Myracle opened a new pull request, #27728:
URL: https://github.com/apache/flink/pull/27728
## What is the purpose of the change
This pull request makes `ObjectPath` implement the `Comparable<ObjectPath>`
interface, enabling natural ordering of `ObjectPath` instances. This allows
users to sort catalog object paths (e.g., in `TreeMap`, `TreeSet`, or
`Collections.sort()`) by database name first, then by object name, which is
useful when displaying or processing catalog objects in a deterministic order.
## Brief change log
- *Made `ObjectPath` implement `Comparable<ObjectPath>`, with comparison
based on `databaseName` first and then `objectName`*
- *Added `ObjectPathTest` with comprehensive test cases covering
comparison, sorting, transitivity, and consistency with `equals`*
## Verifying this change
This change added tests and can be verified as follows:
- *Added `ObjectPathTest` with 8 test cases covering:*
- *Comparison with different database names*
- *Comparison with same database but different object names*
- *Comparison with equal paths*
- *Comparison with self*
- *Consistency between `compareTo` and `equals`*
- *Sorting behavior with `Collections.sort()`*
- *Transitivity of the comparison*
- *Database name takes precedence over object name in ordering*
## Does this pull request potentially affect one of the following parts:
- Dependencies (does it add or upgrade a dependency): no
- The public API, i.e., is any changed class annotated with
`@Public(Evolving)`: yes (`ObjectPath` is annotated with `@PublicEvolving`)
- The serializers: no
- The runtime per-record code paths (performance sensitive): no
- Anything that affects deployment or recovery: JobManager (and its
components), Checkpointing, Kubernetes/Yarn, ZooKeeper: no
- The S3 file system connector: no
## Documentation
- Does this pull request introduce a new feature? no
- If yes, how is the feature documented? not applicable
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