lucasfang opened a new pull request, #80:
URL: https://github.com/apache/paimon-cpp/pull/80
### Purpose
Linked issue: No linked issue
This change adds data file metadata support, including `DataFileMeta` with
versioned serializers and `DataFilePathFactory` for data file path generation.
Included changes:
- **DataFileMeta**:
- Adds `data_file_meta.h` / `.cpp` — core data file metadata structure
with fields for file name, file size, row count, min/max keys, key/value stats,
min sequence number, max sequence number, schema ID, level, creation time,
delete row count, embedded file index, file source, and extra files
- Adds `data_file_meta_test.cpp` — test coverage for DataFileMeta
- **DataFileMeta serializers**:
- Adds `data_file_meta_serializer.h` / `.cpp` — base serializer for
DataFileMeta with version dispatch
- Adds `data_file_meta_09_serializer.h` / `.cpp` — serializer for schema
version 09
- Adds `data_file_meta_10_serializer.h` / `.cpp` — serializer for schema
version 10
- Adds `data_file_meta_12_serializer.h` / `.cpp` — serializer for schema
version 12
- Adds `data_file_meta_first_row_id_legacy_serializer.h` / `.cpp` — legacy
serializer with first row ID support
- Adds `data_file_meta_serializer_test.cpp` — test coverage for serializers
- **DataFilePathFactory**:
- Adds `data_file_path_factory.h` / `.cpp` — factory for generating data
file paths with support for changelog files, bucket paths, and partition paths
- Adds `data_file_path_factory_test.cpp` — test coverage for
DataFilePathFactory
### Tests
Test coverage included in this change:
- `DataFileMetaTest` (`data_file_meta_test.cpp`)
- `DataFileMetaSerializerTest` (`data_file_meta_serializer_test.cpp`)
- `DataFilePathFactoryTest` (`data_file_path_factory_test.cpp`)
### API and Format
No public API, storage format, or protocol changes.
### Documentation
No documentation changes required.
### Generative AI tooling
Migrate-by: Aone Copilot (Opus 4.8)
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