CRQ-059: Document Wikipedia Wikidata Extractor

[jmikedupont2]

User description

This PR documents the Wikipedia Wikidata Extractor as part of CRQ-059.

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PR Type

Documentation

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Description

• Add comprehensive CRQ-059 documentation for Wikipedia Wikidata Extractor

• Document proposed solution with 8 implementation steps

• Include problem statement and justification for knowledge base expansion

• Add .emacs.d/ to .gitignore for development environment

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Diagram Walkthrough

flowchart LR
  A["Wikipedia URLs"] --> B["wikipedia_extractor crate"]
  B --> C["Article Content"]
  B --> D["Wikidata RDF Facts"]
  B --> E["Link Extraction"]
  C --> F["Structured File Cache"]
  D --> F
  E --> F
  F --> G["Knowledge Base"]

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File Walkthrough

	Relevant files
Documentation	CRQ-059-wikipedia-wikidata-extractor.md Add CRQ-059 Wikipedia extractor documentation                        docs/crq_standardized/CRQ-059-wikipedia-wikidata-extractor.md Create comprehensive documentation for CRQ-059 Wikipedia Wikidata Extractor Define problem statement and proposed 8-step solution Include justification for knowledge base enhancement Document integration with URL tool and caching strategy +32/-0
Configuration changes	.gitignore Add Emacs configuration to gitignore                                          .gitignore Add .emacs.d/ directory to gitignore

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✨ Finishing touches

🧪 Generate unit tests

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch feature/CRQ-059-wikipedia-wikidata-extractor

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[qodo-merge-pro]

PR Reviewer Guide 🔍

Here are some key observations to aid the review process:

⏱️ Estimated effort to review: 1 🔵⚪⚪⚪⚪

🧪 No relevant tests

🔒 No security concerns identified

⚡ Recommended focus areas for review API specifics Clarify exact Wikipedia/Wikidata API endpoints, rate limiting/backoff, redirect/disambiguation handling, language variants, and required User-Agent; define retry/error policies for network failures and non-200 responses. * Implement functionality to fetch Wikipedia article content given a URL or article title. * Handle different content formats (e.g., HTML, MediaWiki API responses). 4. **Wikidata RDF Fact Extraction:** * Integrate with the Wikidata API to retrieve RDF facts associated with Wikipedia articles. * Parse and store these facts in the defined data structures. Cache design Specify cache directory layout, file formats, keys (e.g., pageid/revid), versioning scheme, invalidation/TTL, deduplication, atomic writes, and size/retention policy. 6. **Structured File System Cache:** * Implement a mechanism to store the extracted Wikipedia content, Wikidata facts, and links in a structured file system. * Include versioning based on Wikipedia's revision IDs or timestamps to ensure data freshness. Integration contract Define the interface between url_extractor and wikipedia_extractor (inputs/outputs, sync vs async, timeouts, error propagation, idempotency) to ensure clear ownership and robust orchestration. 7. **Integration with URL Tool:** * Modify the existing `url_extractor` or create a new "URL tool" that can identify Wikipedia URLs. * When a Wikipedia URL is encountered, it will dispatch the URL to the `wikipedia_extractor` for processing. * The `wikipedia_extractor` will then return the processed data to the calling tool or directly store it in the cache.

[qodo-merge-pro]

PR Code Suggestions ✨

Explore these optional code suggestions:

Category	Suggestion	Impact
High-level	Add licensing and API compliance plan The suggestion recommends adding a section to the design document that outlines a plan for complying with Wikipedia/Wikidata's licensing (CC BY-SA) and API usage rules (e.g., User-Agent, rate limiting, using official endpoints). This is a critical step for ensuring the project is legally and operationally sound. Examples: docs/crq_standardized/CRQ-059-wikipedia-wikidata-extractor.md [6-29] **Proposed Solution:** 1. **Create `wikipedia_extractor` Rust Crate:** (Already initiated) A new Rust crate named `wikipedia_extractor` will be developed to encapsulate all Wikipedia and Wikidata extraction logic. 2. **Define Data Structures:** * Implement Rust structs to represent Wikipedia article content (text, links, metadata) and Wikidata RDF facts. * Consider using existing crates for RDF parsing if available and suitable. 3. **Wikipedia Article Fetching:** * Implement functionality to fetch Wikipedia article content given a URL or article title. * Handle different content formats (e.g., HTML, MediaWiki API responses). 4. **Wikidata RDF Fact Extraction:** ... (clipped 14 lines) Solution Walkthrough: Before: # Proposed Solution in CRQ-059-wikipedia-wikidata-extractor.md 1. **Create `wikipedia_extractor` Rust Crate** 2. **Define Data Structures** 3. **Wikipedia Article Fetching:** * Handle different content formats (e.g., HTML, MediaWiki API responses). 4. **Wikidata RDF Fact Extraction** 5. **Link Extraction:** * Parse Wikipedia article HTML/content... 6. **Structured File System Cache:** * Include versioning based on Wikipedia's revision IDs... 7. **Integration with URL Tool** 8. **Tests** After: # Proposed Solution in CRQ-059-wikipedia-wikidata-extractor.md 1. ... (existing steps) ... 8. **Tests** 9. **Licensing and API Compliance:** * **Licensing (CC BY-SA):** Store source URLs and revision IDs for attribution. Propagate license info. * **API Usage Policy:** * Use a unique `User-Agent` string for all requests. * Implement rate limiting and backoff, respecting the `maxlag` parameter. * Utilize official endpoints (MediaWiki API, Wikidata's `Special:EntityData`) instead of raw HTML scraping. * Leverage `ETags` for efficient caching. Suggestion importance[1-10]: 9 __ Why: This suggestion addresses a critical omission in the design document regarding legal and operational compliance, which is fundamental for the project's viability and could lead to being blocked if ignored.	High
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