3.remoting.IsLocalInterceptor.invokeLocal(IsLocalInterceptor.java:96)
        at org.jboss.ejb3.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:72)
        at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
        at org.jboss.ejb3.stateless.StatelessRemoteProxy.invoke(StatelessRemoteProxy.java:107)
        ... 227 more
Caused by:
java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:618)
        at org.jboss.serial.persister.RegularObjectPersister.readSlotWithMethod(RegularObjectPersister.java:103)
        ... 243 more
Caused by:
org.jboss.serial.exception.SerializationException: Excepted to be float
        at org.jboss.serial.objectmetamodel.DataContainer$DataContainerInput.readFloat(DataContainer.java:1080)
        at org.jboss.serial.persister.RegularObjectPersister.readSlotWithFields(RegularObjectPersister.java:325)
        at org.jboss.serial.persister.ObjectInputStreamProxy.defaultReadObject(ObjectInputStreamProxy.java:78)
        at java.util.Hashtable.readObject(Hashtable.java:770)
        ... 248 more
Caused by:
java.lang.ClassCastException: org.jboss.serial.finalcontainers.IntegerContainer incompatible with org.jboss.serial.finalcontainers.FloatContainer
        at org.jboss.serial.objectmetamodel.DataContainer$DataContainerInput.readFloat(DataContainer.java:1076)
        ... 251 more


-- 
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira

More information about the jboss-jira mailing list