[ARROW-13076] [Java] Enable ExtensionType to use StructVector and UnionVector for underlying storage

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 5.0.0
• Component/s: Java
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/28782
• Assignee: Bryan Cutler
• Reporter: Bryan Cutler
• Created: 14/Jun/21 17:59
• Updated: 11/Jan/23 08:30
• Resolved: 28/Jun/21 12:39

Description

Currently, an ExtensionTypeVector has a type constraint for the underlying storage to extend BaseValueVector. StructVector, UnionVector and DenseUnionVector do not extend this base class.

After ARROW-13044, Union vectors will extend the ValueVector interface and the extension vector type constrain could be relaxed to this interface to allow the above vector types to be used.

Issue Links

• Dependent: ARROW-13044 [Java] Union vectors should extend ValueVector
• links to: GitHub Pull Request #10607