Initial commit

.gitignore

+/target

Cargo.toml

+[package]
+name = "oxibug"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+oxigraph = "0.4.8"
+reqwest = { version="0.12.12", features=["blocking"] }

src/main.rs

+use oxigraph::store::Store;
+
+fn download_shacl() -> Vec<u8> {
+    use reqwest::blocking::Client;
+    let client = Client::new();
+    let shacl_url = "https://www.w3.org/ns/shacl.ttl";
+    client.get(shacl_url).send().expect("failed to download file").bytes().expect("failed to build bytes").to_vec()
+}
+
+fn load_turtle(store: &mut Store, bytes: &[u8]) {
+    use oxigraph::io::{RdfFormat, RdfParser};
+    use oxigraph::model::{GraphNameRef, NamedNodeRef};
+    let shacl_ns = "http://www.w3.org/ns/shacl";
+    let graph_iri = GraphNameRef::NamedNode(NamedNodeRef::new_unchecked(shacl_ns));
+    store
+        .bulk_loader()
+        .load_from_reader(
+            RdfParser::from_format(RdfFormat::Turtle)
+                .without_named_graphs()
+                .with_default_graph(graph_iri),
+            bytes,
+            )
+        .expect("unable to load data")
+}
+
+fn perform_query_1(store: &Store) {
+    use oxigraph::sparql::QueryResults;
+    let query_str = "
+    SELECT DISTINCT
+    ?node
+    ?label
+    ?inverse_label
+    ?type
+WHERE {
+    GRAPH <http://www.w3.org/ns/shacl> {
+            ?node ?p ?o .
+    }
+    GRAPH <http://www.w3.org/ns/shacl> {
+        #OPTIONAL { ?node <http://www.w3.org/2000/01/rdf-schema#label> ?label . } .
+        OPTIONAL { ?node <http://example.com/ns#inverseLabel> ?inverse_label . } .
+    } .
+
+    GRAPH <http://www.w3.org/ns/shacl> {
+        OPTIONAL { ?node <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> ?type . } .
+    }
+    FILTER(?node = <http://www.w3.org/ns/shacl#ClosedConstraintComponent-closed>)
+}
+        ";
+        if let QueryResults::Solutions(solutions) = store.query(query_str).expect("invalid query") {
+            println!("Query 1: {}", solutions.count());
+        }
+}
+
+fn perform_query_2(store: &Store) {
+    use oxigraph::sparql::QueryResults;
+    let query_str = "
+    SELECT DISTINCT
+    ?node
+    ?label
+    ?inverse_label
+    ?type
+WHERE {
+    GRAPH <http://www.w3.org/ns/shacl> {
+            ?node ?p ?o .
+    }
+    GRAPH <http://www.w3.org/ns/shacl> {
+        OPTIONAL { ?node <http://www.w3.org/2000/01/rdf-schema#label> ?label . } .
+        OPTIONAL { ?node <http://example.com/ns#inverseLabel> ?inverse_label . } .
+    } .
+
+    GRAPH <http://www.w3.org/ns/shacl> {
+        OPTIONAL { ?node <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> ?type . } .
+    }
+    FILTER(?node = <http://www.w3.org/ns/shacl#ClosedConstraintComponent-closed>)
+}
+        ";
+        if let QueryResults::Solutions(solutions) = store.query(query_str).expect("invalid query") {
+            println!("Query 2: {}", solutions.count());
+        }
+}
+
+fn main() {
+    let mut store = Store::new().expect("failed to create new store");
+    let shacl_bytes = download_shacl();
+    load_turtle(&mut store, &shacl_bytes);
+    perform_query_1(&store);
+    perform_query_2(&store);
+}