JunWang222 opened a new pull request, #773:
URL: https://github.com/apache/wayang/pull/773
## Summary
This PR adds the Wayang Presto platform implementation and engine-only
integration tests.
## What is included
- Adds `wayang-presto` platform module.
- Adds Presto mappings/operators for:
- TableSource
- Filter
- Projection
- Join
- GlobalReduce
- ReduceBy
- Sort
- TableSink
- Adds end-to-end `PrestoOperatorsIT` coverage for each operator.
- Adds JavaPlanBuilder integration tests that simulate user-facing API usage.
- Keeps the integration tests engine-only by registering only
`Presto.plugin()`.
- Uses self-contained in-memory Presto fixtures created by the test setup,
without requiring external datasets.
## Validation
- Rebased on latest `apache/wayang:main`.
- Presto operator tests are designed to run against the local Presto setup
and skip when Presto is unavailable.
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