PH41638: ECLIPSELINK MAY RETURN EMPTY WEAVED ENTITY FROM EM.FIND()

APAR status

• Closed as program error.

Error description

• When em.getReference (on a weaved entity) is used within a
  transaction, at commit time the object with only PK set is
  pushed to L2 cache. In the next transaction, if the same
  entity is queried (em.find) by ID, the object returned from
  em.find only contains PK and all the other attributes are set
  to null and not retrieved when accessed.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server - Java Persistence API - JPA 2.1 &   *
  *                  EclipseLink                                 *
  ****************************************************************
  * PROBLEM DESCRIPTION: EclipseLink returns object with null    *
  *                      values from                             *
  *                      EntityManager.getReference() call.      *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When em.getReference (on a weaved entity) is used within a
  transaction, at commit time the object with only PK set is
  pushed to L2
  cache. In the next transaction, if the same entity is queried
  (em.find)
  by ID, the object returned from em.find only contains PK and
  all the other
  attributes are set to null and not retrieved when accessed.
  

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=485984
  
  This fix is currently targeted for WebSphere Application
  Server 9.0.5.11, and WebSphere Liberty 22.0.0.1. 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

  WEBSPHERE APP S

• Fixed component ID

  5724J0800

Applicable component levels