[ARROW-6049] [C++] Support using Array::View from compatible dictionary type to another

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.15.0
• Component/s: C++
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/22451
• Assignee: Wes McKinney
• Reporter: Wes McKinney
• Created: 26/Jul/19 19:47
• Updated: 11/Jan/23 07:44
• Resolved: 20/Aug/19 22:27

Description

For example, zero-copy conversion from dictionary(int32(), binary()) to dictionary(int32(), utf8()). The implementation must remember to call View on ArrayData::dictionary

Issue Links

• relates to: ARROW-3772 [C++] Read Parquet dictionary encoded ColumnChunks directly into an Arrow DictionaryArray
• links to: GitHub Pull Request #5129