[ARROW-11342] [Python] [Gandiva] Expose ToString and result type information

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 5.0.0
• Component/s: C++ - Gandiva, Python
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/27239
• Assignee: Will Jones
• Reporter: Will Jones
• Created: 22/Jan/21 03:14
• Updated: 11/Jan/23 08:19
• Resolved: 23/Jun/21 17:24

Description

To make it easier to build and introspect the expression trees, I would like to expose the ToString() methods on Node, Expression, and Condition, as well as the methods exposing the fields and types inside.

import pyarrow as pa
import pyarrow.gandiva as gandiva
builder = gandiva.TreeExprBuilder()

print(builder.make_literal(1000.0, pa.float64()))
<pyarrow.gandiva.Node object at 0x7f36fd37ecf0>

Issue Links

• links to: GitHub Pull Request #9288