[jacorb-developer] Bad type on operand stack error when using JacORB and JBoss modules

[Rob Ratcliff]

I tried

mvn clean install -Dno-rmi=true -DskipTests=true
(I don't think no-rmi does anything.)

but I still get error when loading the jar files from my plugin:
Bad type on operand stack
Exception Details:
  Location:
   
org/jacorb/orb/Delegate.getReference(Lorg/jacorb/poa/POA;)Lorg/omg/CORBA/portable/ObjectImpl;
@100: invokevirtual
  Reason:
    Type 'org/jacorb/orb/Reference' (current frame, stack[0]) is not
assignable to 'org/omg/CORBA/portable/ObjectImpl'
  Current Frame:
    bci: @100
    flags: { }
    locals: { 'org/jacorb/orb/Delegate', 'org/jacorb/poa/POA',
'java/lang/String', 'org/jacorb/orb/Reference' }
    stack: { 'org/jacorb/orb/Reference', 'org/jacorb/orb/Delegate' }

If I put jacorb.jar and jacorb-omgapi.jar in a separate JBoss module, I
get this error:
loader constraint violation: loader (instance of <bootloader>)
previously initiated loading for a different type with name "or
g/omg/CORBA/Object"
java.lang.LinkageError: loader constraint violation: loader (instance of
<bootloader>) previously initiated loading for a different
type with name "org/omg/CORBA/Object"
        at java.lang.ClassLoader.findBootstrapClass(Native Method)
        at
java.lang.ClassLoader.findBootstrapClassOrNull(ClassLoader.java:1015)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:413)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:411)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
It'd be nice to be able to build JacORB  with no dependencies on the JDK
and no conflicting class names or build it with no duplicate of classes
in the JDK.
Too bad the OMG isn't modernizing the Java bindings and life-cycle as
well. This is a PTA.

This developer had a good explanation of what's going on:
http://apache-felix.18485.x6.nabble.com/Bundelizing-Jacorb-getting-screwed-tp4843264p4843268.html

Thanks,

Rob




On 4/22/2017 8:15 PM, Rob Ratcliff wrote:
> Hi ,
>
> I found this old article on reworking JacORB to work with Felix by
> compiling without RMI support using -Dno-rmi=true.
>
> http://apache-felix.18485.x6.nabble.com/Bundelizing-Jacorb-getting-screwed-tp4843264p4843270.html
>
> What's the equivalent maven command to do this?
>
> Any advice on this?
>
> Rob
>
>
> On 4/19/2017 4:07 PM, Rob Ratcliff wrote:
>> Hi,
>>
>> I am using a GUI framework that use JBoss modules to manage plugins. My
>> plugin has a dependency on JacORB. I'm using the classloader for my
>> plugin by setting
>> Thread.getCurrentThread().setContextClassLoader(this.getClass().getClassLoader());
>> and I set the tccl property in JacORB
>> (System.setProperty("jacorb.classloaderpolicy", "tccl");
>>
>> Any ideas for resolving the Bad type on operand stack error in the stack
>> trace below? Is there any way to eliminate the dependency on the JDK's
>> CORBA classes?
>>
>> Thanks,
>>
>> Rob
>>
>>
>> 19 Apr 2017 15:58:10,264  WARN [AWT-EventQueue-0] (singleton:208) -
>> Warning - unknown codeset (Cp1252) - defaulting to ISO-8859-1
>> 19 Apr 2017 15:58:10,266  WARN [AWT-EventQueue-0] (orb:208) - Warning -
>> unknown codeset (Cp1252) - defaulting to ISO-8859-1
>> 19 Apr 2017 15:58:10,939 ERROR [AWT-EventQueue-0] (RaptorUEHandler:14) -
>> Thread unexpectedly terminated with exception: AWT-EventQue
>> ue-0, Bad type on operand stack
>> Exception Details:
>>   Location:
>>    
>> org/jacorb/orb/Delegate.getReference(Lorg/jacorb/poa/POA;)Lorg/omg/CORBA/portable/ObjectImpl;
>> @42: invokevirtual
>>   Reason:
>>     Type 'org/jacorb/orb/Reference' (current frame, stack[0]) is not
>> assignable to 'org/omg/CORBA/portable/ObjectImpl'
>>   Current Frame:
>>     bci: @42
>>     flags: { }
>>     locals: { 'org/jacorb/orb/Delegate', 'org/jacorb/poa/POA',
>> 'java/lang/String', 'org/jacorb/orb/Reference' }
>>     stack: { 'org/jacorb/orb/Reference', 'org/jacorb/orb/Delegate' }
>>   Bytecode:
>>     0x0000000: 2bc6 0008 2a2b b500 e72a b400 10c7 000a
>>     0x0000010: 2ab6 00e8 a700 0a2a b400 10b4 00e9 4dbb
>>     0x0000020: 00ea 592c b700 eb4e 2d2a b600 ec2d b0
>>   Stackmap Table:
>>     same_frame(@9)
>>     same_frame(@23)
>>     same_locals_1_stack_item_frame(@30,Object[#675])
>>
>> java.lang.VerifyError: Bad type on operand stack
>> Exception Details:
>>   Location:
>>    
>> org/jacorb/orb/Delegate.getReference(Lorg/jacorb/poa/POA;)Lorg/omg/CORBA/portable/ObjectImpl;
>> @42: invokevirtual
>>   Reason:
>>     Type 'org/jacorb/orb/Reference' (current frame, stack[0]) is not
>> assignable to 'org/omg/CORBA/portable/ObjectImpl'
>>   Current Frame:
>>     bci: @42
>>     flags: { }
>>     locals: { 'org/jacorb/orb/Delegate', 'org/jacorb/poa/POA',
>> 'java/lang/String', 'org/jacorb/orb/Reference' }
>>     stack: { 'org/jacorb/orb/Reference', 'org/jacorb/orb/Delegate' }
>>   Bytecode:
>>     0x0000000: 2bc6 0008 2a2b b500 e72a b400 10c7 000a
>>     0x0000010: 2ab6 00e8 a700 0a2a b400 10b4 00e9 4dbb
>>     0x0000020: 00ea 592c b700 eb4e 2d2a b600 ec2d b0
>>   Stackmap Table:
>>     same_frame(@9)
>>     same_frame(@23)
>>     same_locals_1_stack_item_frame(@30,Object[#675])
>>
>>         at org.jacorb.orb.ORB._getDelegate(ORB.java:586)
>>         at org.jacorb.orb.ORB.string_to_object(ORB.java:2466)
>> _______________________________________________
>> jacorb-developer maillist  -  jacorb-developer at lists.spline.inf.fu-berlin.de
>> https://lists.spline.inf.fu-berlin.de/mailman/listinfo/jacorb-developer
>>
>


-- 
Rob Ratcliff
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