.

graph/src/class.rs

@@ -1,5 +1,5 @@
 use std::fmt::Display;
-use oxigraph::model::{Graph, Literal, NamedNode, NamedNodeRef, NamedOrBlankNode, Term, Triple};
+use oxigraph::model::{Graph, Literal, LiteralRef, NamedNode, NamedNodeRef, NamedOrBlankNode, Term, TermRef, Triple};
 use oxilangtag::LanguageTag;
 use url::Url;
 use gl_search::Schema;
@@ -125,28 +125,53 @@ impl Class {
     }
 
     pub fn template(&self, subject: NamedNode) -> Graph {
-        let empty_english_string_term = Term::Literal(Literal::new_language_tagged_literal_unchecked("", "en"));
-        let empty_string_term = Term::Literal(Literal::new_simple_literal(""));
-        let empty_node = NamedNode::new_unchecked("");
-        let hash_node = NamedNode::new_unchecked("#");
+        let subject = subject.as_ref();
+        let empty_english_string_literal = LiteralRef::new_language_tagged_literal_unchecked("", "en");
+        let empty_string_literal = LiteralRef::new_simple_literal("");
+        let empty_node = NamedNodeRef::new_unchecked("");
+        let hash_node = NamedNodeRef::new_unchecked("#");
 
         match self {
             Class::RdfProperty => Graph::new(),
             Class::RdfsClass => Graph::new(),
             Class::SkosConcept => Graph::new(),
             Class::Work => Graph::from_iter([
-                Triple::new(NamedOrBlankNode::NamedNode(subject), vocab::rdawd::TITLE_OF_WORK, empty_english_string_term)
+                Triple::new(subject, vocab::rdawd::TITLE_OF_WORK, empty_english_string_literal),
+                Triple::new(subject, vocab::rdawo::IDENTIFIER_FOR_WORK, empty_node),
+                Triple::new(subject, vocab::rdawo::EXPRESSION_OF_WORK, empty_node),
             ]),
             Class::Person => Graph::from_iter([
-                Triple::new(NamedOrBlankNode::NamedNode(subject.clone()), vocab::rdaad::GIVEN_NAME, empty_english_string_term.clone()),
-                Triple::new(NamedOrBlankNode::NamedNode(subject.clone()), vocab::rdaad::SURNAME, empty_english_string_term),
-                Triple::new(NamedOrBlankNode::NamedNode(subject.clone()), vocab::rdaao::IDENTIFIER_FOR_PERSON, Term::NamedNode(hash_node.clone())),
-                Triple::new(NamedOrBlankNode::NamedNode(hash_node.clone()), vocab::rdano::SCHEME_OF_NOMEN, Term::NamedNode(empty_node)),
-                Triple::new(NamedOrBlankNode::NamedNode(subject.clone()), vocab::rdand::NOMEN_STRING, empty_string_term),
+                Triple::new(subject, vocab::rdaad::GIVEN_NAME, empty_english_string_literal),
+                Triple::new(subject, vocab::rdaad::SURNAME, empty_english_string_literal),
+                Triple::new(subject, vocab::rdaao::IDENTIFIER_FOR_PERSON, hash_node),
+                Triple::new(hash_node, vocab::rdano::SCHEME_OF_NOMEN, empty_node),
+                Triple::new(hash_node, vocab::rdand::NOMEN_STRING, empty_string_literal),
+            ]),
+            Class::CorporateBody => Graph::from_iter([
+                Triple::new(subject, vocab::rdaao::IDENTIFIER_FOR_CORPORATE_BODY, hash_node),
+                Triple::new(subject, vocab::rdaad::NAME_OF_CORPORATE_BODY, empty_english_string_literal),
+                Triple::new(hash_node, vocab::rdano::SCHEME_OF_NOMEN, empty_node),
+                Triple::new(hash_node, vocab::rdand::NOMEN_STRING, empty_string_literal),
+            ]),
+            Class::Expression => Graph::from_iter([
+                Triple::new(subject, vocab::rdaeo::WORK_EXPRESSED, empty_node),
+                Triple::new(subject, vocab::rdaeo::LANGUAGE_OF_EXPRESSION, vocab::lclang::ENGLISH),
+                Triple::new(subject, vocab::rdaeo::TITLE_OF_EXPRESSION, empty_english_string_literal),
+                Triple::new(subject, vocab::rdaeo::CONTENT_TYPE, empty_node),
+                Triple::new(subject, vocab::rdaeo::MANIFESTATION_OF_EXPRESSION, empty_node),
+            ]),
+            Class::Manifestation => Graph::from_iter([
+                Triple::new(subject, vocab::rdamd::TITLE_OF_MANIFESTATION, empty_english_string_literal),
+                Triple::new(subject, vocab::rdamd::UNIFORM_RESOURCE_LOCATOR, empty_string_literal),
+                Triple::new(subject, vocab::rdamo::CARRIER_TYPE, vocab::rdact::ONLINE_RESOURCE),
+                Triple::new(subject, vocab::rdamo::MEDIA_TYPE, empty_node),
+                Triple::new(subject, vocab::rdamo::FILE_TYPE, empty_node),
+                Triple::new(subject, vocab::rdamo::CATEGORY_OF_MANIFESTATION, empty_node),
+                Triple::new(subject, vocab::rdamo::EXPRESSION_MANIFESTED, empty_node),
+                Triple::new(subject, vocab::rdamo::IDENTIFIER_FOR_MANIFESTATION, hash_node),
+                Triple::new(hash_node, vocab::rdano::SCHEME_OF_NOMEN, empty_node),
+                Triple::new(hash_node, vocab::rdand::NOMEN_STRING, empty_string_literal),
             ]),
-            Class::CorporateBody => Graph::new(),
-            Class::Expression => Graph::new(),
-            Class::Manifestation => Graph::new(),
         }
     }
 }

graph/src/ontology.rs

@@ -106,11 +106,11 @@ PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
 PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
 PREFIX gl: <https://graphofliberty.org/2026/04/ont/>
 
-SELECT ?subject ?class WHERE {{
-    VALUES ?class {{ rdf:Property rdfs:Class }}
+SELECT ?subject ?class WHERE {
+    VALUES ?class { rdf:Property rdfs:Class }
     ?subject a ?class ;
         gl:readOnly "true"^^xsd:boolean .
-}}"#.to_owned();
+}"#.to_owned();
 
         let request = OntologyQueryRequest {
             sparql_query: Some(sparql_query),

graph/src/vocab.rs

@@ -14,11 +14,11 @@ pub mod glo {
         NamedNodeRef::new_unchecked("https://graphofliberty.org/2026/04/ont/nextUrl");
 }
 
-pub mod skos {
+pub mod lclang {
     use oxigraph::model::NamedNodeRef;
 
-    pub const CONCEPT: NamedNodeRef =
-        NamedNodeRef::new_unchecked("http://www.w3.org/2004/02/skos/core#Concept");
+    pub const ENGLISH: NamedNodeRef =
+        NamedNodeRef::new_unchecked("http://id.loc.gov/vocabulary/languages/eng");
 }
 
 pub mod owl {
@@ -47,6 +47,13 @@ pub mod rdac {
         NamedNodeRef::new_unchecked("http://rdaregistry.info/Elements/c/C10007");
 }
 
+pub mod rdact {
+    use oxigraph::model::NamedNodeRef;
+
+    pub const ONLINE_RESOURCE: NamedNodeRef =
+        NamedNodeRef::new_unchecked("http://rdaregistry.info/termList/RDACarrierType/1018");
+}
+
 pub mod rdaad {
     use oxigraph::model::NamedNodeRef;
 
@@ -65,6 +72,9 @@ pub mod rdaao {
 
     pub const IDENTIFIER_FOR_PERSON: NamedNodeRef =
         NamedNodeRef::new_unchecked("http://rdaregistry.info/Elements/a/object/P50094");
+
+    pub const IDENTIFIER_FOR_CORPORATE_BODY: NamedNodeRef =
+        NamedNodeRef::new_unchecked("http://rdaregistry.info/Elements/a/object/P50006");
 }
 
 pub mod rdawd {
@@ -74,6 +84,16 @@ pub mod rdawd {
         NamedNodeRef::new_unchecked("http://rdaregistry.info/Elements/w/datatype/P10088");
 }
 
+pub mod rdawo {
+    use oxigraph::model::NamedNodeRef;
+
+    pub const IDENTIFIER_FOR_WORK: NamedNodeRef =
+        NamedNodeRef::new_unchecked("http://rdaregistry.info/Elements/w/object/P10002");
+
+    pub const EXPRESSION_OF_WORK: NamedNodeRef =
+        NamedNodeRef::new_unchecked("http://rdaregistry.info/Elements/w/object/P10078");
+}
+
 pub mod rdaed {
     use oxigraph::model::NamedNodeRef;
 
@@ -81,11 +101,55 @@ pub mod rdaed {
         NamedNodeRef::new_unchecked("http://rdaregistry.info/Elements/e/datatype/P20312");
 }
 
+pub mod rdaeo {
+    use oxigraph::model::NamedNodeRef;
+
+    pub const WORK_EXPRESSED: NamedNodeRef =
+        NamedNodeRef::new_unchecked("http://rdaregistry.info/Elements/e/object/P20231");
+
+    pub const LANGUAGE_OF_EXPRESSION: NamedNodeRef =
+        NamedNodeRef::new_unchecked("http://rdaregistry.info/Elements/e/object/P20006");
+
+    pub const TITLE_OF_EXPRESSION: NamedNodeRef =
+        NamedNodeRef::new_unchecked("http://rdaregistry.info/Elements/e/datatype/P20312");
+
+    pub const CONTENT_TYPE: NamedNodeRef =
+        NamedNodeRef::new_unchecked("http://rdaregistry.info/Elements/e/object/P20001");
+
+    pub const MANIFESTATION_OF_EXPRESSION: NamedNodeRef =
+        NamedNodeRef::new_unchecked("http://rdaregistry.info/Elements/e/object/P20059");
+}
+
 pub mod rdamd {
     use oxigraph::model::NamedNodeRef;
 
     pub const TITLE_OF_MANIFESTATION: NamedNodeRef =
         NamedNodeRef::new_unchecked("http://rdaregistry.info/Elements/m/datatype/P30335");
+
+    pub const UNIFORM_RESOURCE_LOCATOR: NamedNodeRef =
+        NamedNodeRef::new_unchecked("http://rdaregistry.info/Elements/m/datatype/P30154");
+}
+
+pub mod rdamo {
+    use oxigraph::model::NamedNodeRef;
+
+    pub const CARRIER_TYPE: NamedNodeRef =
+        NamedNodeRef::new_unchecked("http://rdaregistry.info/Elements/m/object/P30001");
+
+    pub const MEDIA_TYPE: NamedNodeRef =
+        NamedNodeRef::new_unchecked("http://rdaregistry.info/Elements/m/object/P30002");
+
+    pub const IDENTIFIER_FOR_MANIFESTATION: NamedNodeRef =
+        NamedNodeRef::new_unchecked("http://rdaregistry.info/Elements/m/object/P30004");
+
+    pub const FILE_TYPE: NamedNodeRef =
+        NamedNodeRef::new_unchecked("http://rdaregistry.info/Elements/m/object/P30018");
+
+    pub const CATEGORY_OF_MANIFESTATION: NamedNodeRef =
+        NamedNodeRef::new_unchecked("http://rdaregistry.info/Elements/m/object/P30335");
+
+    pub const EXPRESSION_MANIFESTED: NamedNodeRef =
+        NamedNodeRef::new_unchecked("http://rdaregistry.info/Elements/m/object/P30139");
 }
 
 pub mod rdand {
@@ -100,4 +164,11 @@ pub mod rdano {
 
     pub const SCHEME_OF_NOMEN: NamedNodeRef =
         NamedNodeRef::new_unchecked("http://rdaregistry.info/Elements/n/object/P80069");
+}
+
+pub mod skos {
+    use oxigraph::model::NamedNodeRef;
+
+    pub const CONCEPT: NamedNodeRef =
+        NamedNodeRef::new_unchecked("http://www.w3.org/2004/02/skos/core#Concept");
 }

publish/src/rdf/ontology.rs

@@ -1,396 +0,0 @@
-use crate::error;
-use crate::rdf::conversion;
-use gl_graph::language::LanguageCondition;
-use gl_graph::vocab::gl;
-use iced::futures::TryFutureExt;
-use oxigraph::model::vocab::{rdf, rdfs, xsd};
-use oxigraph::model::{
-    Dataset, Graph, GraphNameRef, LiteralRef, NamedNode, NamedNodeRef, NamedOrBlankNode,
-    NamedOrBlankNodeRef, TermRef, Triple, TripleRef,
-};
-use oxigraph::sparql::{QueryResults, SparqlEvaluator};
-use oxigraph::store::Store;
-use std::collections::{BTreeMap, BTreeSet, HashMap};
-use std::fmt::Display;
-use std::path::{Path, PathBuf};
-use std::sync::LazyLock;
-use tracing::{debug_span, field};
-
-const ONTOLOGY_PREFIX: &str = "https://graphofliberty.org/2026/04/ont/";
-const ONTOLOGY_GRAPH_NAME: GraphNameRef = GraphNameRef::NamedNode(NamedNodeRef::new_unchecked(
-    "https://graphofliberty.org/2026/04/ont",
-));
-
-static PREFIXES: LazyLock<BTreeMap<String, String>> = LazyLock::new(|| {
-    BTreeMap::from_iter(
-        [
-            ("rdf", "http://www.w3.org/1999/02/22-rdf-syntax-ns#"),
-            ("rdfs", "http://www.w3.org/2000/01/rdf-schema#"),
-            ("owl", "http://www.w3.org/2002/07/owl#"),
-            ("xsd", "http://www.w3.org/2001/XMLSchema#"),
-            ("ldp", "http://www.w3.org/ns/ldp#"),
-            ("dc", "http://purl.org/dc/elements/1.1/"),
-            ("posix", "http://www.w3.org/ns/posix/stat#"),
-            (
-                "ebucore",
-                "http://www.ebu.ch/metadata/ontologies/ebucore/ebucore#",
-            ),
-            ("prov", "http://www.w3.org/ns/prov#"),
-            ("locid", "http://id.loc.gov/vocabulary/identifiers/"),
-            ("loclang", "http://id.loc.gov/vocabulary/languages/"),
-            ("premis", "http://www.loc.gov/premis/rdf/v1#"),
-            ("premis3", "http://www.loc.gov/premis/rdf/v3/"),
-            ("dcterms", "http://purl.org/dc/terms/"),
-            ("fedora", "http://fedora.info/definitions/v4/repository#"),
-            ("rdaa", "http://rdaregistry.info/Elements/a/"),
-            ("rdac", "http://rdaregistry.info/Elements/c/"),
-            ("rdae", "http://rdaregistry.info/Elements/e/"),
-            ("rdai", "http://rdaregistry.info/Elements/i/"),
-            ("rdam", "http://rdaregistry.info/Elements/m/"),
-            ("rdan", "http://rdaregistry.info/Elements/n/"),
-            ("rdap", "http://rdaregistry.info/Elements/p/"),
-            ("rdaf", "http://rdaregistry.info/Elements/rof/"),
-            ("rdat", "http://rdaregistry.info/Elements/t/"),
-            ("rdau", "http://rdaregistry.info/Elements/u/"),
-            ("rdaw", "http://rdaregistry.info/Elements/w/"),
-            ("rdax", "http://rdaregistry.info/Elements/x/"),
-            ("rdaco", "http://rdaregistry.info/termList/RDAContentType/"),
-            ("rdact", "http://rdaregistry.info/termList/RDACarrierType/"),
-            ("rdamt", "http://rdaregistry.info/termList/RDAMediaType/"),
-            ("rdaft", "http://rdaregistry.info/termList/fileType/"),
-            ("schema", "https://schema.org/"),
-            ("gl", "http://fedora.quill.lan/rest/"),
-            ("glo", ONTOLOGY_PREFIX),
-        ]
-        .map(|(k, v)| (k.to_string(), v.to_string())),
-    )
-});
-
-pub struct OntologyBuilder {
-    path: Option<PathBuf>,
-}
-
-impl OntologyBuilder {
-    pub fn with_path(mut self, path: impl AsRef<Path>) -> Self {
-        let path = path.as_ref().to_owned();
-        self.path = Some(path);
-        self
-    }
-
-    pub fn build(self) -> error::Result<Ontology> {
-        let store = if let Some(path) = self.path {
-            Store::open(path)
-        } else {
-            Store::new()
-        }?;
-
-        let prefixes = PREFIXES
-            .iter()
-            .map(|(k, v)| (k.to_string(), v.to_string()))
-            .collect::<HashMap<String, String>>();
-
-        /*let mut indexed_by = HashMap::new();
-        for quad in store
-            .quads_for_pattern(None, Some(gl::INDEXED_BY_FIELD), None, None)
-            .filter_map(Result::ok)
-        {
-            if let NamedOrBlankNode::NamedNode(subject) = quad.subject
-                && let Term::NamedNode(field) = quad.object
-            {
-                indexed_by.insert(subject, field);
-            }
-        }*/
-
-        Ok(Ontology { store, prefixes })
-    }
-}
-
-#[derive(Clone, Debug)]
-pub struct IndexEntry {
-    pub category_id: u64,
-    pub fields: HashMap<String, String>,
-}
-
-#[derive(Clone, Debug, Eq)]
-pub struct LabeledIri {
-    pub iri: NamedNode,
-    pub label: String,
-}
-
-impl PartialEq for LabeledIri {
-    fn eq(&self, other: &Self) -> bool {
-        self.iri == other.iri
-    }
-}
-
-impl PartialOrd for LabeledIri {
-    fn partial_cmp(&self, other: &Self) -> Option<std::cmp::Ordering> {
-        self.label.partial_cmp(&other.label)
-    }
-}
-
-impl Ord for LabeledIri {
-    fn cmp(&self, other: &Self) -> std::cmp::Ordering {
-        self.label.cmp(&other.label)
-    }
-}
-
-impl Display for LabeledIri {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        write!(f, "{}", self.label)
-    }
-}
-
-#[derive(Clone, Debug)]
-pub struct IndexField {
-    pub name: String,
-    pub label: String,
-}
-
-pub struct Ontology {
-    store: Store,
-    prefixes: HashMap<String, String>,
-}
-
-impl Ontology {
-    pub fn builder() -> OntologyBuilder {
-        OntologyBuilder { path: None }
-    }
-
-    pub fn prefixes() -> &'static BTreeMap<String, String> {
-        &*PREFIXES
-    }
-
-    pub fn to_dataset(&self) -> Dataset {
-        self.store
-            .quads_for_pattern(None, None, None, Some(ONTOLOGY_GRAPH_NAME))
-            .filter_map(Result::ok)
-            .collect::<Dataset>()
-    }
-
-    pub fn store(&self) -> Store {
-        self.store.clone()
-    }
-
-    pub fn query_for_indexable_triples(
-        &self,
-        language: &LanguageCondition,
-        source: Option<Dataset>,
-    ) -> impl Future<Output = error::Result<HashMap<NamedNode, IndexEntry>>> + 'static {
-        let language_filter = language.to_filter_expression("fieldValue");
-        let query = format!(
-            r#"SELECT ?individual ?categoryId ?fieldName ?fieldValue
-WHERE {{
-    ?class a gl:SearchableClass ;
-    gl:categoryId ?categoryId ;
-    gl:associatedProperty ?property .
-
-    ?property gl:indexedByField/gl:fieldName ?fieldName .
-
-    ?individual a ?class ;
-    ?property ?fieldValue .
-
-    {language_filter}
-}}"#
-        );
-        let mut sparql = SparqlEvaluator::new()
-            .with_prefix("gl", ONTOLOGY_PREFIX)
-            .unwrap()
-            .parse_query(&query)
-            .expect("Unable to parse query");
-        sparql.dataset_mut().set_default_graph_as_union();
-
-        let store = self.store.clone();
-        tokio::task::spawn_blocking(move || {
-            let span = debug_span!("Indexable Triples Query", solutions = field::Empty).entered();
-            let query_results = if let Some(source) = &source {
-                sparql.on_queryable_dataset(source).execute()
-            } else {
-                sparql.on_store(&store).execute()
-            }
-            .expect("Unable to execute indexing query");
-
-            let mut results = HashMap::new();
-            if let QueryResults::Solutions(solutions) = query_results {
-                let mut counter = 0usize;
-                for solution in solutions.filter_map(Result::ok) {
-                    let individual = solution
-                        .get("individual")
-                        .and_then(conversion::term_to_named_node);
-                    let catalog_id = solution.get("categoryId").and_then(conversion::term_to_u64);
-                    let field_name = solution.get("fieldName").and_then(conversion::term_as_str);
-                    let field_value = solution.get("fieldValue").and_then(conversion::term_as_str);
-                    if let (
-                        Some(individual),
-                        Some(catalog_id),
-                        Some(field_name),
-                        Some(field_value),
-                    ) = (individual, catalog_id, field_name, field_value)
-                    {
-                        results
-                            .entry(individual.to_owned())
-                            .and_modify(|entry: &mut IndexEntry| {
-                                entry
-                                    .fields
-                                    .insert(field_name.to_owned(), field_value.to_owned());
-                            })
-                            .or_insert(IndexEntry {
-                                category_id: catalog_id,
-                                fields: HashMap::from_iter([(
-                                    field_name.to_owned(),
-                                    field_value.to_owned(),
-                                )]),
-                            });
-                    }
-                    counter += 1;
-                }
-                span.record("solutions", counter);
-            } else {
-                unreachable!()
-            }
-            results
-        })
-        .map_err(error::Error::from)
-    }
-
-    pub fn category_id(&self, class: &NamedNode) -> Option<u64> {
-        None
-        /*self.store
-            .quads_for_pattern(Some(class.into()), Some(gl::CATEGORY_ID), None, None)
-            .filter_map(Result::ok)
-            .map(conversion::quad_into_term)
-            .filter_map(conversion::term_into_u64)
-            .next()*/
-    }
-
-    pub fn fields_for_class(
-        &self,
-        class: &NamedNode,
-        language: &LanguageCondition,
-    ) -> error::Result<Vec<IndexField>> {
-        let language_filter = language.to_filter_expression("label");
-        let query = format!(
-            r#"SELECT DISTINCT ?name ?label {{
-    {class} gl:associatedProperty/gl:indexedByField ?field .
-
-    ?field gl:fieldName ?name ;
-    gl:fieldLabel ?label .
-
-    {language_filter}
-}}"#
-        );
-        let mut sparql = SparqlEvaluator::new()
-            .with_prefix("rdfs", "http://www.w3.org/2000/01/rdf-schema#")?
-            .with_prefix("gl", ONTOLOGY_PREFIX)?
-            .parse_query(&query)?;
-        sparql.dataset_mut().set_default_graph_as_union();
-
-        let mut results = Vec::new();
-        if let QueryResults::Solutions(solutions) = sparql.on_store(&self.store).execute()? {
-            for solution in solutions.filter_map(Result::ok) {
-                let name = solution.get("name").and_then(conversion::term_as_str);
-                let label = solution.get("label").and_then(conversion::term_as_str);
-
-                if let Some(name) = name
-                    && let Some(label) = label
-                {
-                    results.push(IndexField {
-                        name: name.to_string(),
-                        label: label.to_string(),
-                    });
-                }
-            }
-        }
-        Ok(results)
-    }
-
-    pub fn info(&self, iri: &NamedNode, language: &LanguageCondition) -> LabeledIri {
-        let label = self
-            .store
-            .quads_for_pattern(Some(iri.as_ref().into()), Some(rdfs::LABEL), None, None)
-            .filter_map(Result::ok)
-            .map(conversion::quad_into_term)
-            .filter(|term| language.primary_matches_term(term))
-            .filter_map(conversion::term_into_string)
-            .next()
-            .unwrap_or_default();
-
-        LabeledIri {
-            iri: iri.clone(),
-            label,
-        }
-    }
-
-    pub fn subclasses_of(&self, class: &NamedNode) -> BTreeSet<NamedNode> {
-        self.store
-            .quads_for_pattern(None, Some(rdfs::SUB_CLASS_OF), Some(class.into()), None)
-            .filter_map(Result::ok)
-            .filter_map(|quad| {
-                if let NamedOrBlankNode::NamedNode(subject) = quad.subject {
-                    Some(subject)
-                } else {
-                    None
-                }
-            })
-            .collect()
-    }
-
-    pub fn datatypes(&self) -> BTreeSet<NamedNode> {
-        self.store
-            .quads_for_pattern(
-                None,
-                Some(rdf::TYPE),
-                Some(TermRef::NamedNode(rdfs::DATATYPE)),
-                None,
-            )
-            .filter_map(Result::ok)
-            .filter_map(|quad| match quad.subject {
-                NamedOrBlankNode::NamedNode(subject) => Some(subject),
-                _ => None,
-            })
-            .collect()
-    }
-
-    pub fn is_read_only<'a>(&self, triple: impl Into<TripleRef<'a>>) -> bool {
-        let triple = triple.into();
-        let true_term = TermRef::Literal(LiteralRef::new_typed_literal("true", xsd::BOOLEAN));
-
-        let subject = match (triple.predicate, triple.object) {
-            (rdf::TYPE, TermRef::NamedNode(class)) => class,
-            (predicate, _) => predicate,
-        };
-
-        self.store
-            .quads_for_pattern(
-                Some(NamedOrBlankNodeRef::NamedNode(subject)),
-                Some(gl::READ_ONLY),
-                Some(true_term),
-                None,
-            )
-            .filter_map(Result::ok)
-            .count()
-            >= 1
-    }
-
-    pub fn exclude_read_only(&self) -> impl Fn(TripleRef<'_>) -> bool + 'static {
-        let true_term = TermRef::Literal(LiteralRef::new_typed_literal("true", xsd::BOOLEAN));
-        let read_only_graph = self
-            .store
-            .quads_for_pattern(None, Some(gl::READ_ONLY), Some(true_term), None)
-            .filter_map(Result::ok)
-            .map(Triple::from)
-            .collect::<Graph>();
-        move |triple| {
-            if triple.predicate == rdf::TYPE
-                && let TermRef::NamedNode(class) = triple.object
-            {
-                read_only_graph.triples_for_subject(class).count() == 0
-            } else {
-                read_only_graph
-                    .triples_for_subject(triple.predicate)
-                    .count()
-                    == 0
-            }
-        }
-    }
-}