[jira] [Commented] (DRILL-7631) Updates to the Json Structure Parser

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DRILL-7631?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17055299#comment-17055299 ] 

ASF GitHub Bot commented on DRILL-7631:
---------------------------------------

paul-rogers commented on pull request #2016: DRILL-7631: Updates to the Json Structure Parser
URL: https://github.com/apache/drill/pull/2016
 
 
   # [DRILL-7631](https://issues.apache.org/jira/browse/DRILL-7631): Updates to the Json Structure Parser
   
   ## Description
   
   The JSON structure parser converts JSON tokens from the Jackson JSON parser into a structure consisting of values, arrays and objects. The structure parser handles the JSON aspects. An associated set of listeners converts JSON values to some other format (such as to vectors via the column writers.) This PR covers only the structure parser.
   
   Work to create a new JSON record reader using this parser revealed several required revisions:
   
   * Convert the various typed listener creation calls in the listener to a generic call that takes a `ValueDef` value description.
   * Add support to replace listeners as is needed when starting with an "unknown" field, which later resolves to some type, such as `Integer`.
   * Reorganized the code to build sub-parsers based on incoming JSON structure.
   
   Note that, at present, no code uses the JSON structure parser. That code will come in a later PR.
   
   ## Documentation
   
   None
   
   ## Testing
   
   Expanded an reran the associated unit tests. Moved the unit tests so that they are in the same package as the code.
   
 
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> Updates to the Json Structure Parser
> ------------------------------------
>
>                 Key: DRILL-7631
>                 URL: https://issues.apache.org/jira/browse/DRILL-7631
>             Project: Apache Drill
>          Issue Type: Improvement
>    Affects Versions: 1.17.0
>            Reporter: Paul Rogers
>            Assignee: Paul Rogers
>            Priority: Minor
>             Fix For: 1.18.0
>
>
> Updates to the JSON structure parser based on using it to create a revised JSON record reader.



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