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docs(#319): add CHANGELOG entry for SKOS Vocabulary Module

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Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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KaifAhmad1
2026-03-28 14:15:02 +05:30
co-authored by Claude Sonnet 4.6
parent 71d037f581
commit 34bc7a45b9
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@@ -7,6 +7,15 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
## [Unreleased]
- **SKOS Vocabulary Module** (PR #319 by @KaifAhmad1):
- **Namespace helpers** (`semantica/ontology/namespace_manager.py`): Added `get_skos_uri(local_name)` — returns the full `http://www.w3.org/2004/02/skos/core#<local_name>` URI for any SKOS term. Added `build_concept_scheme_uri(name)` — slugifies a human-readable vocabulary name (spaces/special chars → hyphens, lower-cased) and anchors the result at the configured base URI as `<base>/vocab/<slug>`.
- **Triplet-store SKOS helpers** (`semantica/triplet_store/triplet_store.py`): Added `add_skos_concept(concept_uri, scheme_uri, pref_label, alt_labels, broader, narrower, related, definition, notation)` — assembles and stores all required SKOS triples (auto-declares the `skos:ConceptScheme`, asserts `rdf:type skos:Concept`, `skos:inScheme`, `skos:prefLabel`, and all optional predicates) via the existing `add_triplets()` API; no new storage paths introduced. Added `get_skos_concepts(scheme_uri=None)` — issues a SPARQL `SELECT` via `execute_query()` and collapses multi-valued `altLabel`/`broader`/`narrower`/`related` bindings into structured concept dicts; optional `scheme_uri` restricts results to one vocabulary.
- **OntologyEngine vocabulary APIs** (`semantica/ontology/engine.py`): Added three public methods that delegate to `QueryEngine` via `self.store.execute_query()` — `list_vocabularies()` returns all `skos:ConceptScheme` instances with labels; `list_concepts(scheme_uri)` returns every `skos:Concept` in a scheme with `pref_label` and `alt_labels`; `search_concepts(query, scheme_uri=None)` performs case-insensitive substring matching across `skos:prefLabel` and `skos:altLabel` with optional scheme scoping.
- **Security**: `search_concepts` sanitises user input (escapes `\`, `"`, newlines) before embedding it in the SPARQL string literal. All URI interpolation uses the existing `_sanitize_uri` helper.
- **Tests**: Added `TestSKOSOntologyEngine` (14 tests) to `tests/ontology/test_ontology_comprehensive.py` and `TestSKOSTripletStore` (6 tests) to `tests/triplet_store/test_triplet_store.py`. Coverage: URI helpers, vocabulary listing + deduplication, concept listing with multi-value alt-label collapse, search with/without scheme filter, injection sanitisation, empty results, and no-store error paths. 20 new tests, 0 failures, 1162 total passing, 0 regressions.
- **Docs** (`docs/reference/ontology.md`): Added "SKOS Vocabulary Management" section with SKOS data-model reference table, `add_skos_concept` usage example, bulk import via rdflib + `add_triplets`, `list_vocabularies` / `list_concepts` / `search_concepts` usage examples, and `NamespaceManager` URI helper examples.
- No new top-level Python package created; all code extends existing `semantica/ontology/` and `semantica/triplet_store/` packages. Fully opt-in and non-breaking.
- **SHACL Shape Generation & Validation** (PR #318 by @KaifAhmad1):
- **Phase 1 — Generation**: Added `SHACLGenerator` to `semantica/ontology/ontology_generator.py` — 6-stage internal pipeline: `_build_class_index` → `_generate_node_shapes` → `_attach_property_shapes` → `_propagate_inheritance` → `_apply_quality_tier` → `serialize`. Derives SHACL node and property shapes from any Semantica ontology dict; zero hand-authoring. Three output formats: Turtle, JSON-LD, N-Triples. Three quality tiers: `"basic"` (structure + cardinality), `"standard"` (+ `sh:in`, `sh:pattern`, inheritance; default), `"strict"` (+ `sh:closed true` + `sh:ignoredProperties` on all non-empty shapes). Iterative inheritance propagation up to 3+ levels, cycle-safe (max 20 passes), no duplicate property shapes per shape. No-domain properties attach to all node shapes. Added `PropertyShape`, `NodeShape`, `SHACLGraph` dataclasses.
- **Phase 1 — Engine API**: Added `OntologyEngine.to_shacl(ontology, *, format, base_uri, shapes_uri, include_inherited, severity, quality_tier, validate_output)` and `OntologyEngine.export_shacl(ontology, path, format, encoding)` to `semantica/ontology/engine.py`. Added `RDFExporter.export_shacl(shacl_string, file_path, format, encoding)` to `semantica/export/rdf_exporter.py` with extension validation (`.ttl`, `.jsonld`, `.nt`, `.shacl`).