vladanvasi-db opened a new pull request, #60169:
URL: https://github.com/apache/spark/pull/60169
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### What changes were proposed in this pull request?
Extract shared SHOW command analysis helpers:
Jira: https://issues.apache.org/jira/browse/SPARK-61004
- Add current and explicit namespace resolution to
`CatalogIdentifierResolution` and route
`ResolveCatalogs` through it.
- Move the existing SHOW TABLES, SHOW TABLE EXTENDED, SHOW VIEWS and SHOW
FUNCTIONS lowering
branches from `ResolveSessionCatalog` into the internal
`ShowCommandHelper`.
- Share the legacy first-column rename between `KeepLegacyOutputs` and SHOW
TABLE EXTENDED.
The extraction preserves namespace routing, optional metadata loading, V1
configuration guards,
namespace validation order, ViewCatalog handling, errors and output
attributes.
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### Why are the changes needed?
Namespace resolution and SHOW lowering are embedded in analyzer rules, while
the legacy output
rename is duplicated. The helpers give these operations a reusable boundary
without requiring
callers to apply a whole analyzer rule. The existing rules use the helpers
in this patch.
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### Does this PR introduce _any_ user-facing change?
No. This is a behavior-preserving refactor with no new SQL features or
configuration.
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### How was this patch tested?
With JDK 21 and `build/sbt -Phive`:
- `catalyst/testOnly org.apache.spark.sql.catalyst.analysis.CatalogSuite`: 7
tests passed.
- `sql/testOnly org.apache.spark.sql.execution.command.PlanResolutionSuite
-- -z "SHOW helpers"`:
3 tests passed.
- V1/V2 `ShowTablesSuite`, `ShowViewsSuite`, `ShowFunctionsSuite` and
`ShowNamespacesSuite`:
159 tests passed across 8 suites.
- `SQLQueryTestSuite` filtered to `show-commands.sql`, `show-tables.sql` and
`show-views.sql`:
6 execution/analyzer golden cases passed with no golden changes.
- Hive `ShowTablesSuite`, `ShowFunctionsSuite` and `ShowNamespacesSuite`: 98
tests passed.
- `catalyst/scalastyle`, `catalyst/Test/scalastyle`, `sql/scalastyle` and
`sql/Test/scalastyle`: zero errors or warnings. `git diff --check` and
changed-file line-length
and ASCII checks also passed.
The new tests cover namespace metadata loading, current versus explicit
catalog-root namespaces,
origin/tag preservation, output expression IDs, legacy schemas, namespace
validation before the
V1 guard, and V2/unresolved targets.
The available artifact mirror returned HTTP 403 for the unrelated
`net.snowflake:snowflake-jdbc-thin:4.4.1` test driver. The SQL/Hive runs
used this temporary SBT
setting in project `sql`:
```scala
set libraryDependencies := libraryDependencies.value.filterNot(module =>
module.organization == "net.snowflake" && module.name == "snowflake-jdbc-thin")
```
The committed dependency configuration is unchanged.
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### Was this patch authored or co-authored using generative AI tooling?
Generated-by: Codex (GPT-6)
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