Enhancement [CAT-FR-CO-05] Drop ShaclValidationExecutor add provenance cascade listener (#28)

Aligns arc42 building block and runtime views with the cleanup PR:
SHACL evaluation now runs directly inside ShaclValidationStrategy and
SchemaValidationServiceImpl (no shared executor), and ProvenanceCleanupListener
joins ValidationResultCleanupListener as a second AssetDeletedEvent consumer.

Author: peleskek

federated-catalogue/src/docs/architecture/chapters/05_building_block_view.adoc

@@ -472,14 +472,12 @@ Validation is delegated to a list of `ValidationStrategy` implementations select
 | `XmlSchemaValidationStrategy` | XML | `XML_SCHEMA`
 |===
 
-`ShaclValidationStrategy` delegates to `ShaclValidationExecutor` — the same SHACL evaluation engine used during the upload verification path. This ensures consistent SHACL results across both flows.
+`ShaclValidationStrategy` evaluates SHACL constraints directly via the TopBraid SHACL engine — the same engine invoked by `SchemaValidationServiceImpl` on the upload verification path. Both paths run the engine in-line on the request thread.
 
 RDF asset content is parsed by `RdfAssetParser`, which unwraps Loire JWTs before parsing and delegates format detection to `CredentialFormatDetector` (JSON-LD, Turtle, N-Triples, RDF/XML). Validation results are persisted via `ValidationResultStore` (see <<_validation_result_storage>>).
 
 Multi-asset requests (`assetIds` with more than one entry) are restricted to SHACL validation: all asset models are merged into a single data graph before evaluation. Single-asset requests dispatch to all applicable enabled strategies. The maximum number of assets per request is controlled by `federated-catalogue.validation.max-assets-per-request` (default: 20).
 
-`ShaclValidationExecutor` runs TopBraid SHACL in an isolated fixed-size thread pool and enforces a hard timeout. Both are configurable: `federated-catalogue.validation.shacl.timeout-seconds` (default: 10) and `federated-catalogue.validation.shacl.pool-size` (default: 4). Requests that exceed the timeout receive a `TimeoutException` (HTTP 504).
-
 Validation results are persisted in the `validation_result` table.
 Results carry an `outdated` flag and an `OutdatedReason` that records why a result is no longer current:
 
@@ -803,7 +801,7 @@ The `AssetStore` provides two parallel access paths: **hash-based** methods (int
 | `storeUnverified(metadata, filename)` | Store a non-RDF asset; IRI is pre-assigned by `IriGenerator`
 |===
 
-The `deleteAsset(hash)` and `changeLifeCycleStatus(hash, status)` methods are the deliberate exceptions — both remain hash-based to guarantee unambiguous single-row targeting. See ADR 7, Hash-Based Mutation Operations Exception. `deleteAsset` publishes an `AssetDeletedEvent` after the row deletion, triggering cascade cleanup of all associated validation results (see <<_validation_result_storage>>).
+The `deleteAsset(hash)` and `changeLifeCycleStatus(hash, status)` methods are the deliberate exceptions — both remain hash-based to guarantee unambiguous single-row targeting. See ADR 7, Hash-Based Mutation Operations Exception. `deleteAsset` publishes an `AssetDeletedEvent` after the row deletion, triggering cascade cleanup of associated validation results and provenance credentials (see <<_validation_result_storage>>).
 
 The `IriGenerator` assigns IRIs before storage: it extracts IRIs from RDF content (`credentialSubject.id`, `@id`, ontology/shapes/vocabulary IRIs) or generates UUID URNs (RFC 4122) for non-RDF assets and as fallback. The `IriValidator` checks all assigned IRIs against supported formats (DIDs, UUID URNs, generic URNs, HTTP/HTTPS IRIs) — returning `true`/`false`. Callers decide how to handle invalid IRIs (fallback to UUID URN, or reject the request).
 
@@ -908,7 +906,12 @@ The two REST endpoints for validation result retrieval are:
 
 After a graph backend reset, `GraphRebuilder.rebuildValidationResults()` re-projects all validation result records as `fcmeta:` triples from PostgreSQL, restoring graph state without re-running verification. Each record is updated to `SYNCED` on success or `FAILED` if the graph write fails.
 
-**Asset deletion cascade:** When an asset is deleted, `AssetStoreImpl` publishes an `AssetDeletedEvent`. `ValidationResultCleanupListener` handles this event at `BEFORE_COMMIT`, deleting all validation result rows that reference the asset from both the relational DB and the graph store. The cleanup runs inside the same transaction as the asset deletion — either both the asset row and its validation results are removed, or neither is. The `ValidationResultStore.deleteByAssetId()` method handles the graph triple removal best-effort: a failed graph cleanup is logged but does not abort the transaction.
+**Asset deletion cascade:** When an asset is deleted, `AssetStoreImpl` publishes an `AssetDeletedEvent`. Two `@TransactionalEventListener(BEFORE_COMMIT)` consumers run inside the same transaction as the asset deletion:
+
+* `ValidationResultCleanupListener` invokes `ValidationResultStore.deleteByAssetId()` to remove validation result rows from the relational DB and best-effort cascade-delete the associated graph triples (a failed graph cleanup is logged but does not abort the transaction).
+* `ProvenanceCleanupListener` invokes `ProvenanceService.deleteByAssetId()` to remove provenance credential rows from `provenance_credentials`.
+
+Either all three (asset row, validation results, provenance credentials) are removed, or none is. The listener pattern keeps the `assetstore` bounded context free of direct dependencies on the validation and provenance services.
 
 ==== Schema Management Store
 

federated-catalogue/src/docs/architecture/chapters/06_runtime_view.adoc

@@ -283,7 +283,7 @@ Notes:
         Parti ->> + AssetStore: deleteAsset(assetHash)
         AssetStore ->> + Graph: deleteClaims()
         Graph -->> - AssetStore:Null
-        Note over AssetStore: AssetDeletedEvent is published before commit;<br/>ValidationResultCleanupListener cascades<br/>removal of validation results — see _validation_result_storage.
+        Note over AssetStore: AssetDeletedEvent is published before commit;<br/>ValidationResultCleanupListener cascades removal of validation results<br/>and ProvenanceCleanupListener cascades removal of provenance credentials —<br/>see _validation_result_storage.
         AssetStore -->> - Parti: Null
 
         Parti ->> + Keycloak: DELETE /realms/gaia-x/groups/{partID}
@@ -1325,7 +1325,7 @@ Besides verifying the credential, additional tasks are executed (e.g., format de
 
 **Schema validation** (when enabled) checks the uploaded credentials against a composite schema of type SHACL.
 If a credential does not conform to the composite schema, a verification exception is thrown with a message containing the validation report. In that case, the verification process does not proceed, and claims are not extracted.
-Automatic schema validation against stored SHACL shapes is **disabled by default in the upload verification flow** and is gated by `federated-catalogue.verification.schema`. When enabled, upload verification still routes through `SchemaValidationService` (see <<_schema_validation_service>>). On-demand validation of stored assets — covering SHACL, JSON Schema, and XML Schema — is provided by the dedicated `AssetValidationService` (see <<_on_demand_asset_validation>>); both flows share the same `ShaclValidationExecutor` for SHACL evaluation.
+Automatic schema validation against stored SHACL shapes is **disabled by default in the upload verification flow** and is gated by `federated-catalogue.verification.schema`. When enabled, upload verification still routes through `SchemaValidationService` (see <<_schema_validation_service>>). On-demand validation of stored assets — covering SHACL, JSON Schema, and XML Schema — is provided by the dedicated `AssetValidationService` (see <<_on_demand_asset_validation>>); both flows evaluate SHACL via the same TopBraid SHACL engine.
 
 NOTE: For backward compatibility, automatic schema validation during upload can be re-enabled via the configuration property `federated-catalogue.verification.schema=true`.