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Posted to jira@arrow.apache.org by "Ben Kietzman (Jira)" <ji...@apache.org> on 2021/01/04 17:35:00 UTC
[jira] [Updated] (ARROW-5423) [C++] implement partial schema class
to extend JSON conversion
[ https://issues.apache.org/jira/browse/ARROW-5423?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ben Kietzman updated ARROW-5423:
--------------------------------
Fix Version/s: (was: 3.0.0)
4.0.0
> [C++] implement partial schema class to extend JSON conversion
> --------------------------------------------------------------
>
> Key: ARROW-5423
> URL: https://issues.apache.org/jira/browse/ARROW-5423
> Project: Apache Arrow
> Issue Type: New Feature
> Components: C++, Python
> Reporter: Ben Kietzman
> Assignee: Ben Kietzman
> Priority: Major
> Fix For: 4.0.0
>
>
> Currently the JSON parser supports only basic conversion rules such as parsing a number to {{int64}}. In general users will want more capable conversions like parsing a base64 string into binary or parsing a column of objects to {{map<string, string>}} instead of {{struct<string...>}}. This will require extension of {{arrow::json::ParseOptions::explicit_schema}} to something analagous to a schema but which supports mapping to more than a simple output type.
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