[ARROW-9478] [C++] Improve error message on unsupported cast types

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.0.0
• Component/s: C++
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/25549
• Assignee: Antoine Pitrou
• Reporter: Antoine Pitrou
• Created: 15/Jul/20 13:53
• Updated: 11/Jan/23 08:07
• Resolved: 15/Jul/20 21:30

Description

Currently, the error message when trying an unsupported cast looks like this:

No cast function available to cast to dictionary<values=string, indices=int32, ordered=0>

It would be more informative if the source type was also mentioned.

Issue Links

• links to: GitHub Pull Request #7773