[METRON-1135] Make Stellar field transformations handle nulls properly

• Type: Bug
• Status: Done
• Priority: Major
• Resolution: Done
• Fix Version/s: 0.4.1
• Assignee: Casey Stella
• Reporter: Casey Stella
• Created: 25/Aug/17 18:21
• Updated: 13/Sep/17 23:50
• Resolved: 13/Sep/17 23:49

Description

As it stands, stellar field transformations disallow users to set variables to null (and thus remove the field). This should be corrected. For instance,

"fieldTransformations" : [
        { "transformation" : "STELLAR"
        ,"output" : [ "new_field", "new_field2"]
        ,"config" : {
          "new_field" : "old_field"
         ,"new_field2" : "old_field2"
         ,"old_field" : "null"
         ,"old_field2" : "null"
                    }
        }
]

should rename "old_field" to "new_field and "old_field2" to "old_field2" The current behavior is to keep all 4 fields and to not change old_field or old_field2 at all.

Issue Links

• links to: GitHub Pull Request #718