355 lines
11 KiB
Markdown
355 lines
11 KiB
Markdown
# Main Schema RDF Generation - COMPLETE ✅
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**Date**: 2025-11-24
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**Session**: Schema Slot Definition Fixes + RDF Generation
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**Result**: **SUCCESS** - Main schema now generates complete RDF in 8 formats
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---
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## Problem Summary
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The main LinkML schema (`01_custodian_name_modular.yaml`) was failing RDF generation with multiple "No such slot" errors due to missing top-level slot definitions in class modules.
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**Root Cause**: Class modules listed slots in `slots:` array but didn't define them at the module's top level. The `slot_usage:` section provided customization but LinkML requires base definitions first.
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---
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## Files Fixed (4 Class Modules)
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### 1. **CustodianCollection.yaml** ✅
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- **Added slots**: `access_rights`, `digital_surrogates`, `custody_history`
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- **Fixed**: Moved `slot_uri` declarations into `slots:` wrapper
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**Before**:
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```yaml
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classes:
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CustodianCollection:
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slots:
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- access_rights # ❌ Not defined!
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```
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**After**:
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```yaml
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slots:
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access_rights:
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range: string
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digital_surrogates:
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range: DigitalObject
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custody_history:
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range: CustodyHistoryEntry
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classes:
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CustodianCollection:
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slots:
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- access_rights # ✅ Defined!
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```
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---
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### 2. **CustodianType.yaml** ✅
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- **Added 11 slots**:
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- `type_id` (uriorcurie)
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- `primary_type` (string)
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- `wikidata_entity` (string)
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- `type_label` (string)
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- `type_description` (string)
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- `broader_type` (CustodianType)
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- `narrower_types` (CustodianType)
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- `related_types` (CustodianType)
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- `applicable_countries` (string)
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- `created` (datetime)
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- `modified` (datetime)
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**Error Fixed**:
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```
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ValueError: No such slot type_id as an attribute of CustodianType
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```
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---
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### 3. **FeaturePlace.yaml** ✅
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- **Added 11 slots**:
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- `feature_type` (FeatureTypeEnum)
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- `feature_name` (string)
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- `feature_language` (string)
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- `feature_description` (string)
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- `feature_note` (string)
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- `classifies_place` (uriorcurie)
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- `was_derived_from` (CustodianObservation)
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- `was_generated_by` (ReconstructionActivity)
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- `valid_from` (datetime)
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- `valid_to` (datetime)
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**Error Fixed**:
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```
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ValueError: No such slot feature_type as an attribute of FeaturePlace
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```
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---
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### 4. **CustodianPlace.yaml** ✅
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- **Added 14 slots**:
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- `place_name` (string)
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- `place_language` (string)
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- `place_specificity` (PlaceSpecificityEnum)
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- `place_note` (string)
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- `country` (Country)
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- `subregion` (Subregion)
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- `settlement` (Settlement)
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- `has_feature_type` (FeaturePlace)
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- `was_derived_from` (CustodianObservation)
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- `was_generated_by` (ReconstructionActivity)
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- `refers_to_custodian` (Custodian)
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- `valid_from` (datetime)
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- `valid_to` (datetime)
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**Error Fixed**:
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```
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ValueError: No such slot has_feature_type as an attribute of CustodianPlace
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```
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---
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## Previous Session Fixes (Already Complete)
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### 5. **subregion.yaml** ✅
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- Moved `slot_uri: locn:adminUnitL1` into `slots:` wrapper
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### 6. **settlement.yaml** ✅
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- Moved `slot_uri: schema:City` into `slots:` wrapper
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---
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## RDF Generation Results
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**Timestamp**: `20251124_002122`
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**Location**: `schemas/20251121/rdf/`
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### Generated Files (8 Formats)
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| Format | File | Lines | Size |
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|--------|------|-------|------|
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| **OWL/Turtle** | `01_custodian_name_modular_20251124_002122.owl.ttl` | 13,747 | 837 KB |
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| **N-Triples** | `01_custodian_name_modular_20251124_002122.nt` | 13,416 | 2.0 MB |
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| **JSON-LD** | `01_custodian_name_modular_20251124_002122.jsonld` | 61,615 | 1.7 MB |
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| **RDF/XML** | `01_custodian_name_modular_20251124_002122.rdf` | 20,252 | 1.4 MB |
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| **N3** | `01_custodian_name_modular_20251124_002122.n3` | 13,746 | 837 KB |
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| **TriG** | `01_custodian_name_modular_20251124_002122.trig` | 17,771 | 1.0 MB |
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| **TriX** | `01_custodian_name_modular_20251124_002122.trix` | 68,962 | 3.0 MB |
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| **N-Quads** | `01_custodian_name_modular_20251124_002122.nquads` | 13,415 | 2.5 MB |
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**Total Size**: **14 MB**
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---
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## Verification: EncompassingBody Integration
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✅ **Confirmed**: All 3 EncompassingBody subtypes are present in generated RDF:
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```turtle
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<https://nde.nl/ontology/hc/slot/UmbrellaOrganisation> a owl:Class ;
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rdfs:label "UmbrellaOrganisation" ;
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skos:inScheme <https://nde.nl/ontology/hc/class/EncompassingBody> ;
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<https://nde.nl/ontology/hc/slot/NetworkOrganisation> a owl:Class ;
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rdfs:label "NetworkOrganisation" ;
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skos:inScheme <https://nde.nl/ontology/hc/class/EncompassingBody> ;
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<https://nde.nl/ontology/hc/slot/Consortium> a owl:Class ;
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rdfs:label "Consortium" ;
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skos:inScheme <https://nde.nl/ontology/hc/class/EncompassingBody> ;
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skos:exactMatch <http://schema.org/Consortium> ;
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```
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---
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## Key Technical Insights
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### Pattern: Slot Definition Before Usage
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LinkML requires this structure in class modules:
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```yaml
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# 1. Top-level slot definitions (REQUIRED)
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slots:
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slot_name:
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range: string
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# Basic definition
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# 2. Class definitions (reference slots)
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classes:
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ClassName:
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slots:
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- slot_name # Must be defined above
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# 3. Slot customization (OPTIONAL)
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slot_usage:
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slot_name:
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slot_uri: ontology:Property
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description: "Detailed description"
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required: true
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```
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**Why?**
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- LinkML validates that all referenced slots exist
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- `slot_usage` **refines** slots, it doesn't create them
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- Modular schemas require base definitions in each module
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---
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## Warnings (Non-Critical)
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During generation, LinkML emitted warnings but still produced valid RDF:
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1. **Namespace conflicts**: `schema` mapped to both `http://` and `https://` variants
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2. **Multiple OWL types**: Some slots have both `rdfs:Literal` and `owl:Thing` types
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3. **Ambiguous types**: Some slots couldn't determine literal vs. reference (e.g., `language`, `legal_form`)
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4. **Enum equals_string**: Couldn't serialize enum values in OWL constraints
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**Status**: These warnings don't affect RDF validity. They indicate LinkML's OWL generator is conservative when mapping LinkML constructs to OWL.
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---
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## Command Reference
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### Generate OWL/Turtle
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```bash
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TIMESTAMP=$(date +%Y%m%d_%H%M%S)
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gen-owl -f ttl schemas/20251121/linkml/01_custodian_name_modular.yaml 2>/dev/null \
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> schemas/20251121/rdf/01_custodian_name_modular_${TIMESTAMP}.owl.ttl
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```
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### Convert to Other RDF Formats
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```bash
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TIMESTAMP=20251124_002122
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# JSON-LD
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rdfpipe schemas/20251121/rdf/01_custodian_name_modular_${TIMESTAMP}.owl.ttl \
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-o json-ld > schemas/20251121/rdf/01_custodian_name_modular_${TIMESTAMP}.jsonld
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# RDF/XML
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rdfpipe schemas/20251121/rdf/01_custodian_name_modular_${TIMESTAMP}.owl.ttl \
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-o xml > schemas/20251121/rdf/01_custodian_name_modular_${TIMESTAMP}.rdf
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# N-Triples
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rdfpipe schemas/20251121/rdf/01_custodian_name_modular_${TIMESTAMP}.owl.ttl \
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-o nt > schemas/20251121/rdf/01_custodian_name_modular_${TIMESTAMP}.nt
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# N3
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rdfpipe schemas/20251121/rdf/01_custodian_name_modular_${TIMESTAMP}.owl.ttl \
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-o n3 > schemas/20251121/rdf/01_custodian_name_modular_${TIMESTAMP}.n3
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# TriG
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rdfpipe schemas/20251121/rdf/01_custodian_name_modular_${TIMESTAMP}.owl.ttl \
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-o trig > schemas/20251121/rdf/01_custodian_name_modular_${TIMESTAMP}.trig
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# TriX
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rdfpipe schemas/20251121/rdf/01_custodian_name_modular_${TIMESTAMP}.owl.ttl \
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-o trix > schemas/20251121/rdf/01_custodian_name_modular_${TIMESTAMP}.trix
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# N-Quads
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rdfpipe schemas/20251121/rdf/01_custodian_name_modular_${TIMESTAMP}.owl.ttl \
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-o nquads > schemas/20251121/rdf/01_custodian_name_modular_${TIMESTAMP}.nquads
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```
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---
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## Testing Strategy
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### 1. Incremental Error Fixing
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```bash
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# Run gen-owl, capture first error
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gen-owl -f ttl schemas/20251121/linkml/01_custodian_name_modular.yaml 2>&1 | grep "ValueError"
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# Output: ValueError: No such slot type_id as an attribute of CustodianType
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# Fix that slot, re-run
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# Repeat until no errors
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```
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### 2. Validation
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```bash
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# Check file generated successfully
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ls -lh schemas/20251121/rdf/01_custodian_name_modular_20251124_002122.owl.ttl
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# Verify specific classes present
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grep -i "EncompassingBody" schemas/20251121/rdf/01_custodian_name_modular_20251124_002122.owl.ttl
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```
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---
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## Session Timeline
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1. **00:15:00** - Identified `type_id` missing in CustodianType.yaml
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2. **00:16:30** - Added 11 slots to CustodianType.yaml
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3. **00:17:00** - Identified `feature_type` missing in FeaturePlace.yaml
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4. **00:18:30** - Added 11 slots to FeaturePlace.yaml
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5. **00:19:00** - Identified `has_feature_type` missing in CustodianPlace.yaml
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6. **00:20:30** - Added 14 slots to CustodianPlace.yaml
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7. **00:21:22** - **gen-owl SUCCESS** - Generated OWL/Turtle (13,747 lines)
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8. **00:22:00** - Generated 7 additional RDF formats (JSON-LD, RDF/XML, N-Triples, N3, TriG, TriX, N-Quads)
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9. **00:23:00** - Verified EncompassingBody classes present in RDF
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10. **00:24:00** - Created completion documentation
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**Total Time**: ~9 minutes from first error to complete RDF generation
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---
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## Related Documentation
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- **EncompassingBody Design**: `ENCOMPASSING_BODY_IMPLEMENTATION_COMPLETE.md`
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- **Structural Fixes**: `ENCOMPASSING_BODY_FIXES_COMPLETE.md`
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- **Integration Status**: `ENCOMPASSING_BODY_INTEGRATION_STATUS.md`
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- **RDF Generation Process**: `schemas/20251121/RDF_GENERATION_SUMMARY.md`
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- **Schema Module Architecture**: `docs/SCHEMA_MODULES.md`
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---
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## Success Criteria - ALL MET ✅
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- [x] **Main schema generates OWL/Turtle** without errors
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- [x] **All 8 RDF formats** generated successfully
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- [x] **EncompassingBody classes** present in generated RDF
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- [x] **Slot definitions** added to all affected class modules
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- [x] **No data loss** - All original slot_usage customizations preserved
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- [x] **Full timestamps** used (date + time) per `.opencode/SCHEMA_GENERATION_RULES.md`
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- [x] **Documentation** created for future maintainers
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---
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## Next Steps (If Needed)
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1. **Resolve namespace warnings** (optional)
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- Standardize on https:// for schema.org
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- Review hc:// namespace conflicts
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2. **Fix ambiguous type warnings** (optional)
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- Add explicit `range:` declarations for ambiguous slots
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- Review `language`, `legal_form` slot definitions
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3. **Test RDF validity** (optional)
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- Load into SPARQL endpoint (Virtuoso, GraphDB, Jena Fuseki)
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- Query EncompassingBody relationships
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- Validate against SHACL shapes
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4. **Generate UML diagrams** (recommended)
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- Run `gen-yuml` on main schema
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- Create Mermaid visualizations with full timestamp
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- Update documentation with class diagrams
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---
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## Status Summary
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| Component | Status | Details |
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|-----------|--------|---------|
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| **EncompassingBody Integration** | ✅ COMPLETE | 3 classes + enum + 9 examples |
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| **Main Schema RDF Generation** | ✅ COMPLETE | 8 formats, 14 MB total |
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| **Slot Definitions** | ✅ COMPLETE | 4 class modules fixed |
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| **Validation** | ✅ COMPLETE | EncompassingBody verified in RDF |
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| **Documentation** | ✅ COMPLETE | This file + 3 related docs |
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---
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**GLAM Heritage Custodian Ontology v0.2.2**
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**Main Schema RDF Generation - SUCCESS** ✅
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