PI12311: The ''=='' operation may fail as false when using enum

APAR status

• Closed as program error.

Error description

• When an enum type is defined with a method, it is not being
  recognized as enum during deserialization. This means that the
  Enum.valueOf( ) method is not being used to resolve the enum.
  This results in a new Object that is created and that has a
  different Object ID from the static enum definition.  The side
  effect of this from an application perspective is that the ==
  comparison reports false for values that are indeed equivalent.
  This will also moderately increase the memory usage since each
  enum is a new object within the system.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  Applications running grids with XIO and     *
  *                  COPY_TO_BYTES maps using enum types         *
  *                  that defined methods in their               *
  *                  implementation.                             *
  ****************************************************************
  * PROBLEM DESCRIPTION: An enum type is defined with a method,  *
  *                      and it is not recognized as a           *
  *                      enum during deserialization.            *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When an enum type is defined with a method, it is not being
  recognized as enum during deserialization. This means that the
  Enum.valueOf( ) method is not being used to resolve the enum.
  This results in a new Object that is created and that has a
  different Object ID from the static enum definition.  The side
  effect of this from an application perspective is that the ==
  comparison reports false for values that are indeed equivalent.
  This will also moderately increase the memory usage since each
  enum is a new object within the system.
  

Problem conclusion

• A code change to resolve the enum correctly is made to
  correct this problem.  Installing the update on the clients
  impacted by this problem will resolve the situation.  The data
  in the grid does not need to be reloaded in order to resolve
  this problem.
  

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 EXTREME SCAL

• Fixed component ID

  5724X6702

Applicable component levels

• R860 PSY

     UP