[ARROW-10164] [Rust] Add support for DictionaryArray types to cast kernels

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.0.0
• Component/s: Rust
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/18306
• Assignee: Andrew Lamb
• Reporter: Andrew Lamb
• Created: 02/Oct/20 18:05
• Updated: 11/Jan/23 08:11
• Resolved: 08/Oct/20 23:47

Description

This ticket tracks the work to support casting to/from DictionaryArray's, (my usecase is DictionaryArray's with a Utf8 dictionary).

There is prototype work on https://github.com/alamb/arrow/tree/alamb/datafusion-string-dictionary

Issue Links

• links to: GitHub Pull Request #8345
• links to: GitHub Pull Request #8346