RS03926: DECISION ENGINE DOES NOT SUPPORT STATIC METHODS ON INTERFACES

APAR status

• Closed as program error.

Error description

• When loading an interface within a sementic object model and
  call a static method defined on this interface, the bytecode is
  generated but you get a VerifyError :
  
  Exception in thread "main" java.lang.VerifyError: JVMVRFY036
  stack underflow; class=com/ibm/brl/generated/engine/BodyExecEnv,
  method=executemyRuleBody0()V, pc=7
  Exception Details:
   Location:
  
  com/ibm/brl/generated/engine/BodyExecEnv.executemyRuleBody0()V
  @7: JBinvokeinterface
   Reason:
     Attempt to pop empty stack.
   Current Frame:
     bci: @7
     flags: { }
     locals: { 'com/ibm/brl/generated/engine/BodyExecEnv' }
     stack: { integer }
  	at com.ibm.brl.generated.engine.ReteEngine.<init>(Unknown
  Source)
  	at
  com.ibm.brl.generated.engine.ReteDefinition.createEngine(Unknown
  Source)
  	at
  com.ibm.brl.generated.engine.ReteDefinition.createEngine(Unknown
  Source)
  	at
  com.ibm.brl.generated.engine.ReteDefinition.createEngine(Unknown
  Source)
  	at com.ibm.rules.studio.rve.launch.main.RveRulesetMain.main(Rv
  eRulesetMain.java:56)
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * Users running with Decision Engine.                          *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * When loading an interface within a sementic object model and *
  * call a static method defined on this interface, the bytecode *
  * is                                                           *
  * generated but you get a VerifyError :                        *
  *                                                              *
  * Exception in thread "main" java.lang.VerifyError: JVMVRFY036 *
  * stack underflow;                                             *
  * class=com/ibm/brl/generated/engine/BodyExecEnv,              *
  * method=executemyRuleBody0()V, pc=7                           *
  * Exception Details:                                           *
  *  Location:                                                   *
  *                                                              *
  * com/ibm/brl/generated/engine/BodyExecEnv.executemyRuleBody0( *
  * )V                                                           *
  * @7: JBinvokeinterface                                        *
  *  Reason:                                                     *
  *    Attempt to pop empty stack.                               *
  *  Current Frame:                                              *
  *    bci: @7                                                   *
  *    flags: { }                                                *
  *    locals: { 'com/ibm/brl/generated/engine/BodyExecEnv' }    *
  *    stack: { integer }                                        *
  * 	at com.ibm.brl.generated.engine.ReteEngine.<init>(Unknown   *
  * Source)                                                      *
  * 	at                                                          *
  * com.ibm.brl.generated.engine.ReteDefinition.createEngine(Unk *
  * nown                                                         *
  * Source)                                                      *
  * 	at                                                          *
  * com.ibm.brl.generated.engine.ReteDefinition.createEngine(Unk *
  * nown                                                         *
  * Source)                                                      *
  * 	at                                                          *
  * com.ibm.brl.generated.engine.ReteDefinition.createEngine(Unk *
  * nown                                                         *
  * Source)                                                      *
  * 	at                                                          *
  * com.ibm.rules.studio.rve.launch.main.RveRulesetMain.main(Rv  *
  * eRulesetMain.java:56)                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  

Problem conclusion

• The code is fixed and execution proceeds.
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  WDS FOR RULES

• Fixed component ID

  5725B6903

Applicable component levels