Sangeetha-Grantha

Metadata	Value
Status	Active
Version	1.1.0
Last Updated	2026-09-10
Author	Sangeetha Grantha Team
Document Type	Evidence record

Implementation Summary: TRACK-034 Bulk Import & Section Parsing Fixes

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[!NOTE] Historical evidence: results, counts, commands, and observations below belong to the original work described here. The editorial update date is not a new test or corpus verification. For present behavior, use current quality checks.

1. Executive Summary

Successfully resolved critical parsing failures in the bulk import pipeline that resulted in duplicate sections and missing krithi_lyric_sections for complex, multi-language compositions. The fix involved hardening the TextBlocker regex, preventing duplicate section collection across language variants, and remediating the backend service test suite to ensure stability.

2. Key Changes

A. Backend - TextBlocker.kt Hardening

• Language Marker Preservation: Updated to preserve language marker blocks (e.g., “ENGLISH”, “DEVANAGARI”, “GIST”, “MEANING”), allowing the scraper to correctly identify script boundaries even when headers are empty.
• Regex Evolution: Updated detectSectionHeader to handle optional suffixes (e.g., sahityam) and surrounding punctuation. Added support for single-letter abbreviations (P, A, C) and Indic script single-letter headers (Devanagari, Tamil, Telugu, Kannada, Malayalam).
• Extended Stop Markers: Added “Meaning”, “Gist”, “Word Division”, “Notes”, and “Variations” as language markers to prevent parsing non-lyric content as sections.

B. Backend - WebScrapingService.kt Enhancements

• Duplicate Prevention: Enhanced deriveSectionsFromBlocks to stop collecting sections after the first script block is processed. This prevents duplicate sections (Pallavi, Charanam, etc.) from being appended for every language variant present on a blog post.
• Language Labels: Synced languageLabels set with TextBlocker to include all new markers.

C. Testing - Remediation & Verification

• Service Test Fixes: Remediated compilation errors in EntityResolutionServiceTest, ImportServiceTest, KrithiServiceTest, QualityScoringServiceTest, TempleScrapingServiceTest, and WebScrapingServiceTest by updating them to use SangitaDalImpl and providing required constructor parameters.
• H2 Compatibility: Updated TestDatabaseFactory to create necessary custom ENUM types as DOMAIN AS VARCHAR for H2 compatibility, resolving JdbcSQLDataException failures during testing.
• New Verification Test: Created TextBlockerTest.kt with specific test cases for:
  • Multi-script duplication (Avyaaja Karuna)
  • Thyagaraja Vaibhavam blog structure (Amma Ravamma)
  • Filtering logic verification

3. Verification Results

• Unit Tests: TextBlockerTest passed all scenarios, confirming correct section segmentation and language boundary detection.
• Service Tests: All backend service tests (KrithiServiceTest, etc.) are now compiling and passing in the local environment.

4. Files Modified/Created

• modules/backend/api/src/main/kotlin/com/sangita/grantha/backend/api/services/scraping/TextBlocker.kt (Modified)
• modules/backend/api/src/main/kotlin/com/sangita/grantha/backend/api/services/WebScrapingService.kt (Modified)
• modules/backend/api/src/main/kotlin/com/sangita/grantha/backend/api/services/ImportService.kt (Modified)
• modules/backend/api/src/test/kotlin/com/sangita/grantha/backend/api/services/*Test.kt (Modified - 6 files)
• modules/backend/api/src/test/kotlin/com/sangita/grantha/backend/api/support/TestDatabaseFactory.kt (Modified)
• modules/backend/api/src/test/kotlin/com/sangita/grantha/backend/api/services/scraping/TextBlockerTest.kt (Created)
• application_documentation/07-quality/broken-tests-remediation.md (Created)

5. References

• Ref: application_documentation/04-database/schema.md
• Ref: conductor/tracks/TRACK-034-fix-text-blocker-parsing.md

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