[jira] [Created] (NIFI-5958) JsonTreeReader can't resolve ChoiceDataType properly

["Minsu Kim (JIRA)" <ji...@apache.org>]

Minsu Kim created NIFI-5958:
-------------------------------

             Summary: JsonTreeReader can't resolve ChoiceDataType properly
                 Key: NIFI-5958
                 URL: https://issues.apache.org/jira/browse/NIFI-5958
             Project: Apache NiFi
          Issue Type: Bug
          Components: Core Framework
    Affects Versions: 1.9.0
            Reporter: Minsu Kim


When reading json, JsonTreeReader doesn't seem to work properly.

A field is either string or map. so I define schema as choiceType, but it always parsed as string

 

Details:
 * dataType in RecordSchema: CHOICE[STRING, MAP[STRING]]
 * json to resolve: \{"key": "value"}
 * expected result: HashMap
 * actual result: char[] ("MapRecord[\{key=value}]")

 

I found this code in AbstractJsonRowRecordReader

 
{code:java}
} else if (dataType != null && RecordFieldType.CHOICE == dataType.getFieldType()) {
    final ChoiceDataType choiceDataType = (ChoiceDataType) dataType;

    for (final DataType possibleDataType : choiceDataType.getPossibleSubTypes()) {
        if (possibleDataType.getFieldType() != RecordFieldType.RECORD) {
            continue;
        }{code}
 

Reader handles only when possible type is record, ignoring map type.

Please let me know whether it's intention or problem

 

Thanks



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)