PH45755: ECLIPSELINK NEGATE EXPRESSION INAPPROPRIATELY SETS INTEGER AS RETURN TYPE.

APAR status

• Closed as program error.

Error description

• Eclipselink sets Integer as the negate expression's return type,
  instead of using the type used by the input expression.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server - Java Persistence API -             *
  *                  EclipseLink                                 *
  ****************************************************************
  * PROBLEM DESCRIPTION: Eclipselink throws a                    *
  *                      ClassCastException if the               *
  *                      CriteriaBuilder.neg() method is used    *
  *                      with a Number type other than Integer   *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  Eclipselink incorrectly assumes the result type of the
  CriteriaBuilder.neg() method is Integer.class type. Instead,
  the result should be the passed Expression type, which should
  extend java.lang.Number. For instance, if the result of the
  passed Expression is BigDecimal, EclipseLink throws the
  following exception.
  Exception:
  ```
  org.eclipse.persistence.exceptions.QueryException Exception
  Description: An Exception was thrown while executing a
  ReportQuery with a constructor expression:
  java.lang.reflect.InvocationTargetException Internal
  Exception: java.lang.reflect.InvocationTargetException Target
  Invocation Exception: java.lang.ClassCastException:
  java.lang.Integer cannot be cast to java.math.BigDecimal
  Query: ReportQuery(referenceClass=CritEntity sql="SELECT
  SUM(CASE WHEN (ID = ?) THEN VALUE ELSE -(VALUE) END ) FROM
  CRITENTITY")
  ```
  

Problem conclusion

• The fix for this APAR changes the EclipseLink implementation
  and involves an update to the third-party source. See
  https://bugs.eclipse.org/bugs/show_bug.cgi?id=579726
  
  This fix is currently targeted for WebSphere Application
  Server 9.0.5.13 and WebSphere Liberty 22.0.0.6. For more
  information, see 'Recommended Updates for WebSphere
  Application Server':
  https://www.ibm.com/support/pages/node/715553
  

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

  WEBS APP SERV N

• Fixed component ID

  5724H8800

Applicable component levels