1 Reply Latest reply on Oct 7, 2010 1:29 AM by aguizar

    JBPM 4.4 Tomcat JNDI ProcessEngine Exception.

    antonio.pagano
    antonio.pagano Sep 23, 2010 6:10 PM

      Hi,

       

      I wrote a Factory for my using JBPM 4.4 ProcessEngine as a JNDI resource in Tomcat like this,

      ...

      public class ProcessEngineFactory implements ObjectFactory {

       

          public Object getObjectInstance(Object obj, Name name, Context nameCtx, Hashtable<?, ?> environment) throws Exception {

              return Configuration.getProcessEngine();

          }

      }

       

      Im start my Tomcat and everithing goes great, but when another application needs to find anyone of the services

      inside the ProcessEngineImpl (lets say RepositoryService) , i get this exception :

      ...

       

      Caused by: org.jbpm.pvm.internal.wire.WireException: couldn't set commandService to org.jbpm.pvm.internal.svc.SkipInterceptor@2e8e96cd

      at org.jbpm.pvm.internal.wire.operation.FieldOperation.apply(FieldOperation.java:48)

      at org.jbpm.pvm.internal.wire.descriptor.ObjectDescriptor.initialize(ObjectDescriptor.java:230)

      ... 25 more

      Caused by: org.jbpm.api.JbpmException: couldn't set 'commandService' to 'org.jbpm.pvm.internal.svc.SkipInterceptor@2e8e96cd'

      at org.jbpm.pvm.internal.util.ReflectUtil.set(ReflectUtil.java:170)

      at org.jbpm.pvm.internal.wire.operation.FieldOperation.apply(FieldOperation.java:46)

      ... 26 more

      Caused by: java.lang.IllegalArgumentException: Can not set org.jbpm.pvm.internal.cmd.CommandService field org.jbpm.pvm.internal.svc.AbstractServiceImpl.commandService to org.jbpm.pvm.internal.svc.SkipInterceptor

      at org.jbpm.pvm.internal.util.ReflectUtil.set(ReflectUtil.java:168)

      ... 27 more

      ...

       

      Please any help you can give me arround this topic is great received.

       

      Thanks in advance,

       

      Antonio

      Caused by: org.jbpm.pvm.internal.wire.WireException: couldn't set commandService to org.jbpm.pvm.internal.svc.SkipInterceptor@2e8e96cd
      at org.jbpm.pvm.internal.wire.operation.FieldOperation.apply(FieldOperation.java:48)
      at org.jbpm.pvm.internal.wire.descriptor.ObjectDescriptor.initialize(ObjectDescriptor.java:230)
      ... 25 more
      Caused by: org.jbpm.api.JbpmException: couldn't set 'commandService' to 'org.jbpm.pvm.internal.svc.SkipInterceptor@2e8e96cd'
      at org.jbpm.pvm.internal.util.ReflectUtil.set(ReflectUtil.java:170)
      at org.jbpm.pvm.internal.wire.operation.FieldOperation.apply(FieldOperation.java:46)
      ... 26 more
      Caused by: java.lang.IllegalArgumentException: Can not set org.jbpm.pvm.internal.cmd.CommandService field org.jbpm.pvm.internal.svc.AbstractServiceImpl.commandService to org.jbpm.pvm.internal.svc.SkipInterceptor
      at org.jbpm.pvm.internal.util.ReflectUtil.set(ReflectUtil.java:168)
      ... 27 Caused by: org.jbpm.pvm.internal.wire.WireException: couldn't set commandService to org.jbpm.pvm.internal.svc.SkipInterceptor@2e8e96cd
      at org.jbpm.pvm.internal.wire.operation.FieldOperation.apply(FieldOperation.java:48)
      at org.jbpm.pvm.internal.wire.descriptor.ObjectDescriptor.initialize(ObjectDescriptor.java:230)
      ... 25 more
      Caused by: org.jbpm.api.JbpmException: couldn't set 'commandService' to 'org.jbpm.pvm.internal.svc.SkipInterceptor@2e8e96cd'
      at org.jbpm.pvm.internal.util.ReflectUtil.set(ReflectUtil.java:170)
      at org.jbpm.pvm.internal.wire.operation.FieldOperation.apply(FieldOperation.java:46)
      ... 26 more
      Caused by: java.lang.IllegalArgumentException: Can not set org.jbpm.pvm.internal.cmd.CommandService field org.jbpm.pvm.internal.svc.AbstractServiceImpl.commandService to org.jbpm.pvm.internal.svc.SkipInterceptor
      at org.jbpm.pvm.internal.util.ReflectUtil.set(ReflectUtil.java:168)
      ... 27 more

        • 1. Re: JBPM 4.4 Tomcat JNDI ProcessEngine Exception.
          aguizar
          aguizar Oct 7, 2010 1:29 AM (in response to antonio.pagano)

          Custom Tomcat resource factories have been discussed in the past, you might want to read the comments on the subject. In sum, it would make a fine addition. If it has not been done already is due to lack of time. However, employing the shared ProcessEngine instance returned by Configuration.getProcessEngine() might be a bad idea due to class loading concerns. In fact, the exception thrown while setting a field via reflection is the telltale sign of class loader conflicts.

           

          Please create a feature request for a process engine factory in JIRA. I will help you get the code right and update the shipped Tomcat configuration so that the custom resource factory is deployed by default in jBPM 4.5 and future versions.

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