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This PR renames the cache_dir parameter to working_dir in the read() operator function for consistency and clarity,

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Summary of Changes

Hello @ChenZiHong-Gavin, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request focuses on enhancing the clarity and consistency of the read() operator function by renaming a key parameter. The change from cache_dir to working_dir aims to more accurately represent the parameter's purpose, thereby improving code readability and reducing potential confusion for developers working with this function.

Highlights

  • Parameter Renaming: The cache_dir parameter in the read() operator function has been renamed to working_dir to improve consistency and clarity across the codebase.
  • Docstring Update: The docstring for the read() function has been updated to reflect the new working_dir parameter name.
  • Internal Usage Update: All internal references to cache_dir within the read() function, such as when initializing ParallelFileScanner and building readers, have been updated to use working_dir.
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Code Review

This pull request renames the cache_dir parameter to working_dir in the read function for better clarity. The changes are straightforward, but I have a couple of suggestions to improve the documentation and make the refactoring more consistent within the read.py file.

:param input_path: File or directory path(s) to read from
:param allowed_suffix: List of allowed file suffixes (e.g., ['pdf', 'txt'])
:param cache_dir: Directory to cache intermediate files (PDF processing)
:param working_dir: Directory to cache intermediate files (PDF processing)
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medium

The docstring for working_dir mentions only "PDF processing". However, this directory is also used by ParallelFileScanner for caching file scan results. To make the documentation more accurate, I suggest updating it to reflect its broader usage.

Suggested change
:param working_dir: Directory to cache intermediate files (PDF processing)
:param working_dir: Directory for caching intermediate files (e.g., for file scanning and PDF processing)

read_tasks = []
for suffix, file_paths in files_by_suffix.items():
reader = _build_reader(suffix, cache_dir, **reader_kwargs)
reader = _build_reader(suffix, working_dir, **reader_kwargs)
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medium

While you've correctly passed working_dir to _build_reader, the parameter in the _build_reader function definition is still named cache_dir. For better consistency and to complete the refactoring within this file, consider renaming the cache_dir parameter to working_dir in the _build_reader function signature and its body as well. This would improve internal consistency and readability.

@ChenZiHong-Gavin ChenZiHong-Gavin merged commit 27733a4 into main Dec 23, 2025
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@ChenZiHong-Gavin ChenZiHong-Gavin deleted the fix/fix-read-cache-dir branch December 23, 2025 07:51
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