IT12324: OUTPUT DEFAULT VALUES FOR 'CHOICE' ELEMENTS THAT ARE MISSING FROM A DFDL TREE

APAR status

• Closed as program error.

Error description

• When DFDL domain serializes an infoset, if required elements are
  missing then default values are used if supplied in the DFDL
  schema. However DFDL only does this for simple elements and
  complex sequence elements. If a complex choice element is
  missing from the infoset, a processing error occurs (CTDU4010 or
  CTDU4035), even if default values are present in the schema.
  

Local fix

• Set default values using a transformation node such as GDM,
  ESQL, JCN prior to serialization.
  

Problem summary

• ****************************************************************
  USERS AFFECTED:
  All users of IBM Integration Bus V10.0 that call the DFDL
  serializer with a sparse message tree where one or more required
  elements are missing from the infoset, and those elements are
  complex choice elements.
  
  This scenario is particularly applicable to COBOL. With COBOL,
  all elements are required, and a COBOL REDEFINES gives rise to a
  complex choice element in the DFDL schema.
  
  
  Platforms affected:
  MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  When the DFDL domain serializes a message tree, if required
  elements are missing then default values are used if supplied in
  the DFDL schema.  Up until now, DFDL would only do this for
  simple elements and complex sequence elements.
  

Problem conclusion

• The product now applies default values for missing complex
  choice elements.
  
  There is one restriction. The DFDL 1.0 specification states that
  for a missing complex choice element, the serializer should
  attempt to default the first child branch, and if that fails it
  should try the second child branch, and so on, until one
  succeeds. The IBM DFDL implementation will try the first branch
  only and if that fails it will not try another branch.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v10.0      10.0.0.4
  
  The latest available maintenance can be obtained from:
  http://www-01.ibm.com/support/docview.wss?rs=849&uid=swg27006041
  
  If the maintenance level is not yet available,information on
  its planned availability can be found on:
  http://www-1.ibm.com/support/docview.wss?rs=849&uid=swg27006308
  ---------------------------------------------------------------
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

  IT12293

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  INTEGRATION BUS

• Fixed component ID

  5724J0540

Applicable component levels

• RA00 PSY

     UP