davisusanibar opened a new pull request, #35570: URL: https://github.com/apache/arrow/pull/35570
### Rationale for this change To close https://github.com/apache/arrow/issues/34252 ### What changes are included in this PR? This is a proposal to try to solve: 1. Receive a list of Substrait scalar expressions and use them to Project a Dataset - [x] Draft a Substrait Extended Expression to test (this will be generated by 3rd party project such as Isthmus) - [x] Use C++ draft PR to Serialize/Deserialize Extended Expression proto messages - [x] Create JNI Wrapper for ScannerBuilder::Project - [x] Create JNI API - [ ] Testing coverage - [ ] Documentation Current problem is: `java.lang.RuntimeException: Inferring column projection from FieldRef FieldRef.FieldPath(0)`. Not able to infer by column position by able to infer by colum name. This PR needs/use this PRs: - https://github.com/apache/arrow/pull/34834 - https://github.com/apache/arrow/pull/34227 2. Receive a Boolean-valued Substrait scalar expression and use it to filter a Dataset - [ ] Working to identify activities ### Are these changes tested? Initial unit test added. ### Are there any user-facing changes? No -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
