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- Added OrcSchemaField struct to map Arrow fields to ORC column indices - Added OrcSchemaManifest struct to hold the complete field mapping - Supports both leaf fields (with column indices) and container fields - Includes child field support for nested types (struct, list, map) - Uses ORC's depth-first pre-order column indexing scheme - Verified: Data structures defined and documented These structures enable predicate pushdown to resolve field references to ORC column indices for statistics lookup. Co-authored-by: Claude Sonnet 4.5 <[email protected]>
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) - Created FoldingAnd inline helper function for combining expressions with AND - Optimizes for literal(true) case: avoids creating redundant 'true AND expr' - Will be used by TestStripes (Task #12) to build guarantee expressions - Follows same pattern as Parquet implementation - SimplifyWithGuarantee is already available from compute::Expression Verified: - Optimizes true AND right -> right - General case: left AND right for non-true left expressions - Uses compute::and_ for logical AND combination
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Thanks for opening a pull request! If this is not a minor PR. Could you open an issue for this pull request on GitHub? https://github.com/apache/arrow/issues/new/choose Opening GitHub issues ahead of time contributes to the Openness of the Apache Arrow project. Then could you also rename the pull request title in the following format? or See also: |
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- Added OrcSchemaField struct to map Arrow fields to ORC column indices - Added OrcSchemaManifest struct to hold the complete field mapping - Supports both leaf fields (with column indices) and container fields - Includes child field support for nested types (struct, list, map) - Uses ORC's depth-first pre-order column indexing scheme - Verified: Data structures defined and documented These structures enable predicate pushdown to resolve field references to ORC column indices for statistics lookup. Co-authored-by: Claude Sonnet 4.5 <[email protected]>
cbb330
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Feb 24, 2026
) - Created FoldingAnd inline helper function for combining expressions with AND - Optimizes for literal(true) case: avoids creating redundant 'true AND expr' - Will be used by TestStripes (Task #12) to build guarantee expressions - Follows same pattern as Parquet implementation - SimplifyWithGuarantee is already available from compute::Expression Verified: - Optimizes true AND right -> right - General case: left AND right for non-true left expressions - Uses compute::and_ for logical AND combination
cbb330
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Comprehensive session summary documenting completion of Tasks #0-#3:
Total: 4 tasks, 10 PRs, 454 lines of code + docs