PM70827: RUILib.sort() throws error when sorting a string array in a RUI handler during preview

Rational Business Developer Fix Pack 4 (8.0.1.4) for 8.0.1
Rational Business Developer 8.5.1
Rational Business Developer Fix Pack 2 (8.5.1.2) for 8.5.1

APAR status

• Closed as program error.

Error description

• Failing scenario
  ------------------
  If you define an array of strings to be sorted then the
  RUILib.sort() function fails when the array is cast to type ANY
  before passing it to the RUILib.sort() function. An example is
  given below:
  
  Example
  -------
  //header code removed.
  handler MyTestSort type RUIhandler{initialUI =
          [aList], onConstructionFunction = start,
              cssFile = 'css/test.css',
              title = 'SortTest'}
  
           aList List {};
  
           function start()
              myValuesAsString string[] = ['c','b','a'];
  
                   // Since the values are in an array of type
  string
                   // and RUILib.sort requires an array of type
  ANY
                   // simply cast the string array to an ANY
  array.
               myValues ANY[] = myValuesAsString AS ANY[];
  
                   // Although the myValues are of type any[] the
  sort
       // function fails with the error below.
                RUILib.sort(myValues, SortFunction);
                aList.values = myValues as String[];
           end
  
  function SortFunction(a any in, b any in) returns(int)
      //some sort algorithm
  end
  
  Error
  -----
  Could not render UI
  //[CRRUI2102E] Could not sort Array
  //[CRRUI2094E] Here are the EGL function calls leading to this
  error:
  //
  //    MyTestSort.start() [native JavaScript]
  //
  //uncaught exception: [type=egl.core.RuntimeException,
  message=[CRRUI2102E] Could not sort Array]
  //:0
  //[CRRUI2095E] Could not find the EGL function calls leading to
  this error
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  In RBD 8.0.1.3 and previous releases, regarding
  RUILib.sort(array, sortFunction), when the array is not
  defined as any[] type but casting from other types, a
  runtime error happens.
  

Problem conclusion

• In RBD 8.0.1.4 and future releases, RUILib.sort(array,
  sortFunction) will support arrays casted into any[]. If the
  sortFunction or array is null, a NullException will be
  thrown in runtime.
  

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

  RATL BUS DEV

• Fixed component ID

  5724S5000

Applicable component levels

• R801 PSN

     UP