Adopt new I/O API for parsing

fuzz/fuzz_targets/sparql_eval.rs

@@ -2,7 +2,7 @@
 
 use lazy_static::lazy_static;
 use libfuzzer_sys::fuzz_target;
-use oxigraph::io::DatasetFormat;
+use oxigraph::io::RdfFormat;
 use oxigraph::sparql::{Query, QueryOptions, QueryResults, QuerySolutionIter};
 use oxigraph::store::Store;
 
@@ -10,11 +10,7 @@ lazy_static! {
     static ref STORE: Store = {
         let store = Store::new().unwrap();
         store
-            .load_dataset(
+            .load_dataset(sparql_smith::DATA_TRIG.as_bytes(), RdfFormat::TriG, None)
-                sparql_smith::DATA_TRIG.as_bytes(),
-                DatasetFormat::TriG,
-                None,
-            )
             .unwrap();
         store
     };

js/src/store.rs

@@ -4,7 +4,7 @@ use crate::format_err;
 use crate::model::*;
 use crate::utils::to_err;
 use js_sys::{Array, Map};
-use oxigraph::io::{DatasetFormat, GraphFormat, RdfFormat};
+use oxigraph::io::RdfFormat;
 use oxigraph::model::*;
 use oxigraph::sparql::QueryResults;
 use oxigraph::store::Store;
@@ -148,6 +148,9 @@ impl JsStore {
         base_iri: &JsValue,
         to_graph_name: &JsValue,
     ) -> Result<(), JsValue> {
+        let Some(format) = RdfFormat::from_media_type(mime_type) else {
+            return Err(format_err!("Not supported MIME type: {mime_type}"));
+        };
         let base_iri = if base_iri.is_null() || base_iri.is_undefined() {
             None
         } else if base_iri.is_string() {
@@ -160,49 +163,28 @@ impl JsStore {
             ));
         };
 
-        let to_graph_name =
+        if let Some(to_graph_name) = FROM_JS.with(|c| c.to_optional_term(to_graph_name))? {
-            if let Some(graph_name) = FROM_JS.with(|c| c.to_optional_term(to_graph_name))? {
+            self.store.load_graph(
-                Some(graph_name.try_into()?)
+                data.as_bytes(),
-            } else {
+                format,
-                None
+                GraphName::try_from(to_graph_name)?,
-            };
+                base_iri.as_deref(),
-
+            )
-        if let Some(graph_format) = GraphFormat::from_media_type(mime_type) {
-            self.store
-                .load_graph(
-                    data.as_bytes(),
-                    graph_format,
-                    &to_graph_name.unwrap_or(GraphName::DefaultGraph),
-                    base_iri.as_deref(),
-                )
-                .map_err(to_err)
-        } else if let Some(dataset_format) = DatasetFormat::from_media_type(mime_type) {
-            if to_graph_name.is_some() {
-                return Err(format_err!(
-                    "The target graph name parameter is not available for dataset formats"
-                ));
-            }
-            self.store
-                .load_dataset(data.as_bytes(), dataset_format, base_iri.as_deref())
-                .map_err(to_err)
         } else {
-            Err(format_err!("Not supported MIME type: {mime_type}"))
+            self.store
+                .load_dataset(data.as_bytes(), format, base_iri.as_deref())
         }
+        .map_err(to_err)
     }
 
     pub fn dump(&self, mime_type: &str, from_graph_name: &JsValue) -> Result<String, JsValue> {
         let Some(format) = RdfFormat::from_media_type(mime_type) else {
             return Err(format_err!("Not supported MIME type: {mime_type}"));
         };
-        let from_graph_name =
-            if let Some(graph_name) = FROM_JS.with(|c| c.to_optional_term(from_graph_name))? {
-                Some(GraphName::try_from(graph_name)?)
-            } else {
-                None
-            };
         let mut buffer = Vec::new();
-        if let Some(from_graph_name) = &from_graph_name {
+        if let Some(from_graph_name) = FROM_JS.with(|c| c.to_optional_term(from_graph_name))? {
-            self.store.dump_graph(&mut buffer, format, from_graph_name)
+            self.store
+                .dump_graph(&mut buffer, format, &GraphName::try_from(from_graph_name)?)
         } else {
             self.store.dump_dataset(&mut buffer, format)
         }

js/test/store.mjs

@@ -186,7 +186,7 @@ describe("Store", function () {
 
         it("dump default graph content", function () {
             const store = new Store([dataModel.quad(ex, ex, ex, ex)]);
-            assert.strictEqual("", store.dump("application/n-triples"));
+            assert.strictEqual("", store.dump("application/n-triples", dataModel.defaultGraph()));
         });
     });
 });

lib/benches/store.rs

@@ -1,7 +1,7 @@
 use criterion::{criterion_group, criterion_main, Criterion, Throughput};
 use oxhttp::model::{Method, Request, Status};
-use oxigraph::io::GraphFormat;
+use oxigraph::io::RdfFormat;
-use oxigraph::model::GraphNameRef;
+use oxigraph::model::{GraphName, GraphNameRef};
 use oxigraph::sparql::{Query, QueryResults, Update};
 use oxigraph::store::Store;
 use rand::random;
@@ -63,12 +63,7 @@ fn store_load(c: &mut Criterion) {
 
 fn do_load(store: &Store, data: &[u8]) {
     store
-        .load_graph(
+        .load_graph(data, RdfFormat::NTriples, GraphName::DefaultGraph, None)
-            data,
-            GraphFormat::NTriples,
-            GraphNameRef::DefaultGraph,
-            None,
-        )
         .unwrap();
     store.optimize().unwrap();
 }
@@ -76,12 +71,7 @@ fn do_load(store: &Store, data: &[u8]) {
 fn do_bulk_load(store: &Store, data: &[u8]) {
     store
         .bulk_loader()
-        .load_graph(
+        .load_graph(data, RdfFormat::NTriples, GraphNameRef::DefaultGraph, None)
-            data,
-            GraphFormat::NTriples,
-            GraphNameRef::DefaultGraph,
-            None,
-        )
         .unwrap();
     store.optimize().unwrap();
 }

lib/src/io/error.rs

@@ -1,134 +0,0 @@
-use oxiri::IriParseError;
-use std::error::Error;
-use std::{fmt, io};
-
-/// Error returned during RDF format parsing.
-#[derive(Debug)]
-pub enum ParseError {
-    /// I/O error during parsing (file not found...).
-    Io(io::Error),
-    /// An error in the file syntax.
-    Syntax(SyntaxError),
-}
-
-impl ParseError {
-    #[inline]
-    pub(crate) fn invalid_base_iri(iri: &str, error: IriParseError) -> Self {
-        Self::Syntax(SyntaxError {
-            inner: SyntaxErrorKind::InvalidBaseIri {
-                iri: iri.to_owned(),
-                error,
-            },
-        })
-    }
-}
-
-impl fmt::Display for ParseError {
-    #[inline]
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        match self {
-            Self::Io(e) => e.fmt(f),
-            Self::Syntax(e) => e.fmt(f),
-        }
-    }
-}
-
-impl Error for ParseError {
-    #[inline]
-    fn source(&self) -> Option<&(dyn Error + 'static)> {
-        match self {
-            Self::Io(e) => Some(e),
-            Self::Syntax(e) => Some(e),
-        }
-    }
-}
-
-impl From<oxrdfio::SyntaxError> for SyntaxError {
-    #[inline]
-    fn from(error: oxrdfio::SyntaxError) -> Self {
-        SyntaxError {
-            inner: SyntaxErrorKind::IO(error),
-        }
-    }
-}
-
-impl From<oxrdfio::ParseError> for ParseError {
-    #[inline]
-    fn from(error: oxrdfio::ParseError) -> Self {
-        match error {
-            oxrdfio::ParseError::Syntax(e) => Self::Syntax(e.into()),
-            oxrdfio::ParseError::Io(e) => Self::Io(e),
-        }
-    }
-}
-
-impl From<io::Error> for ParseError {
-    #[inline]
-    fn from(error: io::Error) -> Self {
-        Self::Io(error)
-    }
-}
-
-impl From<SyntaxError> for ParseError {
-    #[inline]
-    fn from(error: SyntaxError) -> Self {
-        Self::Syntax(error)
-    }
-}
-
-impl From<ParseError> for io::Error {
-    #[inline]
-    fn from(error: ParseError) -> Self {
-        match error {
-            ParseError::Io(error) => error,
-            ParseError::Syntax(error) => error.into(),
-        }
-    }
-}
-
-/// An error in the syntax of the parsed file.
-#[derive(Debug)]
-pub struct SyntaxError {
-    inner: SyntaxErrorKind,
-}
-
-#[derive(Debug)]
-enum SyntaxErrorKind {
-    IO(oxrdfio::SyntaxError),
-    InvalidBaseIri { iri: String, error: IriParseError },
-}
-
-impl fmt::Display for SyntaxError {
-    #[inline]
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        match &self.inner {
-            SyntaxErrorKind::IO(e) => e.fmt(f),
-            SyntaxErrorKind::InvalidBaseIri { iri, error } => {
-                write!(f, "Invalid base IRI '{iri}': {error}")
-            }
-        }
-    }
-}
-
-impl Error for SyntaxError {
-    #[inline]
-    fn source(&self) -> Option<&(dyn Error + 'static)> {
-        match &self.inner {
-            SyntaxErrorKind::IO(e) => Some(e),
-            SyntaxErrorKind::InvalidBaseIri { .. } => None,
-        }
-    }
-}
-
-impl From<SyntaxError> for io::Error {
-    #[inline]
-    fn from(error: SyntaxError) -> Self {
-        match error.inner {
-            SyntaxErrorKind::IO(error) => error.into(),
-            SyntaxErrorKind::InvalidBaseIri { iri, error } => Self::new(
-                io::ErrorKind::InvalidInput,
-                format!("Invalid IRI '{iri}': {error}"),
-            ),
-        }
-    }
-}

lib/src/io/format.rs

@@ -1,3 +1,5 @@
+#![allow(deprecated)]
+
 use oxrdfio::RdfFormat;
 
 /// [RDF graph](https://www.w3.org/TR/rdf11-concepts/#dfn-rdf-graph) serialization formats.
@@ -5,6 +7,7 @@ use oxrdfio::RdfFormat;
 /// This enumeration is non exhaustive. New formats like JSON-LD will be added in the future.
 #[derive(Eq, PartialEq, Debug, Clone, Copy, Hash)]
 #[non_exhaustive]
+#[deprecated(note = "Use RdfFormat instead")]
 pub enum GraphFormat {
     /// [N-Triples](https://www.w3.org/TR/n-triples/)
     NTriples,
@@ -119,6 +122,7 @@ impl From<GraphFormat> for RdfFormat {
 /// This enumeration is non exhaustive. New formats like JSON-LD will be added in the future.
 #[derive(Eq, PartialEq, Debug, Clone, Copy, Hash)]
 #[non_exhaustive]
+#[deprecated(note = "Use RdfFormat instead")]
 pub enum DatasetFormat {
     /// [N-Quads](https://www.w3.org/TR/n-quads/)
     NQuads,

lib/src/io/mod.rs

@@ -1,11 +1,12 @@
 //! Utilities to read and write RDF graphs and datasets.
 
-mod error;
 mod format;
 pub mod read;
 pub mod write;
 
+#[allow(deprecated)]
 pub use self::format::{DatasetFormat, GraphFormat};
+#[allow(deprecated)]
 pub use self::read::{DatasetParser, GraphParser};
 #[allow(deprecated)]
 pub use self::write::{DatasetSerializer, GraphSerializer};

lib/src/io/read.rs

@@ -1,10 +1,11 @@
+#![allow(deprecated)]
+
 //! Utilities to read RDF graphs and datasets.
 
-pub use crate::io::error::{ParseError, SyntaxError};
 use crate::io::{DatasetFormat, GraphFormat};
 use crate::model::*;
 use oxiri::IriParseError;
-use oxrdfio::{FromReadQuadReader, RdfParser};
+use oxrdfio::{FromReadQuadReader, ParseError, RdfParser};
 use std::io::Read;
 
 /// Parsers for RDF graph serialization formats.
@@ -26,6 +27,7 @@ use std::io::Read;
 /// assert_eq!(triples[0].subject.to_string(), "<http://example.com/s>");
 /// # std::io::Result::Ok(())
 /// ```
+#[deprecated(note = "Use RdfParser instead")]
 pub struct GraphParser {
     inner: RdfParser,
 }
@@ -116,6 +118,7 @@ impl<R: Read> Iterator for TripleReader<R> {
 /// assert_eq!(quads[0].subject.to_string(), "<http://example.com/s>");
 /// # std::io::Result::Ok(())
 /// ```
+#[deprecated(note = "Use RdfParser instead")]
 pub struct DatasetParser {
     inner: RdfParser,
 }

lib/src/lib.rs

@@ -1,5 +1,6 @@
 #![doc = include_str!("../README.md")]
 #![doc(test(attr(deny(warnings))))]
+#![doc(test(attr(allow(deprecated))))]
 #![cfg_attr(docsrs, feature(doc_auto_cfg))]
 #![doc(html_favicon_url = "https://raw.githubusercontent.com/oxigraph/oxigraph/main/logo.svg")]
 #![doc(html_logo_url = "https://raw.githubusercontent.com/oxigraph/oxigraph/main/logo.svg")]

lib/src/sparql/model.rs

@@ -95,13 +95,13 @@ impl QueryResults {
     ///
     /// ```
     /// use oxigraph::store::Store;
-    /// use oxigraph::io::{RdfFormat, GraphFormat};
+    /// use oxigraph::io::RdfFormat;
     /// use oxigraph::model::*;
     ///
     /// let graph = "<http://example.com> <http://example.com> <http://example.com> .\n";
     ///
     /// let store = Store::new()?;
-    /// store.load_graph(graph.as_bytes(), GraphFormat::NTriples, GraphNameRef::DefaultGraph, None)?;
+    /// store.load_graph(graph.as_bytes(), RdfFormat::NTriples, GraphName::DefaultGraph, None)?;
     ///
     /// let mut results = Vec::new();
     /// store.query("CONSTRUCT WHERE { ?s ?p ?o }")?.write_graph(&mut results, RdfFormat::NTriples)?;

lib/src/storage/error.rs

@@ -1,4 +1,5 @@
-use crate::io::{read::ParseError, RdfFormat};
+use crate::io::{ParseError, RdfFormat};
+use oxiri::IriParseError;
 use std::error::Error;
 use std::fmt;
 use std::io;
@@ -126,6 +127,8 @@ pub enum LoaderError {
     Parsing(ParseError),
     /// An error raised during the insertion in the store.
     Storage(StorageError),
+    /// The base IRI is invalid.
+    InvalidBaseIri { iri: String, error: IriParseError },
 }
 
 impl fmt::Display for LoaderError {
@@ -134,6 +137,7 @@ impl fmt::Display for LoaderError {
         match self {
             Self::Parsing(e) => e.fmt(f),
             Self::Storage(e) => e.fmt(f),
+            Self::InvalidBaseIri { iri, error } => write!(f, "Invalid base IRI '{iri}': {error}"),
         }
     }
 }
@@ -144,6 +148,7 @@ impl Error for LoaderError {
         match self {
             Self::Parsing(e) => Some(e),
             Self::Storage(e) => Some(e),
+            Self::InvalidBaseIri { error, .. } => Some(error),
         }
     }
 }
@@ -168,6 +173,9 @@ impl From<LoaderError> for io::Error {
         match error {
             LoaderError::Storage(error) => error.into(),
             LoaderError::Parsing(error) => error.into(),
+            LoaderError::InvalidBaseIri { .. } => {
+                io::Error::new(io::ErrorKind::InvalidInput, error.to_string())
+            }
         }
     }
 }

lib/src/store.rs

@@ -23,8 +23,9 @@
 //! };
 //! # Result::<_, Box<dyn std::error::Error>>::Ok(())
 //! ```
-use crate::io::read::ParseError;
+#[cfg(not(target_family = "wasm"))]
-use crate::io::{DatasetFormat, DatasetParser, GraphFormat, GraphParser, RdfFormat, RdfSerializer};
+use crate::io::ParseError;
+use crate::io::{RdfFormat, RdfParser, RdfSerializer};
 use crate::model::*;
 use crate::sparql::{
     evaluate_query, evaluate_update, EvaluationError, Query, QueryExplanation, QueryOptions,
@@ -451,38 +452,43 @@ impl Store {
     /// Usage example:
     /// ```
     /// use oxigraph::store::Store;
-    /// use oxigraph::io::GraphFormat;
+    /// use oxigraph::io::RdfFormat;
     /// use oxigraph::model::*;
     ///
     /// let store = Store::new()?;
     ///
     /// // insertion
     /// let file = b"<http://example.com> <http://example.com> <http://example.com> .";
-    /// store.load_graph(file.as_ref(), GraphFormat::NTriples, GraphNameRef::DefaultGraph, None)?;
+    /// store.load_graph(file.as_ref(), RdfFormat::NTriples, GraphName::DefaultGraph, None)?;
     ///
     /// // we inspect the store contents
     /// let ex = NamedNodeRef::new("http://example.com")?;
     /// assert!(store.contains(QuadRef::new(ex, ex, ex, GraphNameRef::DefaultGraph))?);
     /// # Result::<_, Box<dyn std::error::Error>>::Ok(())
     /// ```
-    pub fn load_graph<'a>(
+    pub fn load_graph(
         &self,
-        reader: impl Read,
+        read: impl Read,
-        format: GraphFormat,
+        format: impl Into<RdfFormat>,
-        to_graph_name: impl Into<GraphNameRef<'a>>,
+        to_graph_name: impl Into<GraphName>,
         base_iri: Option<&str>,
     ) -> Result<(), LoaderError> {
-        let mut parser = GraphParser::from_format(format);
+        let mut parser = RdfParser::from_format(format.into())
+            .without_named_graphs()
+            .with_default_graph(to_graph_name)
+            .rename_blank_nodes();
         if let Some(base_iri) = base_iri {
             parser = parser
                 .with_base_iri(base_iri)
-                .map_err(|e| ParseError::invalid_base_iri(base_iri, e))?;
+                .map_err(|e| LoaderError::InvalidBaseIri {
+                    iri: base_iri.into(),
+                    error: e,
+                })?;
         }
-        let quads = parser.read_triples(reader).collect::<Result<Vec<_>, _>>()?;
+        let quads = parser.parse_read(read).collect::<Result<Vec<_>, _>>()?;
-        let to_graph_name = to_graph_name.into();
         self.storage.transaction(move |mut t| {
             for quad in &quads {
-                t.insert(quad.as_ref().in_graph(to_graph_name))?;
+                t.insert(quad.as_ref())?;
             }
             Ok(())
         })
@@ -495,14 +501,14 @@ impl Store {
     /// Usage example:
     /// ```
     /// use oxigraph::store::Store;
-    /// use oxigraph::io::DatasetFormat;
+    /// use oxigraph::io::RdfFormat;
     /// use oxigraph::model::*;
     ///
     /// let store = Store::new()?;
     ///
     /// // insertion
     /// let file = b"<http://example.com> <http://example.com> <http://example.com> <http://example.com> .";
-    /// store.load_dataset(file.as_ref(), DatasetFormat::NQuads, None)?;
+    /// store.load_dataset(file.as_ref(), RdfFormat::NQuads, None)?;
     ///
     /// // we inspect the store contents
     /// let ex = NamedNodeRef::new("http://example.com")?;
@@ -511,20 +517,23 @@ impl Store {
     /// ```
     pub fn load_dataset(
         &self,
-        reader: impl Read,
+        read: impl Read,
-        format: DatasetFormat,
+        format: impl Into<RdfFormat>,
         base_iri: Option<&str>,
     ) -> Result<(), LoaderError> {
-        let mut parser = DatasetParser::from_format(format);
+        let mut parser = RdfParser::from_format(format.into()).rename_blank_nodes();
         if let Some(base_iri) = base_iri {
             parser = parser
                 .with_base_iri(base_iri)
-                .map_err(|e| ParseError::invalid_base_iri(base_iri, e))?;
+                .map_err(|e| LoaderError::InvalidBaseIri {
+                    iri: base_iri.into(),
+                    error: e,
+                })?;
         }
-        let quads = parser.read_quads(reader).collect::<Result<Vec<_>, _>>()?;
+        let quads = parser.parse_read(read).collect::<Result<Vec<_>, _>>()?;
         self.storage.transaction(move |mut t| {
             for quad in &quads {
-                t.insert(quad.into())?;
+                t.insert(quad.as_ref())?;
             }
             Ok(())
         })
@@ -595,16 +604,16 @@ impl Store {
     /// Usage example:
     /// ```
     /// use oxigraph::store::Store;
-    /// use oxigraph::io::GraphFormat;
+    /// use oxigraph::io::RdfFormat;
-    /// use oxigraph::model::GraphNameRef;
+    /// use oxigraph::model::*;
     ///
     /// let file = "<http://example.com> <http://example.com> <http://example.com> .\n".as_bytes();
     ///
     /// let store = Store::new()?;
-    /// store.load_graph(file, GraphFormat::NTriples, GraphNameRef::DefaultGraph, None)?;
+    /// store.load_graph(file, RdfFormat::NTriples, GraphName::DefaultGraph, None)?;
     ///
     /// let mut buffer = Vec::new();
-    /// store.dump_graph(&mut buffer, GraphFormat::NTriples, GraphNameRef::DefaultGraph)?;
+    /// store.dump_graph(&mut buffer, RdfFormat::NTriples, GraphNameRef::DefaultGraph)?;
     /// assert_eq!(file, buffer.as_slice());
     /// # std::io::Result::Ok(())
     /// ```
@@ -626,15 +635,15 @@ impl Store {
     ///    
     /// ```
     /// use oxigraph::store::Store;
-    /// use oxigraph::io::DatasetFormat;
+    /// use oxigraph::io::RdfFormat;
     ///
     /// let file = "<http://example.com> <http://example.com> <http://example.com> <http://example.com> .\n".as_bytes();
     ///
     /// let store = Store::new()?;
-    /// store.load_dataset(file, DatasetFormat::NQuads, None)?;
+    /// store.load_dataset(file, RdfFormat::NQuads, None)?;
     ///
     /// let mut buffer = Vec::new();
-    /// store.dump_dataset(&mut buffer, DatasetFormat::NQuads)?;
+    /// store.dump_dataset(&mut buffer, RdfFormat::NQuads)?;
     /// assert_eq!(file, buffer.as_slice());
     /// # std::io::Result::Ok(())
     /// ```
@@ -841,14 +850,14 @@ impl Store {
     /// Usage example:
     /// ```
     /// use oxigraph::store::Store;
-    /// use oxigraph::io::DatasetFormat;
+    /// use oxigraph::io::RdfFormat;
     /// use oxigraph::model::*;
     ///
     /// let store = Store::new()?;
     ///
     /// // quads file insertion
     /// let file = b"<http://example.com> <http://example.com> <http://example.com> <http://example.com> .";
-    /// store.bulk_loader().load_dataset(file.as_ref(), DatasetFormat::NQuads, None)?;
+    /// store.bulk_loader().load_dataset(file.as_ref(), RdfFormat::NQuads, None)?;
     ///
     /// // we inspect the store contents
     /// let ex = NamedNodeRef::new("http://example.com")?;
@@ -1061,7 +1070,7 @@ impl<'a> Transaction<'a> {
     /// Usage example:
     /// ```
     /// use oxigraph::store::Store;
-    /// use oxigraph::io::GraphFormat;
+    /// use oxigraph::io::RdfFormat;
     /// use oxigraph::model::*;
     ///
     /// let store = Store::new()?;
@@ -1069,7 +1078,7 @@ impl<'a> Transaction<'a> {
     /// // insertion
     /// let file = b"<http://example.com> <http://example.com> <http://example.com> .";
     /// store.transaction(|mut transaction| {
-    ///     transaction.load_graph(file.as_ref(), GraphFormat::NTriples, GraphNameRef::DefaultGraph, None)
+    ///     transaction.load_graph(file.as_ref(), RdfFormat::NTriples, GraphName::DefaultGraph, None)
     /// })?;
     ///
     /// // we inspect the store contents
@@ -1077,23 +1086,27 @@ impl<'a> Transaction<'a> {
     /// assert!(store.contains(QuadRef::new(ex, ex, ex, GraphNameRef::DefaultGraph))?);
     /// # Result::<_,oxigraph::store::LoaderError>::Ok(())
     /// ```
-    pub fn load_graph<'b>(
+    pub fn load_graph(
         &mut self,
-        reader: impl Read,
+        read: impl Read,
-        format: GraphFormat,
+        format: impl Into<RdfFormat>,
-        to_graph_name: impl Into<GraphNameRef<'b>>,
+        to_graph_name: impl Into<GraphName>,
         base_iri: Option<&str>,
     ) -> Result<(), LoaderError> {
-        let mut parser = GraphParser::from_format(format);
+        let mut parser = RdfParser::from_format(format.into())
+            .without_named_graphs()
+            .with_default_graph(to_graph_name)
+            .rename_blank_nodes();
         if let Some(base_iri) = base_iri {
             parser = parser
                 .with_base_iri(base_iri)
-                .map_err(|e| ParseError::invalid_base_iri(base_iri, e))?;
+                .map_err(|e| LoaderError::InvalidBaseIri {
+                    iri: base_iri.into(),
+                    error: e,
+                })?;
         }
-        let to_graph_name = to_graph_name.into();
+        for quad in parser.parse_read(read) {
-        for triple in parser.read_triples(reader) {
+            self.writer.insert(quad?.as_ref())?;
-            self.writer
-                .insert(triple?.as_ref().in_graph(to_graph_name))?;
         }
         Ok(())
     }
@@ -1103,7 +1116,7 @@ impl<'a> Transaction<'a> {
     /// Usage example:
     /// ```
     /// use oxigraph::store::Store;
-    /// use oxigraph::io::DatasetFormat;
+    /// use oxigraph::io::RdfFormat;
     /// use oxigraph::model::*;
     ///
     /// let store = Store::new()?;
@@ -1111,7 +1124,7 @@ impl<'a> Transaction<'a> {
     /// // insertion
     /// let file = b"<http://example.com> <http://example.com> <http://example.com> <http://example.com> .";
     /// store.transaction(|mut transaction| {
-    ///     transaction.load_dataset(file.as_ref(), DatasetFormat::NQuads, None)
+    ///     transaction.load_dataset(file.as_ref(), RdfFormat::NQuads, None)
     /// })?;
     ///
     /// // we inspect the store contents
@@ -1121,17 +1134,20 @@ impl<'a> Transaction<'a> {
     /// ```
     pub fn load_dataset(
         &mut self,
-        reader: impl Read,
+        read: impl Read,
-        format: DatasetFormat,
+        format: impl Into<RdfFormat>,
         base_iri: Option<&str>,
     ) -> Result<(), LoaderError> {
-        let mut parser = DatasetParser::from_format(format);
+        let mut parser = RdfParser::from_format(format.into()).rename_blank_nodes();
         if let Some(base_iri) = base_iri {
             parser = parser
                 .with_base_iri(base_iri)
-                .map_err(|e| ParseError::invalid_base_iri(base_iri, e))?;
+                .map_err(|e| LoaderError::InvalidBaseIri {
+                    iri: base_iri.into(),
+                    error: e,
+                })?;
         }
-        for quad in parser.read_quads(reader) {
+        for quad in parser.parse_read(read) {
             self.writer.insert(quad?.as_ref())?;
         }
         Ok(())
@@ -1365,14 +1381,14 @@ impl Iterator for GraphNameIter {
 /// Usage example with loading a dataset:
 /// ```
 /// use oxigraph::store::Store;
-/// use oxigraph::io::DatasetFormat;
+/// use oxigraph::io::RdfFormat;
 /// use oxigraph::model::*;
 ///
 /// let store = Store::new()?;
 ///
 /// // quads file insertion
 /// let file = b"<http://example.com> <http://example.com> <http://example.com> <http://example.com> .";
-/// store.bulk_loader().load_dataset(file.as_ref(), DatasetFormat::NQuads, None)?;
+/// store.bulk_loader().load_dataset(file.as_ref(), RdfFormat::NQuads, None)?;
 ///
 /// // we inspect the store contents
 /// let ex = NamedNodeRef::new("http://example.com")?;
@@ -1448,14 +1464,14 @@ impl BulkLoader {
     /// Usage example:
     /// ```
     /// use oxigraph::store::Store;
-    /// use oxigraph::io::DatasetFormat;
+    /// use oxigraph::io::RdfFormat;
     /// use oxigraph::model::*;
     ///
     /// let store = Store::new()?;
     ///
     /// // insertion
     /// let file = b"<http://example.com> <http://example.com> <http://example.com> <http://example.com> .";
-    /// store.bulk_loader().load_dataset(file.as_ref(), DatasetFormat::NQuads, None)?;
+    /// store.bulk_loader().load_dataset(file.as_ref(), RdfFormat::NQuads, None)?;
     ///
     /// // we inspect the store contents
     /// let ex = NamedNodeRef::new("http://example.com")?;
@@ -1464,17 +1480,20 @@ impl BulkLoader {
     /// ```
     pub fn load_dataset(
         &self,
-        reader: impl Read,
+        read: impl Read,
-        format: DatasetFormat,
+        format: impl Into<RdfFormat>,
         base_iri: Option<&str>,
     ) -> Result<(), LoaderError> {
-        let mut parser = DatasetParser::from_format(format);
+        let mut parser = RdfParser::from_format(format.into()).rename_blank_nodes();
         if let Some(base_iri) = base_iri {
             parser = parser
                 .with_base_iri(base_iri)
-                .map_err(|e| ParseError::invalid_base_iri(base_iri, e))?;
+                .map_err(|e| LoaderError::InvalidBaseIri {
+                    iri: base_iri.into(),
+                    error: e,
+                })?;
         }
-        self.load_ok_quads(parser.read_quads(reader).filter_map(|r| match r {
+        self.load_ok_quads(parser.parse_read(read).filter_map(|r| match r {
             Ok(q) => Some(Ok(q)),
             Err(e) => {
                 if let Some(callback) = &self.on_parse_error {
@@ -1503,36 +1522,41 @@ impl BulkLoader {
     /// Usage example:
     /// ```
     /// use oxigraph::store::Store;
-    /// use oxigraph::io::GraphFormat;
+    /// use oxigraph::io::RdfFormat;
     /// use oxigraph::model::*;
     ///
     /// let store = Store::new()?;
     ///
     /// // insertion
     /// let file = b"<http://example.com> <http://example.com> <http://example.com> .";
-    /// store.bulk_loader().load_graph(file.as_ref(), GraphFormat::NTriples, GraphNameRef::DefaultGraph, None)?;
+    /// store.bulk_loader().load_graph(file.as_ref(), RdfFormat::NTriples, GraphName::DefaultGraph, None)?;
     ///
     /// // we inspect the store contents
     /// let ex = NamedNodeRef::new("http://example.com")?;
     /// assert!(store.contains(QuadRef::new(ex, ex, ex, GraphNameRef::DefaultGraph))?);
     /// # Result::<_, Box<dyn std::error::Error>>::Ok(())
     /// ```
-    pub fn load_graph<'a>(
+    pub fn load_graph(
         &self,
-        reader: impl Read,
+        read: impl Read,
-        format: GraphFormat,
+        format: impl Into<RdfFormat>,
-        to_graph_name: impl Into<GraphNameRef<'a>>,
+        to_graph_name: impl Into<GraphName>,
         base_iri: Option<&str>,
     ) -> Result<(), LoaderError> {
-        let mut parser = GraphParser::from_format(format);
+        let mut parser = RdfParser::from_format(format.into())
+            .without_named_graphs()
+            .with_default_graph(to_graph_name)
+            .rename_blank_nodes();
         if let Some(base_iri) = base_iri {
             parser = parser
                 .with_base_iri(base_iri)
-                .map_err(|e| ParseError::invalid_base_iri(base_iri, e))?;
+                .map_err(|e| LoaderError::InvalidBaseIri {
+                    iri: base_iri.into(),
+                    error: e,
+                })?;
         }
-        let to_graph_name = to_graph_name.into();
+        self.load_ok_quads(parser.parse_read(read).filter_map(|r| match r {
-        self.load_ok_quads(parser.read_triples(reader).filter_map(|r| match r {
+            Ok(q) => Some(Ok(q)),
-            Ok(q) => Some(Ok(q.in_graph(to_graph_name.into_owned()))),
             Err(e) => {
                 if let Some(callback) = &self.on_parse_error {
                     if let Err(e) = callback(e) {

lib/tests/store.rs

@@ -1,4 +1,4 @@
-use oxigraph::io::{DatasetFormat, GraphFormat, RdfFormat};
+use oxigraph::io::RdfFormat;
 use oxigraph::model::vocab::{rdf, xsd};
 use oxigraph::model::*;
 use oxigraph::store::Store;
@@ -109,7 +109,7 @@ fn test_load_graph() -> Result<(), Box<dyn Error>> {
     let store = Store::new()?;
     store.load_graph(
         DATA.as_bytes(),
-        GraphFormat::Turtle,
+        RdfFormat::Turtle,
         GraphNameRef::DefaultGraph,
         None,
     )?;
@@ -126,8 +126,8 @@ fn test_bulk_load_graph() -> Result<(), Box<dyn Error>> {
     let store = Store::new()?;
     store.bulk_loader().load_graph(
         DATA.as_bytes(),
-        GraphFormat::Turtle,
+        RdfFormat::Turtle,
-        GraphNameRef::DefaultGraph,
+        GraphName::DefaultGraph,
         None,
     )?;
     for q in quads(GraphNameRef::DefaultGraph) {
@@ -143,8 +143,8 @@ fn test_bulk_load_graph_lenient() -> Result<(), Box<dyn Error>> {
     let store = Store::new()?;
     store.bulk_loader().on_parse_error(|_| Ok(())).load_graph(
         b"<http://example.com> <http://example.com> <http://example.com##> .\n<http://example.com> <http://example.com> <http://example.com> .".as_slice(),
-        GraphFormat::NTriples,
+        RdfFormat::NTriples,
-        GraphNameRef::DefaultGraph,
+        GraphName::DefaultGraph,
         None,
     )?;
     assert_eq!(store.len()?, 1);
@@ -161,7 +161,7 @@ fn test_bulk_load_graph_lenient() -> Result<(), Box<dyn Error>> {
 #[test]
 fn test_load_dataset() -> Result<(), Box<dyn Error>> {
     let store = Store::new()?;
-    store.load_dataset(GRAPH_DATA.as_bytes(), DatasetFormat::TriG, None)?;
+    store.load_dataset(GRAPH_DATA.as_bytes(), RdfFormat::TriG, None)?;
     for q in quads(NamedNodeRef::new_unchecked(
         "http://www.wikidata.org/wiki/Special:EntityData/Q90",
     )) {
@@ -177,7 +177,7 @@ fn test_bulk_load_dataset() -> Result<(), Box<dyn Error>> {
     let store = Store::new()?;
     store
         .bulk_loader()
-        .load_dataset(GRAPH_DATA.as_bytes(), DatasetFormat::TriG, None)?;
+        .load_dataset(GRAPH_DATA.as_bytes(), RdfFormat::TriG, None)?;
     let graph_name =
         NamedNodeRef::new_unchecked("http://www.wikidata.org/wiki/Special:EntityData/Q90");
     for q in quads(graph_name) {
@@ -194,8 +194,8 @@ fn test_load_graph_generates_new_blank_nodes() -> Result<(), Box<dyn Error>> {
     for _ in 0..2 {
         store.load_graph(
             "_:a <http://example.com/p> <http://example.com/p> .".as_bytes(),
-            GraphFormat::NTriples,
+            RdfFormat::NTriples,
-            GraphNameRef::DefaultGraph,
+            GraphName::DefaultGraph,
             None,
         )?;
     }

python/src/io.rs

@@ -1,10 +1,7 @@
 #![allow(clippy::needless_option_as_deref)]
 
 use crate::model::{PyQuad, PyTriple};
-use oxigraph::io::read::{ParseError, QuadReader, TripleReader};
+use oxigraph::io::{FromReadQuadReader, ParseError, RdfFormat, RdfParser, RdfSerializer};
-use oxigraph::io::{
-    DatasetFormat, DatasetParser, GraphFormat, GraphParser, RdfFormat, RdfSerializer,
-};
 use oxigraph::model::QuadRef;
 use pyo3::exceptions::{PyIOError, PySyntaxError, PyValueError};
 use pyo3::prelude::*;
@@ -41,54 +38,54 @@ pub fn add_to_module(module: &PyModule) -> PyResult<()> {
 /// :type mime_type: str
 /// :param base_iri: the base IRI used to resolve the relative IRIs in the file or :py:const:`None` if relative IRI resolution should not be done.
 /// :type base_iri: str or None, optional
+/// :param without_named_graphs: Sets that the parser must fail if parsing a named graph.
+/// :type without_named_graphs: bool, optional
+/// :param rename_blank_nodes: Renames the blank nodes ids from the ones set in the serialization to random ids. This allows to avoid id conflicts when merging graphs together.
+/// :type rename_blank_nodes: bool, optional
 /// :return: an iterator of RDF triples or quads depending on the format.
-/// :rtype: iterator(Triple) or iterator(Quad)
+/// :rtype: iterator(Quad)
 /// :raises ValueError: if the MIME type is not supported.
 /// :raises SyntaxError: if the provided data is invalid.
 ///
 /// >>> input = io.BytesIO(b'<foo> <p> "1" .')
 /// >>> list(parse(input, "text/turtle", base_iri="http://example.com/"))
-/// [<Triple subject=<NamedNode value=http://example.com/foo> predicate=<NamedNode value=http://example.com/p> object=<Literal value=1 datatype=<NamedNode value=http://www.w3.org/2001/XMLSchema#string>>>]
+/// [<Quad subject=<NamedNode value=http://example.com/foo> predicate=<NamedNode value=http://example.com/p> object=<Literal value=1 datatype=<NamedNode value=http://www.w3.org/2001/XMLSchema#string>> graph_name=<DefaultGraph>>]
 #[pyfunction]
-#[pyo3(signature = (input, mime_type, *, base_iri = None))]
+#[pyo3(signature = (input, mime_type, *, base_iri = None, without_named_graphs = false, rename_blank_nodes = false))]
 pub fn parse(
     input: PyObject,
     mime_type: &str,
     base_iri: Option<&str>,
+    without_named_graphs: bool,
+    rename_blank_nodes: bool,
     py: Python<'_>,
 ) -> PyResult<PyObject> {
+    let Some(format) = RdfFormat::from_media_type(mime_type) else {
+        return Err(PyValueError::new_err(format!(
+            "Not supported MIME type: {mime_type}"
+        )));
+    };
     let input = if let Ok(path) = input.extract::<PathBuf>(py) {
         PyReadable::from_file(&path, py).map_err(map_io_err)?
     } else {
         PyReadable::from_data(input, py)
     };
-    if let Some(graph_format) = GraphFormat::from_media_type(mime_type) {
+    let mut parser = RdfParser::from_format(format);
-        let mut parser = GraphParser::from_format(graph_format);
+    if let Some(base_iri) = base_iri {
-        if let Some(base_iri) = base_iri {
+        parser = parser
-            parser = parser
+            .with_base_iri(base_iri)
-                .with_base_iri(base_iri)
+            .map_err(|e| PyValueError::new_err(e.to_string()))?;
-                .map_err(|e| PyValueError::new_err(e.to_string()))?;
-        }
-        Ok(PyTripleReader {
-            inner: parser.read_triples(input),
-        }
-        .into_py(py))
-    } else if let Some(dataset_format) = DatasetFormat::from_media_type(mime_type) {
-        let mut parser = DatasetParser::from_format(dataset_format);
-        if let Some(base_iri) = base_iri {
-            parser = parser
-                .with_base_iri(base_iri)
-                .map_err(|e| PyValueError::new_err(e.to_string()))?;
-        }
-        Ok(PyQuadReader {
-            inner: parser.read_quads(input),
-        }
-        .into_py(py))
-    } else {
-        Err(PyValueError::new_err(format!(
-            "Not supported MIME type: {mime_type}"
-        )))
     }
+    if without_named_graphs {
+        parser = parser.without_named_graphs();
+    }
+    if rename_blank_nodes {
+        parser = parser.rename_blank_nodes();
+    }
+    Ok(PyQuadReader {
+        inner: parser.parse_read(input),
+    }
+    .into_py(py))
 }
 
 /// Serializes an RDF graph or dataset.
@@ -151,30 +148,9 @@ pub fn serialize(input: &PyAny, output: PyObject, mime_type: &str, py: Python<'_
     writer.finish().map_err(map_io_err)
 }
 
-#[pyclass(name = "TripleReader", module = "pyoxigraph")]
-pub struct PyTripleReader {
-    inner: TripleReader<PyReadable>,
-}
-
-#[pymethods]
-impl PyTripleReader {
-    fn __iter__(slf: PyRef<'_, Self>) -> PyRef<Self> {
-        slf
-    }
-
-    fn __next__(&mut self, py: Python<'_>) -> PyResult<Option<PyTriple>> {
-        py.allow_threads(|| {
-            self.inner
-                .next()
-                .map(|q| Ok(q.map_err(map_parse_error)?.into()))
-                .transpose()
-        })
-    }
-}
-
 #[pyclass(name = "QuadReader", module = "pyoxigraph")]
 pub struct PyQuadReader {
-    inner: QuadReader<PyReadable>,
+    inner: FromReadQuadReader<PyReadable>,
 }
 
 #[pymethods]

python/src/store.rs

@@ -3,7 +3,7 @@
 use crate::io::{allow_threads_unsafe, map_io_err, map_parse_error, PyReadable, PyWritable};
 use crate::model::*;
 use crate::sparql::*;
-use oxigraph::io::{DatasetFormat, GraphFormat, RdfFormat};
+use oxigraph::io::RdfFormat;
 use oxigraph::model::{GraphName, GraphNameRef};
 use oxigraph::sparql::Update;
 use oxigraph::store::{self, LoaderError, SerializerError, StorageError, Store};
@@ -366,7 +366,7 @@ impl PyStore {
     /// :param to_graph: if it is a file composed of triples, the graph in which the triples should be stored. By default, the default graph is used.
     /// :type to_graph: NamedNode or BlankNode or DefaultGraph or None, optional
     /// :rtype: None
-    /// :raises ValueError: if the MIME type is not supported or the `to_graph` parameter is given with a quad file.
+    /// :raises ValueError: if the MIME type is not supported.
     /// :raises SyntaxError: if the provided data is invalid.
     /// :raises IOError: if an I/O error happens during a quad insertion.
     ///
@@ -383,6 +383,11 @@ impl PyStore {
         to_graph: Option<&PyAny>,
         py: Python<'_>,
     ) -> PyResult<()> {
+        let Some(format) = RdfFormat::from_media_type(mime_type) else {
+            return Err(PyValueError::new_err(format!(
+                "Not supported MIME type: {mime_type}"
+            )));
+        };
         let to_graph_name = if let Some(graph_name) = to_graph {
             Some(GraphName::from(&PyGraphNameRef::try_from(graph_name)?))
         } else {
@@ -394,29 +399,13 @@ impl PyStore {
             PyReadable::from_data(input, py)
         };
         py.allow_threads(|| {
-            if let Some(graph_format) = GraphFormat::from_media_type(mime_type) {
+            if let Some(to_graph_name) = to_graph_name {
-                self.inner
-                    .load_graph(
-                        input,
-                        graph_format,
-                        to_graph_name.as_ref().unwrap_or(&GraphName::DefaultGraph),
-                        base_iri,
-                    )
-                    .map_err(map_loader_error)
-            } else if let Some(dataset_format) = DatasetFormat::from_media_type(mime_type) {
-                if to_graph_name.is_some() {
-                    return Err(PyValueError::new_err(
-                        "The target graph name parameter is not available for dataset formats",
-                    ));
-                }
                 self.inner
-                    .load_dataset(input, dataset_format, base_iri)
+                    .load_graph(input, format, to_graph_name, base_iri)
-                    .map_err(map_loader_error)
             } else {
-                Err(PyValueError::new_err(format!(
+                self.inner.load_dataset(input, format, base_iri)
-                    "Not supported MIME type: {mime_type}"
-                )))
             }
+            .map_err(map_loader_error)
         })
     }
 
@@ -448,7 +437,7 @@ impl PyStore {
     /// :param to_graph: if it is a file composed of triples, the graph in which the triples should be stored. By default, the default graph is used.
     /// :type to_graph: NamedNode or BlankNode or DefaultGraph or None, optional
     /// :rtype: None
-    /// :raises ValueError: if the MIME type is not supported or the `to_graph` parameter is given with a quad file.
+    /// :raises ValueError: if the MIME type is not supported.
     /// :raises SyntaxError: if the provided data is invalid.
     /// :raises IOError: if an I/O error happens during a quad insertion.
     ///
@@ -465,6 +454,11 @@ impl PyStore {
         to_graph: Option<&PyAny>,
         py: Python<'_>,
     ) -> PyResult<()> {
+        let Some(format) = RdfFormat::from_media_type(mime_type) else {
+            return Err(PyValueError::new_err(format!(
+                "Not supported MIME type: {mime_type}"
+            )));
+        };
         let to_graph_name = if let Some(graph_name) = to_graph {
             Some(GraphName::from(&PyGraphNameRef::try_from(graph_name)?))
         } else {
@@ -476,31 +470,16 @@ impl PyStore {
             PyReadable::from_data(input, py)
         };
         py.allow_threads(|| {
-            if let Some(graph_format) = GraphFormat::from_media_type(mime_type) {
+            if let Some(to_graph_name) = to_graph_name {
                 self.inner
                     .bulk_loader()
-                    .load_graph(
+                    .load_graph(input, format, to_graph_name, base_iri)
-                        input,
+            } else {
-                        graph_format,
-                        &to_graph_name.unwrap_or(GraphName::DefaultGraph),
-                        base_iri,
-                    )
-                    .map_err(map_loader_error)
-            } else if let Some(dataset_format) = DatasetFormat::from_media_type(mime_type) {
-                if to_graph_name.is_some() {
-                    return Err(PyValueError::new_err(
-                        "The target graph name parameter is not available for dataset formats",
-                    ));
-                }
                 self.inner
                     .bulk_loader()
-                    .load_dataset(input, dataset_format, base_iri)
+                    .load_dataset(input, format, base_iri)
-                    .map_err(map_loader_error)
-            } else {
-                Err(PyValueError::new_err(format!(
-                    "Not supported MIME type: {mime_type}"
-                )))
             }
+            .map_err(map_loader_error)
         })
     }
 
@@ -542,11 +521,6 @@ impl PyStore {
         from_graph: Option<&PyAny>,
         py: Python<'_>,
     ) -> PyResult<()> {
-        let output = if let Ok(path) = output.extract::<PathBuf>(py) {
-            PyWritable::from_file(&path, py).map_err(map_io_err)?
-        } else {
-            PyWritable::from_data(output)
-        };
         let Some(format) = RdfFormat::from_media_type(mime_type) else {
             return Err(PyValueError::new_err(format!(
                 "Not supported MIME type: {mime_type}"
@@ -557,6 +531,11 @@ impl PyStore {
         } else {
             None
         };
+        let output = if let Ok(path) = output.extract::<PathBuf>(py) {
+            PyWritable::from_file(&path, py).map_err(map_io_err)?
+        } else {
+            PyWritable::from_data(output)
+        };
         py.allow_threads(|| {
             if let Some(from_graph_name) = &from_graph_name {
                 self.inner.dump_graph(output, format, from_graph_name)
@@ -860,6 +839,7 @@ pub fn map_loader_error(error: LoaderError) -> PyErr {
     match error {
         LoaderError::Storage(error) => map_storage_error(error),
         LoaderError::Parsing(error) => map_parse_error(error),
+        LoaderError::InvalidBaseIri { .. } => PyValueError::new_err(error.to_string()),
     }
 }
 

python/tests/test_io.py

@@ -2,9 +2,9 @@ import unittest
 from io import BytesIO, StringIO, UnsupportedOperation
 from tempfile import NamedTemporaryFile, TemporaryFile
 
-from pyoxigraph import Literal, NamedNode, Quad, Triple, parse, serialize
+from pyoxigraph import Literal, NamedNode, Quad, parse, serialize
 
-EXAMPLE_TRIPLE = Triple(
+EXAMPLE_TRIPLE = Quad(
     NamedNode("http://example.com/foo"),
     NamedNode("http://example.com/p"),
     Literal("éù"),
@@ -83,11 +83,40 @@ class TestParse(unittest.TestCase):
             [EXAMPLE_QUAD],
         )
 
+    def test_parse_without_named_graphs(self) -> None:
+        with self.assertRaises(SyntaxError) as _:
+            list(
+                parse(
+                    StringIO('<g> { <foo> <p> "1" }'),
+                    "application/trig",
+                    base_iri="http://example.com/",
+                    without_named_graphs=True,
+                )
+            )
+
+    def test_parse_rename_blank_nodes(self) -> None:
+        self.assertNotEqual(
+            list(
+                parse(
+                    StringIO('_:s <http://example.com/p> "o" .'),
+                    "application/n-triples",
+                    rename_blank_nodes=True,
+                )
+            ),
+            list(
+                parse(
+                    StringIO('_:s <http://example.com/p> "o" .'),
+                    "application/n-triples",
+                    rename_blank_nodes=True,
+                )
+            ),
+        )
+
 
 class TestSerialize(unittest.TestCase):
     def test_serialize_to_bytes_io(self) -> None:
         output = BytesIO()
-        serialize([EXAMPLE_TRIPLE], output, "text/turtle")
+        serialize([EXAMPLE_TRIPLE.triple], output, "text/turtle")
         self.assertEqual(
             output.getvalue().decode(),
             '<http://example.com/foo> <http://example.com/p> "éù" .\n',

server/src/main.rs

@@ -1,10 +1,10 @@
 #![allow(clippy::print_stderr, clippy::cast_precision_loss, clippy::use_debug)]
-use anyhow::{anyhow, bail, ensure, Context, Error};
+use anyhow::{anyhow, bail, ensure, Context};
 use clap::{Parser, Subcommand};
 use flate2::read::MultiGzDecoder;
 use oxhttp::model::{Body, HeaderName, HeaderValue, Method, Request, Response, Status};
 use oxhttp::Server;
-use oxigraph::io::{DatasetFormat, GraphFormat, RdfFormat, RdfSerializer};
+use oxigraph::io::{RdfFormat, RdfSerializer};
 use oxigraph::model::{
     GraphName, GraphNameRef, IriParseError, NamedNode, NamedNodeRef, NamedOrBlankNode,
 };
@@ -295,13 +295,13 @@ pub fn main() -> anyhow::Result<()> {
                 Store::new()
             }?;
             let format = if let Some(format) = format {
-                Some(GraphOrDatasetFormat::from_str(&format)?)
+                Some(rdf_format_from_name(&format)?)
             } else {
                 None
             };
             let graph = if let Some(iri) = &graph {
                 Some(
-                    NamedNodeRef::new(iri)
+                    NamedNode::new(iri)
                         .with_context(|| format!("The target graph name {iri} is invalid"))?,
                 )
             } else {
@@ -342,6 +342,7 @@ pub fn main() -> anyhow::Result<()> {
                     .scope(|s| {
                         for file in file {
                             let store = store.clone();
+                            let graph = graph.clone();
                             s.spawn(move |_| {
                                 let f = file.clone();
                                 let start = Instant::now();
@@ -379,10 +380,8 @@ pub fn main() -> anyhow::Result<()> {
                                             &loader,
                                             MultiGzDecoder::new(fp),
                                             format.unwrap_or_else(|| {
-                                                GraphOrDatasetFormat::from_path(
+                                                rdf_format_from_path(&file.with_extension(""))
-                                                    &file.with_extension(""),
+                                                    .unwrap()
-                                                )
-                                                .unwrap()
                                             }),
                                             None,
                                             graph,
@@ -392,7 +391,7 @@ pub fn main() -> anyhow::Result<()> {
                                             &loader,
                                             fp,
                                             format.unwrap_or_else(|| {
-                                                GraphOrDatasetFormat::from_path(&file).unwrap()
+                                                rdf_format_from_path(&file).unwrap()
                                             }),
                                             None,
                                             graph,
@@ -432,7 +431,7 @@ pub fn main() -> anyhow::Result<()> {
             };
             let graph = if let Some(graph) = &graph {
                 Some(if graph.eq_ignore_ascii_case("default") {
-                    GraphName::DefaultGraph
+                    GraphNameRef::DefaultGraph
                 } else {
                     NamedNodeRef::new(graph)
                         .with_context(|| format!("The target graph name {graph} is invalid"))?
@@ -637,24 +636,15 @@ pub fn main() -> anyhow::Result<()> {
 fn bulk_load(
     loader: &BulkLoader,
     reader: impl Read,
-    format: GraphOrDatasetFormat,
+    format: RdfFormat,
     base_iri: Option<&str>,
-    to_graph_name: Option<NamedNodeRef<'_>>,
+    to_graph_name: Option<NamedNode>,
 ) -> anyhow::Result<()> {
-    match format {
+    if let Some(to_graph_name) = to_graph_name {
-        GraphOrDatasetFormat::Graph(format) => loader.load_graph(
+        loader.load_graph(reader, format, to_graph_name, base_iri)
-            reader,
+    } else {
-            format,
+        loader.load_dataset(reader, format, base_iri)
-            to_graph_name.map_or(GraphNameRef::DefaultGraph, GraphNameRef::from),
+    }?;
-            base_iri,
-        )?,
-        GraphOrDatasetFormat::Dataset(format) => {
-            if to_graph_name.is_some() {
-                bail!("The --graph option is not allowed when loading a dataset format like NQuads or TriG");
-            }
-            loader.load_dataset(reader, format, base_iri)?
-        }
-    }
     Ok(())
 }
 
@@ -662,57 +652,17 @@ fn dump(
     store: &Store,
     writer: impl Write,
     format: RdfFormat,
-    to_graph_name: Option<GraphName>,
+    from_graph_name: Option<GraphNameRef<'_>>,
 ) -> anyhow::Result<()> {
-    ensure!(format.supports_datasets() || to_graph_name.is_some(), "The --graph option is required when writing a format not supporting datasets like NTriples, Turtle or RDF/XML");
+    ensure!(format.supports_datasets() || from_graph_name.is_some(), "The --graph option is required when writing a format not supporting datasets like NTriples, Turtle or RDF/XML");
-    if let Some(to_graph_name) = &to_graph_name {
+    if let Some(from_graph_name) = from_graph_name {
-        store.dump_graph(writer, format, to_graph_name)
+        store.dump_graph(writer, format, from_graph_name)
     } else {
         store.dump_dataset(writer, format)
     }?;
     Ok(())
 }
 
-#[derive(Copy, Clone)]
-enum GraphOrDatasetFormat {
-    Graph(GraphFormat),
-    Dataset(DatasetFormat),
-}
-
-impl GraphOrDatasetFormat {
-    fn from_path(path: &Path) -> anyhow::Result<Self> {
-        format_from_path(path, Self::from_extension)
-    }
-
-    fn from_extension(name: &str) -> anyhow::Result<Self> {
-        Ok(match (GraphFormat::from_extension(name), DatasetFormat::from_extension(name)) {
-            (Some(g), Some(d)) => bail!("The file extension '{name}' can be resolved to both '{}' and '{}', not sure what to pick", g.file_extension(), d.file_extension()),
-            (Some(g), None) => Self::Graph(g),
-            (None, Some(d)) => Self::Dataset(d),
-            (None, None) =>
-            bail!("The file extension '{name}' is unknown")
-        })
-    }
-
-    fn from_media_type(name: &str) -> anyhow::Result<Self> {
-        Ok(
-            match (
-                GraphFormat::from_media_type(name),
-                DatasetFormat::from_media_type(name),
-            ) {
-                (Some(g), Some(d)) => bail!(
-                "The media type '{name}' can be resolved to both '{}' and '{}', not sure what to pick",
-                g.file_extension(),
-                d.file_extension()
-            ),
-                (Some(g), None) => Self::Graph(g),
-                (None, Some(d)) => Self::Dataset(d),
-                (None, None) => bail!("The media type '{name}' is unknown"),
-            },
-        )
-    }
-}
-
 fn format_from_path<T>(
     path: &Path,
     from_extension: impl FnOnce(&str) -> anyhow::Result<T>,
@@ -731,20 +681,6 @@ fn format_from_path<T>(
     }
 }
 
-impl FromStr for GraphOrDatasetFormat {
-    type Err = Error;
-
-    fn from_str(name: &str) -> anyhow::Result<Self> {
-        if let Ok(t) = Self::from_extension(name) {
-            return Ok(t);
-        }
-        if let Ok(t) = Self::from_media_type(name) {
-            return Ok(t);
-        }
-        bail!("The file format '{name}' is unknown")
-    }
-}
-
 fn rdf_format_from_path(path: &Path) -> anyhow::Result<RdfFormat> {
     format_from_path(path, |ext| {
         RdfFormat::from_extension(ext)
@@ -978,7 +914,7 @@ fn handle_request(
             let content_type =
                 content_type(request).ok_or_else(|| bad_request("No Content-Type given"))?;
             if let Some(target) = store_target(request)? {
-                let format = GraphFormat::from_media_type(&content_type)
+                let format = RdfFormat::from_media_type(&content_type)
                     .ok_or_else(|| unsupported_media_type(&content_type))?;
                 let new = !match &target {
                     NamedGraphName::NamedNode(target) => {
@@ -1002,7 +938,7 @@ fn handle_request(
                         true
                     }
                 };
-                web_load_graph(&store, request, format, GraphName::from(target).as_ref())?;
+                web_load_graph(&store, request, format, &GraphName::from(target))?;
                 Ok(Response::builder(if new {
                     Status::CREATED
                 } else {
@@ -1010,7 +946,7 @@ fn handle_request(
                 })
                 .build())
             } else {
-                let format = DatasetFormat::from_media_type(&content_type)
+                let format = RdfFormat::from_media_type(&content_type)
                     .ok_or_else(|| unsupported_media_type(&content_type))?;
                 store.clear().map_err(internal_server_error)?;
                 web_load_dataset(&store, request, format)?;
@@ -1054,10 +990,10 @@ fn handle_request(
             let content_type =
                 content_type(request).ok_or_else(|| bad_request("No Content-Type given"))?;
             if let Some(target) = store_target(request)? {
-                let format = GraphFormat::from_media_type(&content_type)
+                let format = RdfFormat::from_media_type(&content_type)
                     .ok_or_else(|| unsupported_media_type(&content_type))?;
                 let new = assert_that_graph_exists(&store, &target).is_ok();
-                web_load_graph(&store, request, format, GraphName::from(target).as_ref())?;
+                web_load_graph(&store, request, format, &GraphName::from(target))?;
                 Ok(Response::builder(if new {
                     Status::CREATED
                 } else {
@@ -1065,22 +1001,19 @@ fn handle_request(
                 })
                 .build())
             } else {
-                match GraphOrDatasetFormat::from_media_type(&content_type)
+                let format = RdfFormat::from_media_type(&content_type)
-                    .map_err(|_| unsupported_media_type(&content_type))?
+                    .ok_or_else(|| unsupported_media_type(&content_type))?;
-                {
+                if format.supports_datasets() {
-                    GraphOrDatasetFormat::Graph(format) => {
+                    web_load_dataset(&store, request, format)?;
-                        let graph =
+                    Ok(Response::builder(Status::NO_CONTENT).build())
-                            resolve_with_base(request, &format!("/store/{:x}", random::<u128>()))?;
+                } else {
-                        web_load_graph(&store, request, format, graph.as_ref().into())?;
+                    let graph =
-                        Ok(Response::builder(Status::CREATED)
+                        resolve_with_base(request, &format!("/store/{:x}", random::<u128>()))?;
-                            .with_header(HeaderName::LOCATION, graph.into_string())
+                    web_load_graph(&store, request, format, &graph.clone().into())?;
-                            .unwrap()
+                    Ok(Response::builder(Status::CREATED)
-                            .build())
+                        .with_header(HeaderName::LOCATION, graph.as_str())
-                    }
+                        .unwrap()
-                    GraphOrDatasetFormat::Dataset(format) => {
+                        .build())
-                        web_load_dataset(&store, request, format)?;
-                        Ok(Response::builder(Status::NO_CONTENT).build())
-                    }
                 }
             }
         }
@@ -1531,10 +1464,10 @@ fn content_type(request: &Request) -> Option<String> {
 fn web_load_graph(
     store: &Store,
     request: &mut Request,
-    format: GraphFormat,
+    format: RdfFormat,
-    to_graph_name: GraphNameRef<'_>,
+    to_graph_name: &GraphName,
 ) -> Result<(), HttpError> {
-    let base_iri = if let GraphNameRef::NamedNode(graph_name) = to_graph_name {
+    let base_iri = if let GraphName::NamedNode(graph_name) = to_graph_name {
         Some(graph_name.as_str())
     } else {
         None
@@ -1543,11 +1476,11 @@ fn web_load_graph(
         web_bulk_loader(store, request).load_graph(
             request.body_mut(),
             format,
-            to_graph_name,
+            to_graph_name.clone(),
             base_iri,
         )
     } else {
-        store.load_graph(request.body_mut(), format, to_graph_name, base_iri)
+        store.load_graph(request.body_mut(), format, to_graph_name.clone(), base_iri)
     }
     .map_err(loader_to_http_error)
 }
@@ -1555,7 +1488,7 @@ fn web_load_graph(
 fn web_load_dataset(
     store: &Store,
     request: &mut Request,
-    format: DatasetFormat,
+    format: RdfFormat,
 ) -> Result<(), HttpError> {
     if url_query_parameter(request, "no_transaction").is_some() {
         web_bulk_loader(store, request).load_dataset(request.body_mut(), format, None)
@@ -1616,6 +1549,7 @@ fn loader_to_http_error(e: LoaderError) -> HttpError {
     match e {
         LoaderError::Parsing(e) => bad_request(e),
         LoaderError::Storage(e) => internal_server_error(e),
+        LoaderError::InvalidBaseIri { .. } => bad_request(e),
     }
 }
 

testsuite/src/files.rs

@@ -1,5 +1,5 @@
 use anyhow::{anyhow, bail, Context, Result};
-use oxigraph::io::{DatasetFormat, DatasetParser, GraphFormat, GraphParser};
+use oxigraph::io::{RdfFormat, RdfParser};
 use oxigraph::model::{Dataset, Graph};
 use oxttl::n3::N3Quad;
 use oxttl::N3Parser;
@@ -33,14 +33,14 @@ pub fn read_file_to_string(url: &str) -> Result<String> {
 pub fn load_to_graph(
     url: &str,
     graph: &mut Graph,
-    format: GraphFormat,
+    format: RdfFormat,
     ignore_errors: bool,
 ) -> Result<()> {
-    let parser = GraphParser::from_format(format).with_base_iri(url)?;
+    let parser = RdfParser::from_format(format).with_base_iri(url)?;
-    for t in parser.read_triples(read_file(url)?) {
+    for t in parser.parse_read(read_file(url)?) {
         match t {
             Ok(t) => {
-                graph.insert(&t);
+                graph.insert(&t.into());
             }
             Err(e) => {
                 if !ignore_errors {
@@ -52,26 +52,20 @@ pub fn load_to_graph(
     Ok(())
 }
 
-pub fn load_graph(url: &str, format: GraphFormat, ignore_errors: bool) -> Result<Graph> {
+pub fn load_graph(url: &str, format: RdfFormat, ignore_errors: bool) -> Result<Graph> {
     let mut graph = Graph::new();
     load_to_graph(url, &mut graph, format, ignore_errors)?;
     Ok(graph)
 }
 
-pub fn guess_graph_format(url: &str) -> Result<GraphFormat> {
-    url.rsplit_once('.')
-        .and_then(|(_, extension)| GraphFormat::from_extension(extension))
-        .ok_or_else(|| anyhow!("Serialization type not found for {url}"))
-}
-
 pub fn load_to_dataset(
     url: &str,
     dataset: &mut Dataset,
-    format: DatasetFormat,
+    format: RdfFormat,
     ignore_errors: bool,
 ) -> Result<()> {
-    let parser = DatasetParser::from_format(format).with_base_iri(url)?;
+    let parser = RdfParser::from_format(format).with_base_iri(url)?;
-    for q in parser.read_quads(read_file(url)?) {
+    for q in parser.parse_read(read_file(url)?) {
         match q {
             Ok(q) => {
                 dataset.insert(&q);
@@ -86,15 +80,15 @@ pub fn load_to_dataset(
     Ok(())
 }
 
-pub fn load_dataset(url: &str, format: DatasetFormat, ignore_errors: bool) -> Result<Dataset> {
+pub fn load_dataset(url: &str, format: RdfFormat, ignore_errors: bool) -> Result<Dataset> {
     let mut dataset = Dataset::new();
     load_to_dataset(url, &mut dataset, format, ignore_errors)?;
     Ok(dataset)
 }
 
-pub fn guess_dataset_format(url: &str) -> Result<DatasetFormat> {
+pub fn guess_rdf_format(url: &str) -> Result<RdfFormat> {
     url.rsplit_once('.')
-        .and_then(|(_, extension)| DatasetFormat::from_extension(extension))
+        .and_then(|(_, extension)| RdfFormat::from_extension(extension))
         .ok_or_else(|| anyhow!("Serialization type not found for {url}"))
 }
 

testsuite/src/manifest.rs

@@ -1,4 +1,4 @@
-use crate::files::{guess_graph_format, load_to_graph};
+use crate::files::{guess_rdf_format, load_to_graph};
 use crate::vocab::*;
 use anyhow::{bail, Result};
 use oxigraph::model::vocab::*;
@@ -275,7 +275,7 @@ impl TestManifest {
             return Ok(None);
         };
         self.graph.clear();
-        load_to_graph(&url, &mut self.graph, guess_graph_format(&url)?, false)?;
+        load_to_graph(&url, &mut self.graph, guess_rdf_format(&url)?, false)?;
 
         let manifests = self
             .graph

testsuite/src/parser_evaluator.rs

@@ -1,27 +1,27 @@
 use crate::evaluator::TestEvaluator;
-use crate::files::{guess_dataset_format, guess_graph_format, load_dataset, load_graph, load_n3};
+use crate::files::{guess_rdf_format, load_dataset, load_n3};
 use crate::manifest::Test;
-use crate::report::{dataset_diff, graph_diff};
+use crate::report::dataset_diff;
 use anyhow::{anyhow, bail, Result};
-use oxigraph::io::{DatasetFormat, GraphFormat};
+use oxigraph::io::RdfFormat;
 use oxigraph::model::{BlankNode, Dataset, Quad};
 use oxttl::n3::{N3Quad, N3Term};
 
 pub fn register_parser_tests(evaluator: &mut TestEvaluator) {
     evaluator.register(
         "http://www.w3.org/ns/rdftest#TestNTriplesPositiveSyntax",
-        |t| evaluate_positive_graph_syntax_test(t, GraphFormat::NTriples),
+        |t| evaluate_positive_syntax_test(t, RdfFormat::NTriples),
     );
     evaluator.register(
         "http://www.w3.org/ns/rdftest#TestNQuadsPositiveSyntax",
-        |t| evaluate_positive_dataset_syntax_test(t, DatasetFormat::NQuads),
+        |t| evaluate_positive_syntax_test(t, RdfFormat::NQuads),
     );
     evaluator.register(
         "http://www.w3.org/ns/rdftest#TestTurtlePositiveSyntax",
-        |t| evaluate_positive_graph_syntax_test(t, GraphFormat::Turtle),
+        |t| evaluate_positive_syntax_test(t, RdfFormat::Turtle),
     );
     evaluator.register("http://www.w3.org/ns/rdftest#TestTrigPositiveSyntax", |t| {
-        evaluate_positive_dataset_syntax_test(t, DatasetFormat::TriG)
+        evaluate_positive_syntax_test(t, RdfFormat::TriG)
     });
     evaluator.register(
         "https://w3c.github.io/N3/tests/test.n3#TestN3PositiveSyntax",
@@ -29,47 +29,47 @@ pub fn register_parser_tests(evaluator: &mut TestEvaluator) {
     );
     evaluator.register(
         "http://www.w3.org/ns/rdftest#TestNTriplesNegativeSyntax",
-        |t| evaluate_negative_graph_syntax_test(t, GraphFormat::NTriples),
+        |t| evaluate_negative_syntax_test(t, RdfFormat::NTriples),
     );
     evaluator.register(
         "http://www.w3.org/ns/rdftest#TestNQuadsNegativeSyntax",
-        |t| evaluate_negative_dataset_syntax_test(t, DatasetFormat::NQuads),
+        |t| evaluate_negative_syntax_test(t, RdfFormat::NQuads),
     );
     evaluator.register(
         "http://www.w3.org/ns/rdftest#TestTurtleNegativeSyntax",
-        |t| evaluate_negative_graph_syntax_test(t, GraphFormat::Turtle),
+        |t| evaluate_negative_syntax_test(t, RdfFormat::Turtle),
     );
     evaluator.register("http://www.w3.org/ns/rdftest#TestTrigNegativeSyntax", |t| {
-        evaluate_negative_dataset_syntax_test(t, DatasetFormat::TriG)
+        evaluate_negative_syntax_test(t, RdfFormat::TriG)
     });
     evaluator.register("http://www.w3.org/ns/rdftest#TestXMLNegativeSyntax", |t| {
-        evaluate_negative_graph_syntax_test(t, GraphFormat::RdfXml)
+        evaluate_negative_syntax_test(t, RdfFormat::RdfXml)
     });
     evaluator.register(
         "https://w3c.github.io/N3/tests/test.n3#TestN3NegativeSyntax",
         evaluate_negative_n3_syntax_test,
     );
     evaluator.register("http://www.w3.org/ns/rdftest#TestTurtleEval", |t| {
-        evaluate_graph_eval_test(t, GraphFormat::Turtle, false)
+        evaluate_eval_test(t, RdfFormat::Turtle, false)
     });
     evaluator.register("http://www.w3.org/ns/rdftest#TestTrigEval", |t| {
-        evaluate_dataset_eval_test(t, DatasetFormat::TriG, false)
+        evaluate_eval_test(t, RdfFormat::TriG, false)
     });
     evaluator.register("http://www.w3.org/ns/rdftest#TestXMLEval", |t| {
-        evaluate_graph_eval_test(t, GraphFormat::RdfXml, false)
+        evaluate_eval_test(t, RdfFormat::RdfXml, false)
     });
     evaluator.register("https://w3c.github.io/N3/tests/test.n3#TestN3Eval", |t| {
         evaluate_n3_eval_test(t, false)
     });
     evaluator.register("http://www.w3.org/ns/rdftest#TestTurtleNegativeEval", |t| {
-        evaluate_negative_graph_syntax_test(t, GraphFormat::Turtle)
+        evaluate_negative_syntax_test(t, RdfFormat::Turtle)
     });
     evaluator.register("http://www.w3.org/ns/rdftest#TestTrigNegativeEval", |t| {
-        evaluate_negative_dataset_syntax_test(t, DatasetFormat::TriG)
+        evaluate_negative_syntax_test(t, RdfFormat::TriG)
     });
     evaluator.register(
         "https://w3c.github.io/rdf-canon/tests/vocab#RDFC10EvalTest",
-        |t| evaluate_positive_dataset_syntax_test(t, DatasetFormat::NQuads), //TODO: not a proper implementation!
+        |t| evaluate_positive_syntax_test(t, RdfFormat::NQuads), //TODO: not a proper implementation!
     );
     evaluator.register(
         "https://w3c.github.io/rdf-canon/tests/vocab#RDFC10NegativeEvalTest",
@@ -81,11 +81,11 @@ pub fn register_parser_tests(evaluator: &mut TestEvaluator) {
     );
     evaluator.register(
         "https://github.com/oxigraph/oxigraph/tests#TestNTripleRecovery",
-        |t| evaluate_graph_eval_test(t, GraphFormat::NTriples, true),
+        |t| evaluate_eval_test(t, RdfFormat::NTriples, true),
     );
     evaluator.register(
         "https://github.com/oxigraph/oxigraph/tests#TestTurtleRecovery",
-        |t| evaluate_graph_eval_test(t, GraphFormat::Turtle, true),
+        |t| evaluate_eval_test(t, RdfFormat::Turtle, true),
     );
     evaluator.register(
         "https://github.com/oxigraph/oxigraph/tests#TestN3Recovery",
@@ -93,16 +93,7 @@ pub fn register_parser_tests(evaluator: &mut TestEvaluator) {
     );
 }
 
-fn evaluate_positive_graph_syntax_test(test: &Test, format: GraphFormat) -> Result<()> {
+fn evaluate_positive_syntax_test(test: &Test, format: RdfFormat) -> Result<()> {
-    let action = test
-        .action
-        .as_deref()
-        .ok_or_else(|| anyhow!("No action found for test {test}"))?;
-    load_graph(action, format, false).map_err(|e| anyhow!("Parse error: {e}"))?;
-    Ok(())
-}
-
-fn evaluate_positive_dataset_syntax_test(test: &Test, format: DatasetFormat) -> Result<()> {
     let action = test
         .action
         .as_deref()
@@ -120,18 +111,7 @@ fn evaluate_positive_n3_syntax_test(test: &Test) -> Result<()> {
     Ok(())
 }
 
-fn evaluate_negative_graph_syntax_test(test: &Test, format: GraphFormat) -> Result<()> {
+fn evaluate_negative_syntax_test(test: &Test, format: RdfFormat) -> Result<()> {
-    let action = test
-        .action
-        .as_deref()
-        .ok_or_else(|| anyhow!("No action found for test {test}"))?;
-    match load_graph(action, format, false) {
-        Ok(_) => bail!("File parsed without errors even if it should not"),
-        Err(_) => Ok(()),
-    }
-}
-
-fn evaluate_negative_dataset_syntax_test(test: &Test, format: DatasetFormat) -> Result<()> {
     let action = test
         .action
         .as_deref()
@@ -153,36 +133,7 @@ fn evaluate_negative_n3_syntax_test(test: &Test) -> Result<()> {
     }
 }
 
-fn evaluate_graph_eval_test(test: &Test, format: GraphFormat, ignore_errors: bool) -> Result<()> {
+fn evaluate_eval_test(test: &Test, format: RdfFormat, ignore_errors: bool) -> Result<()> {
-    let action = test
-        .action
-        .as_deref()
-        .ok_or_else(|| anyhow!("No action found for test {test}"))?;
-    let mut actual_graph = load_graph(action, format, ignore_errors)
-        .map_err(|e| anyhow!("Parse error on file {action}: {e}"))?;
-    actual_graph.canonicalize();
-    let results = test
-        .result
-        .as_ref()
-        .ok_or_else(|| anyhow!("No tests result found"))?;
-    let mut expected_graph = load_graph(results, guess_graph_format(results)?, false)
-        .map_err(|e| anyhow!("Parse error on file {results}: {e}"))?;
-    expected_graph.canonicalize();
-    if expected_graph == actual_graph {
-        Ok(())
-    } else {
-        bail!(
-            "The two files are not isomorphic. Diff:\n{}",
-            graph_diff(&expected_graph, &actual_graph)
-        )
-    }
-}
-
-fn evaluate_dataset_eval_test(
-    test: &Test,
-    format: DatasetFormat,
-    ignore_errors: bool,
-) -> Result<()> {
     let action = test
         .action
         .as_deref()
@@ -194,7 +145,7 @@ fn evaluate_dataset_eval_test(
         .result
         .as_ref()
         .ok_or_else(|| anyhow!("No tests result found"))?;
-    let mut expected_dataset = load_dataset(results, guess_dataset_format(results)?, false)
+    let mut expected_dataset = load_dataset(results, guess_rdf_format(results)?, false)
         .map_err(|e| anyhow!("Parse error on file {results}: {e}"))?;
     expected_dataset.canonicalize();
     if expected_dataset == actual_dataset {

testsuite/src/report.rs

@@ -1,5 +1,5 @@
 use anyhow::Result;
-use oxigraph::model::{Dataset, Graph, NamedNode};
+use oxigraph::model::{Dataset, NamedNode};
 use std::fmt::Write;
 use text_diff::{diff, Difference};
 use time::format_description::well_known::Rfc3339;
@@ -26,20 +26,6 @@ fn normalize_dataset_text(store: &Dataset) -> String {
     quads.join("\n")
 }
 
-pub(super) fn graph_diff(expected: &Graph, actual: &Graph) -> String {
-    format_diff(
-        &normalize_graph_text(expected),
-        &normalize_graph_text(actual),
-        "triples",
-    )
-}
-
-fn normalize_graph_text(store: &Graph) -> String {
-    let mut triples: Vec<_> = store.iter().map(|q| q.to_string()).collect();
-    triples.sort();
-    triples.join("\n")
-}
-
 pub(super) fn format_diff(expected: &str, actual: &str, kind: &str) -> String {
     let (_, changeset) = diff(expected, actual, "\n");
     let mut ret = String::new();

testsuite/src/sparql_evaluator.rs

@@ -158,7 +158,7 @@ fn evaluate_evaluation_test(test: &Test) -> Result<()> {
         load_dataset_to_store(data, &store)?;
     }
     for (name, value) in &test.graph_data {
-        load_graph_to_store(value, &store, name)?;
+        load_graph_to_store(value, &store, name.clone())?;
     }
     let query_file = test
         .query
@@ -251,7 +251,7 @@ fn evaluate_update_evaluation_test(test: &Test) -> Result<()> {
         load_dataset_to_store(data, &store)?;
     }
     for (name, value) in &test.graph_data {
-        load_graph_to_store(value, &store, name)?;
+        load_graph_to_store(value, &store, name.clone())?;
     }
 
     let result_store = Store::new()?;
@@ -259,7 +259,7 @@ fn evaluate_update_evaluation_test(test: &Test) -> Result<()> {
         load_dataset_to_store(data, &result_store)?;
     }
     for (name, value) in &test.result_graph_data {
-        load_graph_to_store(value, &result_store, name)?;
+        load_graph_to_store(value, &result_store, name.clone())?;
     }
 
     let update_file = test
@@ -301,7 +301,7 @@ fn load_sparql_query_result(url: &str) -> Result<StaticQueryResults> {
             false,
         )
     } else {
-        StaticQueryResults::from_graph(&load_graph(url, guess_graph_format(url)?, false)?)
+        StaticQueryResults::from_graph(&load_graph(url, guess_rdf_format(url)?, false)?)
     }
 }
 
@@ -698,14 +698,14 @@ fn solutions_to_string(solutions: Vec<Vec<(Variable, Term)>>, ordered: bool) ->
     lines.join("\n")
 }
 
-fn load_graph_to_store<'a>(
+fn load_graph_to_store(
     url: &str,
     store: &Store,
-    to_graph_name: impl Into<GraphNameRef<'a>>,
+    to_graph_name: impl Into<GraphName>,
 ) -> Result<()> {
     store.load_graph(
         read_file(url)?,
-        guess_graph_format(url)?,
+        guess_rdf_format(url)?,
         to_graph_name,
         Some(url),
     )?;
@@ -713,16 +713,7 @@ fn load_graph_to_store<'a>(
 }
 
 fn load_dataset_to_store(url: &str, store: &Store) -> Result<()> {
-    if let Ok(format) = guess_dataset_format(url) {
+    store.load_dataset(read_file(url)?, guess_rdf_format(url)?, Some(url))?;
-        store.load_dataset(read_file(url)?, format, Some(url))
-    } else {
-        store.load_graph(
-            read_file(url)?,
-            guess_graph_format(url)?,
-            GraphNameRef::DefaultGraph,
-            Some(url),
-        )
-    }?;
     Ok(())
 }