RS03638: REST API USING JSON SERIALIZE NULL VALUES IN RESPONSE WHEN FIELDS ARE DECORATED WITH @XMLELEMENT ANNOTATION

Operational Decision Manager V8.10.4.0: Interim Fix 4 for Decision Server
IBM Operational Decision Manager V8.10.5 Download Document
IBM Operational Decision Manager V8.10.5 Refresh Pack
Operational Decision Manager V8.10.3.0: Interim Fix 11 for Decision Server

APAR status

• Closed as program error.

Error description

• When an attribute decorated with @XmlElement is null, the value
  is printed as null in the json result returned by HTDS
  execution.
  This behavior has changed since
  8.9.2.
  
  Example:
  @XmlAccessorType(XmlAccessType.FIELD)
   public
  class Person {
   @XmlElement
   private String name;
   @XmlElement
  
  private Date age;
  
   public String getName() {
   return
  this.name;
   }
  
   public void setName(String name) {
   this.name =
  name;
   }
  
   public Date getAge() {
   return this.age;
   }
  
   public
  void setAge(Date age) {
   this.age = age;
   }
   }
  
  If the age
  field is set to a value, and name field is null:
  => until 8.8.1
  you got :
  {"age":"2020-06-24T16:23:16.810+0000"}
  
  => after
  8.8.1 you got:
  {"name": null,
  "age":"2020-06-24T16:23:16.810+0000"}
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * Users using htds with fields decorated with @xmlElement      *
  * annotation                                                   *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * When an attribute decorated with @XmlElement is null, the    *
  * value is printed as null in the json result returned by HTDS *
  * execution.                                                   *
  * This behavior has changed since 8.9.2 with the ugrade of the *
  * JAXB library used for transforming object to JSON.           *
  *                                                              *
  *                                                              *
  *                                                              *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  

Problem conclusion

• Note that by default the fix changes HTDS behavior and restore
  the 8.8.1 result format
  Example:
  
  After the fix
  {"age":"2020-06-24T16:23:16.810+0000"}
  
  Before the fix
  {"name": null, "age":"2020-06-24T16:23:16.810+0000"}
  
  A property has been added in HTDS application web.xml to restore
  the behavior if needed. set the value of
  forceSerializationOfNullFieldsDecoratedWithJAXBAnnotations
  property to true to restore the previous behavior.
  
  
   <context-param>
  
  <param-name>forceSerializationOfNullFieldsDecoratedWithJAXBAnnot
  ations</param-name>
          <param-value>false</param-value>
      </context-param>
  

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

  WDS FOR RULES

• Fixed component ID

  5725B6903

Applicable component levels

• R8A0 PSY

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