Benjamin Kietzman created ARROW-5423:
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Summary: [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: Benjamin Kietzman
Assignee: Benjamin Kietzman
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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