[PR] fix(datafusion): avoid loading tables for SHOW TABLES [paimon-rust]

["shyjsarah (via GitHub)" <gi...@apache.org>]

shyjsarah opened a new pull request, #576:
URL: https://github.com/apache/paimon-rust/pull/576

   ### Purpose
   
   Linked issue: close #575
   
   `SHOW TABLES` should use catalog metadata without opening every listed table. The default DataFusion `SchemaProvider::table_type` implementation calls `table(name)`, which can initialize FileIO and turn a metadata-only operation into a table access.
   
   ### Brief change log
   
   - collect base-table and view types while listing catalog objects
   - override `PaimonSchemaProvider::table_type` to use the collected metadata instead of loading table providers
   - preserve temporary table/view precedence and catalog view classification
   - keep direct table reads on the existing lazy-loading path
   - add regression coverage for unavailable table loading and catalog view types
   
   ### Tests
   
   - `cargo fmt --all -- --check`
   - `cargo test -p paimon-datafusion --test sql_context_tests`
   - `cargo clippy -p paimon-datafusion --all-targets -- -D warnings`
   
   ### API and Format
   
   No public API or storage format changes.
   
   ### Documentation
   
   No documentation changes are required.
   


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Re: [PR] fix(datafusion): avoid loading tables for SHOW TABLES [paimon-rust]

["JingsongLi (via GitHub)" <gi...@apache.org>]

JingsongLi merged PR #576:
URL: https://github.com/apache/paimon-rust/pull/576


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