[jira] [Created] (NIFI-5138) JSON Record Readers providing wrong schema to sub-records when there is a CHOICE of multiple RECORD types

["Mark Payne (JIRA)" <ji...@apache.org>]

Mark Payne created NIFI-5138:
--------------------------------

             Summary: JSON Record Readers providing wrong schema to sub-records when there is a CHOICE of multiple RECORD types
                 Key: NIFI-5138
                 URL: https://issues.apache.org/jira/browse/NIFI-5138
             Project: Apache NiFi
          Issue Type: Bug
          Components: Extensions
            Reporter: Mark Payne
            Assignee: Mark Payne


When the JSON Record Reader is used, if the schema provides a CHOICE of two different RECORD types for a sub-record, then the sub-record's schema ends up being an empty schema. This results in RecordPath's not properly evaluating. For example, with the schema below:
{code:java}
{
  "name": "top", "namespace": "nifi",
  "type": "record",
  "fields": [
    { "name": "id", "type": "string" },
    { "name": "child", "type": [{
         "name": "first", "type": "record",
         "fields": [{ "name": "name", "type": "string" }]
       }, {
         "name": "second", "type": "record",
         "fields": [{ "name": "id", "type": "string" }]
    }]
  ]
}{code}
 

If I then have the following JSON:
{code:java}
{
  "id": "1234",
  "child": {
      "id": 4321"
  }
}{code}
The result is that the record returned has the correct schema. However, if I then call record.getValue("child") I am returned a Record object that has no schema.

This results in the RecordPath "/child/id" returning a null value.

 



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