RS00167: ISSUE WITH USING HASHERS

APAR status

• Closed as program error.

Error description

• Using hashers may lead to the following type of exception:
  
  
  java.lang.IllegalArgumentException:
  java.lang.ClassCastException@2717b157
        at sun.reflect.GeneratedMethodAccessor268.invoke(Unknown
  Source)
        at
  sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethod
  AccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at
  ilog.rules.inset.IlrExecComponentPropertyValue.getValue(Unknown
  Source)
        at
  ilog.rules.engine.IlrHashingJoinMem.calculateTailMemoryKey(Unkno
  wn Source)
        at ilog.rules.engine.IlrHashingEqualJoinMem.b(Unknown
  Source)
        at ilog.rules.engine.IlrHashingJoinMem.goto(Unknown
  Source)
        at ilog.rules.engine.IlrBetaMem.new(Unknown Source)
        at ilog.rules.engine.IlrHashingJoinMem.goto(Unknown
  Source)
        at ilog.rules.engine.IlrBetaMem.new(Unknown Source)
        at ilog.rules.engine.IlrRuleMem.T(Unknown Source)
  

Local fix

• Option1: Remove hasher declarations
  Option2: Prevent Rulesets from being shared by several
  contexts ( through the ruleset property ruleset.shareable=false
  in RES for example )
  

Problem summary

• Using hashers such as :
    hasher(Product p) = ?p.productSpecId;
    hasher(ProductInstance pi) = ?pi.productSpecId;
  
  certain rules may provoke a class cast exception (in
  particular under multi threaded execution).
  

Problem conclusion

• Code has been modified to prevent this exception from being
  raised
  

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

  WS ILOG JRULES

• Fixed component ID

  5724X9800

Applicable component levels

• R710 PSY

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