RS03865: AUTOMATIC EXCEPTION HANDLING MAY BREAK THE RULE EXECUTION

21.0.2-WS-CP4BA-IF011
Operational Decision Manager V8.9.2.1: Interim Fix 54 for Engine

APAR status

• Closed as program error.

Error description

• When automatic exception handling is enabled in the decision
  engine some rules do not execute.  An error may be thrown
  
  Caused by: java.lang.ClassFormatError: Illegal exception table
  range in class file
  com/ibm/rules/generated/ruleflow/task1$003ep1/SEQEngine
  at java.lang.ClassLoader.defineClass1(Native Method)
  at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
  at java.lang.ClassLoader.defineClass(ClassLoader.java:839)
  at ilog.jit.jvm.IlxJITClassLoader.findClass(IlxJITClassLoader.j
  ava:133)
  at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
  at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
  
  Enabling assertion during ruleset generation (jvm option -ea) an
  error is thrown
  
  used by: java.lang.AssertionError: notAssignableTo
  boolean_to_string(valueOf(equals_ignore_case(this#expression &&
  this#expression2)), boolean
  at com.ibm.rules.engine.lang.semantics.util.SemAssertingDiagnos
  ticHandler.notAssignableTo(SemAssertingDiagnosticHandler.java:5
  3)
  at com.ibm.rules.engine.lang.semantics.SemAbstractCheckedLangua
  geFactory.adaptToAssignment(SemAbstractCheckedLanguageFactory.j
  ava:1680)
  at com.ibm.rules.engine.lang.semantics.SemAbstractCheckedLangua
  geFactory.checkedVariableAssignment(SemAbstractCheckedLanguageF
  actory.java:327)
  at com.ibm.rules.engine.algo.compilation.nullhandling.NullHandl
  ingStatementBuilder$BooleanVariableStatementBuilder.buildStatem
  ents(NullHandlingStatementBuilder.java:731)
  at com.ibm.rules.engine.algo.compilation.nullhandling.NullHandl
  ingStatementBuilder.buildStatementsWithThrow(NullHandlingStatem
  entBuilder.java:179)
  at com.ibm.rules.engine.algo.compilation.nullhandling.NullHandl
  ingHelper.varDeclBoolWithNullHandling(NullHandlingHelper.java:1
  26)
  at com.ibm.rules.engine.fastpath.compiler.SemSpecializedCompile
  r.varDeclListWithNullHandling(SemSpecializedCompiler.java:695)
  at com.ibm.rules.engine.fastpath.compiler.SemSpecializedCompile
  r.visit(SemSpecializedCompiler.java:391)
  at com.ibm.rules.engine.fastpath.compiler.SemSequentialCompiler
  .visit(SemSequentialCompiler.java:1376)
  at com.ibm.rules.engine.fastpath.compiler.SemStaticSequentialCo
  mpiler.visit(SemStaticSequentialCompiler.java:340)
  at com.ibm.rules.engine.fastpath.semantics.SemFromNode.accept(S
  emFromNode.java:42)
  

Local fix

• Disable Automatic exception handling.
  or rewrite local definitions using boolean expression so that
  the expression is evaluated in a boolean local variable before
  being used in another local variable definition
  
  For example:
  
  set string1 to  get string value when ( var is not null and the
  length of var is at least 10 )
  
  
  rewrite as:
  set  test to var is not null and the length of var is at least
  10 ;
  set string1 to  get string value when test
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * Decision Engine execution with Automatic Exception Handling  *
  * enabled.                                                     *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * in some circumstances where a boolean expression is used as  *
  * part of the initial value of a non boolean local variable    *
  * the decision engine may incorrectly evaluate this expression *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  

Problem conclusion

• the code is fixed
  

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