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https://issues.apache.org/jira/browse/ARROW-18295?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Joris Van den Bossche updated ARROW-18295:
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Summary: [C++] FieldRef::FindAll/FindOne(DataType) improve error (was:
[C++] FieldRef::FineAll/FindOne(DataType) improve error)
> [C++] FieldRef::FindAll/FindOne(DataType) improve error
> -------------------------------------------------------
>
> Key: ARROW-18295
> URL: https://issues.apache.org/jira/browse/ARROW-18295
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Miles Granger
> Assignee: Miles Granger
> Priority: Major
> Fix For: 11.0.0
>
>
> [GitHub PR 14495 | https://github.com/apache/arrow/pull/14495] adds support
> for {{struct_field}} to accept string field names (as well as a mix of
> indices/strings). A side effect is the error produced by
> {{FieldRef::FindOne}} and by proxy {{FieldRef::FindAll}} does not give as
> good of an error as the previous {{StructFieldFunctor::CheckIndex}} did.
> See the [GitHub discussion here for more context |
> https://github.com/apache/arrow/pull/14495#discussion_r1016325430]
> It would be good to have a similar error message given when using
> {{FieldRef::FineOne}} on a {{DataType}}.
> Example error from {{StructFieldFunctor::CheckIndex}}:
> _out-of-bounds field reference to field 4 in type struct<a: int32, b: string,
> c: struct<d: int64, e: double>> with 3 fields_
> Error from {{FieldRef::FindOne}}:
> _No match for FieldRef.FieldPath(2 4) in struct<a: int32, b: string, c:
> struct<d: int64, e: double>>_
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