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Posted to dev@drill.apache.org by "Paul Rogers (Jira)" <ji...@apache.org> on 2020/03/31 18:58:00 UTC
[jira] [Created] (DRILL-7683) Add "message parsing" to new JSON
loader
Paul Rogers created DRILL-7683:
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Summary: Add "message parsing" to new JSON loader
Key: DRILL-7683
URL: https://issues.apache.org/jira/browse/DRILL-7683
Project: Apache Drill
Issue Type: Improvement
Affects Versions: 1.18.0
Reporter: Paul Rogers
Assignee: Paul Rogers
Fix For: 1.18.0
Worked on a project that uses the new JSON loader to parse a REST response that includes a set of "wrapper" fields around the JSON payload. Example:
{code:json}
{ "status": "ok", "results: [ data here ]}
{code}
To solve this cleanly, added the ability to specify a "message parser" to consume JSON tokens up to the start of the data. This parser can be written as needed for each different data source.
Since this change adds one more parameter to the JSON structure parser, added builders to gather the needed parameters rather than making the constructor even larger.
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