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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2021/04/26 11:23:32 UTC
[GitHub] [arrow-rs] alamb opened a new issue #38: Read temporal values from JSON
alamb opened a new issue #38:
URL: https://github.com/apache/arrow-rs/issues/38
*Note*: migrated from original JIRA: https://issues.apache.org/jira/browse/ARROW-4803
Ability to parse strings that look like timestamps to timestamp type. Need to consider whether only timestamp type should be supported as most JSON libraries stick to ISO8601. It might also be inefficient to use regex for timestamps, so the user should provide a hint of which columns to convert to timestamps
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[GitHub] [arrow-rs] sum12 commented on issue #38: Read temporal values from JSON
Posted by GitBox <gi...@apache.org>.
sum12 commented on issue #38:
URL: https://github.com/apache/arrow-rs/issues/38#issuecomment-1008956010
@alamb I would like to take a stab at this one (if it is still relevant)
Thanks for looking :-)
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[GitHub] [arrow-rs] sum12 commented on issue #38: Read temporal values from JSON
Posted by GitBox <gi...@apache.org>.
sum12 commented on issue #38:
URL: https://github.com/apache/arrow-rs/issues/38#issuecomment-1006626932
It seems the behavior here is not consistent. TemporalValues can get parsed to `u64` if they look like `u64` otherwise it is a `null`, but only while dealing with `build_struct_array` whereas for `build_nested_list_array` an error is returned.
It could be done as done in csv_reader with regex and extra strings describing possible formats. Or we could have parser as closures (eg : `Fn(String) -> Type)`) stored in the reader/decoder(/Schema?)
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[GitHub] [arrow-rs] alamb commented on issue #38: Read temporal values from JSON
Posted by GitBox <gi...@apache.org>.
alamb commented on issue #38:
URL: https://github.com/apache/arrow-rs/issues/38#issuecomment-1009285243
As @nevi-me filed the original ticket, he may have some additional context. Thanks @sum12 !
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