glam/schemas/20251121/DIAGRAM_GENERATION_RESOLUTION.md
kempersc fa5680f0dd Add initial versions of custodian hub UML diagrams in Mermaid and PlantUML formats
- Introduced custodian_hub_v3.mmd, custodian_hub_v4_final.mmd, and custodian_hub_v5_FINAL.mmd for Mermaid representation.
- Created custodian_hub_FINAL.puml and custodian_hub_v3.puml for PlantUML representation.
- Defined entities such as CustodianReconstruction, Identifier, TimeSpan, Agent, CustodianName, CustodianObservation, ReconstructionActivity, Appellation, ConfidenceMeasure, Custodian, LanguageCode, and SourceDocument.
- Established relationships and associations between entities, including temporal extents, observations, and reconstruction activities.
- Incorporated enumerations for various types, statuses, and classifications relevant to custodians and their activities.
2025-11-22 14:33:51 +01:00

5.6 KiB

RESOLUTION: Proper Diagram Generation from Schema

Issue: Mermaid diagram not showing hub connections
Root Cause: Diagram was outdated (generated before bug fix)
Resolution: Proper schema-driven workflow established
Status: COMPLETE


What Was Wrong

You correctly pointed out that diagrams must be generated from LinkML schema files, not manually edited.

The issue was:

  • The Mermaid diagram file (custodian_name_v5_final.mmd) was generated BEFORE we fixed the refers_to_custodian slot
  • It didn't show hub connections because it was stale
  • We initially manually fixed it, which was the wrong approach

What We Fixed

1. Verified Generator Script Works Correctly

The generate_mermaid_modular.py script was already correct (uses induced_slot()), but we verified it:

# Key line that makes it work:
slot = sv.induced_slot(slot_name, class_name)  # ← Properly merges base slot + slot_usage

2. Regenerated Diagram from Schema

python scripts/generate_mermaid_modular.py \
    schemas/20251121/linkml/01_custodian_name_modular.yaml \
    schemas/20251121/uml/mermaid/custodian_name_v5_final.mmd

Result: Diagram now correctly shows all 3 hub connections

3. Created Automated Test

Created tests/test_mermaid_generation.py to verify:

  • Base slot definition is correct
  • Induced slots in all classes are correct
  • Diagram generation works
  • All hub connections are present
  • Custodian class is properly defined

Test Results: 🎉 ALL TESTS PASSED

4. Created Regeneration Workflow

Created scripts/regenerate_all.sh convenience script:

# After editing schema, run:
./scripts/regenerate_all.sh

# This regenerates:
# - Mermaid diagram
# - PlantUML diagram
# - RDF/OWL (Turtle)
# - JSON-LD
# - N-Triples
# And runs verification tests

5. Documented Proper Workflow

Created DIAGRAM_GENERATION_WORKFLOW.md with:

  • Schema-first development process
  • Why manual editing is wrong
  • How the generator works
  • Test-driven approach
  • Common mistakes to avoid

The Correct Workflow (Summary)

WRONG: Manual Editing

vim schemas/20251121/uml/mermaid/custodian_name_v5_final.mmd  # DON'T!

RIGHT: Schema-First

# 1. Edit schema
vim schemas/20251121/linkml/modules/slots/refers_to_custodian.yaml

# 2. Regenerate all artifacts
./scripts/regenerate_all.sh

# Or manually:
python scripts/generate_mermaid_modular.py schema.yaml output.mmd
python tests/test_mermaid_generation.py

Current Status

Schema (Source of Truth)

  • refers_to_custodian slot correctly defined: range: Custodian, required: true
  • All class definitions correct
  • Modular structure working

Generator Scripts

  • generate_mermaid_modular.py - Uses induced_slot() correctly
  • generate_plantuml_modular.py - Working
  • regenerate_all.sh - Convenience script created

Generated Diagrams

  • custodian_name_v5_final.mmd - Shows all 3 hub connections
  • Regenerated from schema (not manually edited)
  • Verified by automated tests

Tests

  • test_mermaid_generation.py - All 5 tests passing
  • Validates schema → diagram pipeline
  • Catches regressions

Documentation

  • DIAGRAM_GENERATION_WORKFLOW.md - Complete workflow guide
  • DIAGRAM_FIX_SUMMARY.md - Quick reference
  • HUB_CONNECTION_VERIFICATION_CORRECTED.md - Verification report

Verification

Quick Check

$ grep "||--|| Custodian" schemas/20251121/uml/mermaid/custodian_name_v5_final.mmd

CustodianReconstruction ||--|| Custodian : "refers_to_custodian"
CustodianName ||--|| Custodian : "refers_to_custodian"
CustodianObservation ||--|| Custodian : "refers_to_custodian"

All 3 connections present

Automated Test

$ python tests/test_mermaid_generation.py

🎉 ALL TESTS PASSED
  ✅ Base slot defined correctly
  ✅ Induced slots in all 3 classes correct
  ✅ Mermaid diagram generated successfully
  ✅ All 3 hub connections present in diagram
  ✅ Custodian class properly defined

All tests passing


Key Takeaways

  1. Schema is single source of truth - All diagrams/RDF generated from it
  2. Use induced_slot() in generators - Properly merges base + overrides
  3. Automate regeneration - Use regenerate_all.sh after schema changes
  4. Test-driven development - test_mermaid_generation.py catches issues
  5. Never manual edit generated files - They will be overwritten

Files Created/Updated

New Files

  • tests/test_mermaid_generation.py - Automated verification
  • scripts/regenerate_all.sh - Convenience script
  • schemas/20251121/DIAGRAM_GENERATION_WORKFLOW.md - Complete guide
  • schemas/20251121/DIAGRAM_FIX_SUMMARY.md - Quick reference
  • schemas/20251121/DIAGRAM_GENERATION_RESOLUTION.md - This file

Updated Files

  • schemas/20251121/uml/mermaid/custodian_name_v5_final.mmd - Regenerated from schema
  • schemas/20251121/uml/mermaid/custodian_hub_v5_FINAL.mmd - Regenerated
  • schemas/20251121/uml/mermaid/custodian_hub_FINAL.mmd - Regenerated

For Next Agent

The workflow is now correct and automated.

When making schema changes:

  1. Edit LinkML YAML files
  2. Run ./scripts/regenerate_all.sh
  3. Verify with automated tests
  4. Commit both schema and generated files

Don't:

  • Edit diagram files directly
  • Skip regeneration step
  • Commit divergent diagrams

Reference: See DIAGRAM_GENERATION_WORKFLOW.md for complete guide


Resolution Date: 2025-11-21 23:00
Status: COMPLETE - Proper workflow established
Next Action: Use schema-first development for all future changes