Tpt
3 years ago
parent
122db6a2c3
commit
3726d2cbfc
@ -0,0 +1,5 @@ |
|||||||
|
Disk-based RDF Store |
||||||
|
==================== |
||||||
|
|
||||||
|
.. autoclass:: pyoxigraph.Store |
||||||
|
:members: |
||||||
@ -1,5 +0,0 @@ |
|||||||
In-Memory Store |
|
||||||
=============== |
|
||||||
|
|
||||||
.. autoclass:: pyoxigraph.MemoryStore |
|
||||||
:members: |
|
||||||
@ -1,5 +0,0 @@ |
|||||||
Disk-based Store |
|
||||||
================ |
|
||||||
|
|
||||||
.. autoclass:: pyoxigraph.SledStore |
|
||||||
:members: |
|
||||||
@ -1,470 +0,0 @@ |
|||||||
use crate::io::PyFileLike; |
|
||||||
use crate::model::*; |
|
||||||
use crate::sparql::*; |
|
||||||
use crate::store_utils::*; |
|
||||||
use oxigraph::io::{DatasetFormat, GraphFormat}; |
|
||||||
use oxigraph::model::GraphNameRef; |
|
||||||
use oxigraph::store::memory::*; |
|
||||||
use pyo3::basic::CompareOp; |
|
||||||
use pyo3::exceptions::{PyNotImplementedError, PyValueError}; |
|
||||||
use pyo3::prelude::{ |
|
||||||
pyclass, pymethods, pyproto, Py, PyAny, PyCell, PyObject, PyRef, PyRefMut, PyResult, Python, |
|
||||||
}; |
|
||||||
use pyo3::{PyIterProtocol, PyObjectProtocol, PySequenceProtocol}; |
|
||||||
use std::convert::TryFrom; |
|
||||||
use std::io::BufReader; |
|
||||||
|
|
||||||
/// In-memory store.
|
|
||||||
/// It encodes a `RDF dataset <https://www.w3.org/TR/rdf11-concepts/#dfn-rdf-dataset>`_ and allows to query it using SPARQL.
|
|
||||||
///
|
|
||||||
/// The :py:func:`str` function provides a serialization of the store in NQuads:
|
|
||||||
///
|
|
||||||
/// >>> store = MemoryStore()
|
|
||||||
/// >>> store.add(Quad(NamedNode('http://example.com'), NamedNode('http://example.com/p'), Literal('1'), NamedNode('http://example.com/g')))
|
|
||||||
/// >>> str(store)
|
|
||||||
/// '<http://example.com> <http://example.com/p> "1" <http://example.com/g> .\n'
|
|
||||||
#[pyclass(name = "MemoryStore", module = "oxigraph")] |
|
||||||
#[derive(Eq, PartialEq, Clone)] |
|
||||||
#[text_signature = "()"] |
|
||||||
pub struct PyMemoryStore { |
|
||||||
inner: MemoryStore, |
|
||||||
} |
|
||||||
|
|
||||||
#[pymethods] |
|
||||||
impl PyMemoryStore { |
|
||||||
#[new] |
|
||||||
fn new() -> Self { |
|
||||||
Self { |
|
||||||
inner: MemoryStore::new(), |
|
||||||
} |
|
||||||
} |
|
||||||
|
|
||||||
/// Adds a quad to the store
|
|
||||||
///
|
|
||||||
/// :param quad: the quad to add
|
|
||||||
/// :type quad: Quad
|
|
||||||
///
|
|
||||||
/// >>> store = MemoryStore()
|
|
||||||
/// >>> store.add(Quad(NamedNode('http://example.com'), NamedNode('http://example.com/p'), Literal('1'), NamedNode('http://example.com/g')))
|
|
||||||
/// >>> list(store)
|
|
||||||
/// [<Quad subject=<NamedNode value=http://example.com> predicate=<NamedNode value=http://example.com/p> object=<Literal value=1 datatype=<NamedNode value=http://www.w3.org/2001/XMLSchema#string>> graph_name=<NamedNode value=http://example.com/g>>]
|
|
||||||
#[text_signature = "($self, quad)"] |
|
||||||
fn add(&self, quad: PyQuad) { |
|
||||||
self.inner.insert(quad) |
|
||||||
} |
|
||||||
|
|
||||||
/// Removes a quad from the store
|
|
||||||
///
|
|
||||||
/// :param quad: the quad to remove
|
|
||||||
/// :type quad: Quad
|
|
||||||
///
|
|
||||||
/// >>> store = MemoryStore()
|
|
||||||
/// >>> quad = Quad(NamedNode('http://example.com'), NamedNode('http://example.com/p'), Literal('1'), NamedNode('http://example.com/g'))
|
|
||||||
/// >>> store.add(quad)
|
|
||||||
/// >>> store.remove(quad)
|
|
||||||
/// >>> list(store)
|
|
||||||
/// []
|
|
||||||
#[text_signature = "($self, quad)"] |
|
||||||
fn remove(&self, quad: &PyQuad) { |
|
||||||
self.inner.remove(quad) |
|
||||||
} |
|
||||||
|
|
||||||
/// Looks for the quads matching a given pattern
|
|
||||||
///
|
|
||||||
/// :param subject: the quad subject or :py:const:`None` to match everything.
|
|
||||||
/// :type subject: NamedNode or BlankNode or None
|
|
||||||
/// :param predicate: the quad predicate or :py:const:`None` to match everything.
|
|
||||||
/// :type predicate: NamedNode or None
|
|
||||||
/// :param object: the quad object or :py:const:`None` to match everything.
|
|
||||||
/// :type object: NamedNode or BlankNode or Literal or None
|
|
||||||
/// :param graph: the quad graph name. To match only the default graph, use :py:class:`DefaultGraph`. To match everything use :py:const:`None`.
|
|
||||||
/// :type graph: NamedNode or BlankNode or DefaultGraph or None
|
|
||||||
/// :return: an iterator of the quads matching the pattern
|
|
||||||
/// :rtype: iter(Quad)
|
|
||||||
///
|
|
||||||
/// >>> store = MemoryStore()
|
|
||||||
/// >>> store.add(Quad(NamedNode('http://example.com'), NamedNode('http://example.com/p'), Literal('1'), NamedNode('http://example.com/g')))
|
|
||||||
/// >>> list(store.quads_for_pattern(NamedNode('http://example.com'), None, None, None))
|
|
||||||
/// [<Quad subject=<NamedNode value=http://example.com> predicate=<NamedNode value=http://example.com/p> object=<Literal value=1 datatype=<NamedNode value=http://www.w3.org/2001/XMLSchema#string>> graph_name=<NamedNode value=http://example.com/g>>]
|
|
||||||
#[text_signature = "($self, subject, predicate, object, graph_name = None)"] |
|
||||||
fn quads_for_pattern( |
|
||||||
&self, |
|
||||||
subject: &PyAny, |
|
||||||
predicate: &PyAny, |
|
||||||
object: &PyAny, |
|
||||||
graph_name: Option<&PyAny>, |
|
||||||
) -> PyResult<QuadIter> { |
|
||||||
let (subject, predicate, object, graph_name) = |
|
||||||
extract_quads_pattern(subject, predicate, object, graph_name)?; |
|
||||||
Ok(QuadIter { |
|
||||||
inner: self.inner.quads_for_pattern( |
|
||||||
subject.as_ref().map(|p| p.into()), |
|
||||||
predicate.as_ref().map(|p| p.into()), |
|
||||||
object.as_ref().map(|p| p.into()), |
|
||||||
graph_name.as_ref().map(|p| p.into()), |
|
||||||
), |
|
||||||
}) |
|
||||||
} |
|
||||||
|
|
||||||
/// Executes a `SPARQL 1.1 query <https://www.w3.org/TR/sparql11-query/>`_.
|
|
||||||
///
|
|
||||||
/// :param query: the query to execute
|
|
||||||
/// :type query: str
|
|
||||||
/// :param use_default_graph_as_union: if the SPARQL query should look for triples in all the dataset graphs by default (i.e. without `GRAPH` operations). Disabled by default.
|
|
||||||
/// :type use_default_graph_as_union: bool, optional
|
|
||||||
/// :param default_graph: list of the graphs that should be used as the query default graph. By default, the store default graph is used.
|
|
||||||
/// :type default_graph: NamedNode or BlankNode or DefaultGraph or list(NamedNode or BlankNode or DefaultGraph) or None, optional
|
|
||||||
/// :param named_graphs: list of the named graphs that could be used in SPARQL `GRAPH` clause. By default, all the store named graphs are available.
|
|
||||||
/// :type named_graphs: list(NamedNode or BlankNode) or None, optional
|
|
||||||
/// :return: a :py:class:`bool` for ``ASK`` queries, an iterator of :py:class:`Triple` for ``CONSTRUCT`` and ``DESCRIBE`` queries and an iterator of :py:class:`QuerySolution` for ``SELECT`` queries.
|
|
||||||
/// :rtype: QuerySolutions or QueryTriples or bool
|
|
||||||
/// :raises SyntaxError: if the provided query is invalid
|
|
||||||
///
|
|
||||||
/// ``SELECT`` query:
|
|
||||||
///
|
|
||||||
/// >>> store = MemoryStore()
|
|
||||||
/// >>> store.add(Quad(NamedNode('http://example.com'), NamedNode('http://example.com/p'), Literal('1')))
|
|
||||||
/// >>> list(solution['s'] for solution in store.query('SELECT ?s WHERE { ?s ?p ?o }'))
|
|
||||||
/// [<NamedNode value=http://example.com>]
|
|
||||||
///
|
|
||||||
/// ``CONSTRUCT`` query:
|
|
||||||
///
|
|
||||||
/// >>> store = MemoryStore()
|
|
||||||
/// >>> store.add(Quad(NamedNode('http://example.com'), NamedNode('http://example.com/p'), Literal('1')))
|
|
||||||
/// >>> list(store.query('CONSTRUCT WHERE { ?s ?p ?o }'))
|
|
||||||
/// [<Triple subject=<NamedNode value=http://example.com> predicate=<NamedNode value=http://example.com/p> object=<Literal value=1 datatype=<NamedNode value=http://www.w3.org/2001/XMLSchema#string>>>]
|
|
||||||
///
|
|
||||||
/// ``ASK`` query:
|
|
||||||
///
|
|
||||||
/// >>> store = MemoryStore()
|
|
||||||
/// >>> store.add(Quad(NamedNode('http://example.com'), NamedNode('http://example.com/p'), Literal('1')))
|
|
||||||
/// >>> store.query('ASK { ?s ?p ?o }')
|
|
||||||
/// True
|
|
||||||
#[text_signature = "($self, query, *, use_default_graph_as_union, default_graph, named_graphs)"] |
|
||||||
#[args(
|
|
||||||
query, |
|
||||||
"*", |
|
||||||
use_default_graph_as_union = "false", |
|
||||||
default_graph = "None", |
|
||||||
named_graphs = "None" |
|
||||||
)] |
|
||||||
fn query( |
|
||||||
&self, |
|
||||||
query: &str, |
|
||||||
use_default_graph_as_union: bool, |
|
||||||
default_graph: Option<&PyAny>, |
|
||||||
named_graphs: Option<&PyAny>, |
|
||||||
py: Python<'_>, |
|
||||||
) -> PyResult<PyObject> { |
|
||||||
let query = parse_query( |
|
||||||
query, |
|
||||||
use_default_graph_as_union, |
|
||||||
default_graph, |
|
||||||
named_graphs, |
|
||||||
)?; |
|
||||||
let results = self.inner.query(query).map_err(map_evaluation_error)?; |
|
||||||
query_results_to_python(py, results) |
|
||||||
} |
|
||||||
|
|
||||||
/// Executes a `SPARQL 1.1 update <https://www.w3.org/TR/sparql11-update/>`_.
|
|
||||||
///
|
|
||||||
/// :param update: the update to execute
|
|
||||||
/// :type update: str
|
|
||||||
/// :raises SyntaxError: if the provided update is invalid
|
|
||||||
///
|
|
||||||
/// The store does not track the existence of empty named graphs.
|
|
||||||
/// This method has no ACID guarantees.
|
|
||||||
///
|
|
||||||
/// ``INSERT DATA`` update:
|
|
||||||
///
|
|
||||||
/// >>> store = MemoryStore()
|
|
||||||
/// >>> store.update('INSERT DATA { <http://example.com> <http://example.com/p> "1" }')
|
|
||||||
/// >>> list(store)
|
|
||||||
/// [<Quad subject=<NamedNode value=http://example.com> predicate=<NamedNode value=http://example.com/p> object=<Literal value=1 datatype=<NamedNode value=http://www.w3.org/2001/XMLSchema#string>> graph_name=<DefaultGraph>>]
|
|
||||||
///
|
|
||||||
/// ``DELETE DATA`` update:
|
|
||||||
///
|
|
||||||
/// >>> store = MemoryStore()
|
|
||||||
/// >>> store.add(Quad(NamedNode('http://example.com'), NamedNode('http://example.com/p'), Literal('1')))
|
|
||||||
/// >>> store.update('DELETE DATA { <http://example.com> <http://example.com/p> "1" }')
|
|
||||||
/// >>> list(store)
|
|
||||||
/// []
|
|
||||||
///
|
|
||||||
/// ``DELETE`` update:
|
|
||||||
///
|
|
||||||
/// >>> store = MemoryStore()
|
|
||||||
/// >>> store.add(Quad(NamedNode('http://example.com'), NamedNode('http://example.com/p'), Literal('1')))
|
|
||||||
/// >>> store.update('DELETE WHERE { <http://example.com> ?p ?o }')
|
|
||||||
/// >>> list(store)
|
|
||||||
/// []
|
|
||||||
#[text_signature = "($self, update)"] |
|
||||||
fn update(&self, update: &str) -> PyResult<()> { |
|
||||||
self.inner.update(update).map_err(map_evaluation_error) |
|
||||||
} |
|
||||||
|
|
||||||
/// Loads an RDF serialization into the store
|
|
||||||
///
|
|
||||||
/// It currently supports the following formats:
|
|
||||||
///
|
|
||||||
/// * `N-Triples <https://www.w3.org/TR/n-triples/>`_ (``application/n-triples``)
|
|
||||||
/// * `N-Quads <https://www.w3.org/TR/n-quads/>`_ (``application/n-quads``)
|
|
||||||
/// * `Turtle <https://www.w3.org/TR/turtle/>`_ (``text/turtle``)
|
|
||||||
/// * `TriG <https://www.w3.org/TR/trig/>`_ (``application/trig``)
|
|
||||||
/// * `RDF/XML <https://www.w3.org/TR/rdf-syntax-grammar/>`_ (``application/rdf+xml``)
|
|
||||||
///
|
|
||||||
/// It supports also some MIME type aliases.
|
|
||||||
/// For example ``application/turtle`` could also be used for `Turtle <https://www.w3.org/TR/turtle/>`_
|
|
||||||
/// and ``application/xml`` for `RDF/XML <https://www.w3.org/TR/rdf-syntax-grammar/>`_.
|
|
||||||
///
|
|
||||||
/// :param input: The binary I/O object to read from. For example, it could be a file opened in binary mode with ``open('my_file.ttl', 'rb')``.
|
|
||||||
/// :type input: io.RawIOBase or io.BufferedIOBase
|
|
||||||
/// :param mime_type: the MIME type of the RDF serialization
|
|
||||||
/// :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 to_graph: if it is a file composed of triples, the graph in which store the triples. By default, the default graph is used.
|
|
||||||
/// :type to_graph: NamedNode or BlankNode or DefaultGraph or None, optional
|
|
||||||
/// :raises ValueError: if the MIME type is not supported or the `to_graph` parameter is given with a quad file.
|
|
||||||
/// :raises SyntaxError: if the provided data is invalid
|
|
||||||
///
|
|
||||||
/// >>> store = MemoryStore()
|
|
||||||
/// >>> store.load(io.BytesIO(b'<foo> <p> "1" .'), "text/turtle", base_iri="http://example.com/", to_graph=NamedNode("http://example.com/g"))
|
|
||||||
/// >>> list(store)
|
|
||||||
/// [<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=<NamedNode value=http://example.com/g>>]
|
|
||||||
#[text_signature = "($self, input, /, mime_type, *, base_iri = None, to_graph = None)"] |
|
||||||
#[args(input, mime_type, "*", base_iri = "None", to_graph = "None")] |
|
||||||
fn load( |
|
||||||
&self, |
|
||||||
input: PyObject, |
|
||||||
mime_type: &str, |
|
||||||
base_iri: Option<&str>, |
|
||||||
to_graph: Option<&PyAny>, |
|
||||||
) -> PyResult<()> { |
|
||||||
let to_graph_name = if let Some(graph_name) = to_graph { |
|
||||||
Some(PyGraphNameRef::try_from(graph_name)?) |
|
||||||
} else { |
|
||||||
None |
|
||||||
}; |
|
||||||
let input = BufReader::new(PyFileLike::new(input)); |
|
||||||
if let Some(graph_format) = GraphFormat::from_media_type(mime_type) { |
|
||||||
self.inner |
|
||||||
.load_graph( |
|
||||||
input, |
|
||||||
graph_format, |
|
||||||
&to_graph_name.unwrap_or(PyGraphNameRef::DefaultGraph), |
|
||||||
base_iri, |
|
||||||
) |
|
||||||
.map_err(map_io_err) |
|
||||||
} 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) |
|
||||||
.map_err(map_io_err) |
|
||||||
} else { |
|
||||||
Err(PyValueError::new_err(format!( |
|
||||||
"Not supported MIME type: {}", |
|
||||||
mime_type |
|
||||||
))) |
|
||||||
} |
|
||||||
} |
|
||||||
|
|
||||||
/// Dumps the store quads or triples into a file
|
|
||||||
///
|
|
||||||
/// It currently supports the following formats:
|
|
||||||
///
|
|
||||||
/// * `N-Triples <https://www.w3.org/TR/n-triples/>`_ (``application/n-triples``)
|
|
||||||
/// * `N-Quads <https://www.w3.org/TR/n-quads/>`_ (``application/n-quads``)
|
|
||||||
/// * `Turtle <https://www.w3.org/TR/turtle/>`_ (``text/turtle``)
|
|
||||||
/// * `TriG <https://www.w3.org/TR/trig/>`_ (``application/trig``)
|
|
||||||
/// * `RDF/XML <https://www.w3.org/TR/rdf-syntax-grammar/>`_ (``application/rdf+xml``)
|
|
||||||
///
|
|
||||||
/// It supports also some MIME type aliases.
|
|
||||||
/// For example ``application/turtle`` could also be used for `Turtle <https://www.w3.org/TR/turtle/>`_
|
|
||||||
/// and ``application/xml`` for `RDF/XML <https://www.w3.org/TR/rdf-syntax-grammar/>`_.
|
|
||||||
///
|
|
||||||
/// :param output: The binary I/O object to write to. For example, it could be a file opened in binary mode with ``open('my_file.ttl', 'wb')``.
|
|
||||||
/// :type input: io.RawIOBase or io.BufferedIOBase
|
|
||||||
/// :param mime_type: the MIME type of the RDF serialization
|
|
||||||
/// :type mime_type: str
|
|
||||||
/// :param from_graph: if a triple based format is requested, the store graph from which dump the triples. By default, the default graph is used.
|
|
||||||
/// :type from_graph: NamedNode or BlankNode or DefaultGraph or None, optional
|
|
||||||
/// :raises ValueError: if the MIME type is not supported or the `from_graph` parameter is given with a quad syntax.
|
|
||||||
///
|
|
||||||
/// >>> store = MemoryStore()
|
|
||||||
/// >>> store.add(Quad(NamedNode('http://example.com'), NamedNode('http://example.com/p'), Literal('1'), NamedNode('http://example.com/g')))
|
|
||||||
/// >>> output = io.BytesIO()
|
|
||||||
/// >>> store.dump(output, "text/turtle", from_graph=NamedNode("http://example.com/g"))
|
|
||||||
/// >>> output.getvalue()
|
|
||||||
/// b'<http://example.com> <http://example.com/p> "1" .\n'
|
|
||||||
#[text_signature = "($self, output, /, mime_type, *, from_graph = None)"] |
|
||||||
#[args(output, mime_type, "*", from_graph = "None")] |
|
||||||
fn dump(&self, output: PyObject, mime_type: &str, from_graph: Option<&PyAny>) -> PyResult<()> { |
|
||||||
let from_graph_name = if let Some(graph_name) = from_graph { |
|
||||||
Some(PyGraphNameRef::try_from(graph_name)?) |
|
||||||
} else { |
|
||||||
None |
|
||||||
}; |
|
||||||
let output = PyFileLike::new(output); |
|
||||||
if let Some(graph_format) = GraphFormat::from_media_type(mime_type) { |
|
||||||
self.inner |
|
||||||
.dump_graph( |
|
||||||
output, |
|
||||||
graph_format, |
|
||||||
&from_graph_name.unwrap_or(PyGraphNameRef::DefaultGraph), |
|
||||||
) |
|
||||||
.map_err(map_io_err) |
|
||||||
} else if let Some(dataset_format) = DatasetFormat::from_media_type(mime_type) { |
|
||||||
if from_graph_name.is_some() { |
|
||||||
return Err(PyValueError::new_err( |
|
||||||
"The target graph name parameter is not available for dataset formats", |
|
||||||
)); |
|
||||||
} |
|
||||||
self.inner |
|
||||||
.dump_dataset(output, dataset_format) |
|
||||||
.map_err(map_io_err) |
|
||||||
} else { |
|
||||||
Err(PyValueError::new_err(format!( |
|
||||||
"Not supported MIME type: {}", |
|
||||||
mime_type |
|
||||||
))) |
|
||||||
} |
|
||||||
} |
|
||||||
|
|
||||||
/// Returns an iterator over all the store named graphs
|
|
||||||
///
|
|
||||||
/// :return: an iterator of the store graph names
|
|
||||||
/// :rtype: iter(NamedNode or BlankNode)
|
|
||||||
///
|
|
||||||
/// >>> store = MemoryStore()
|
|
||||||
/// >>> store.add(Quad(NamedNode('http://example.com'), NamedNode('http://example.com/p'), Literal('1'), NamedNode('http://example.com/g')))
|
|
||||||
/// >>> list(store.named_graphs())
|
|
||||||
/// [<NamedNode value=http://example.com/g>]
|
|
||||||
#[text_signature = "($self)"] |
|
||||||
fn named_graphs(&self) -> GraphNameIter { |
|
||||||
GraphNameIter { |
|
||||||
inner: self.inner.named_graphs(), |
|
||||||
} |
|
||||||
} |
|
||||||
|
|
||||||
/// Adds a named graph to the store
|
|
||||||
///
|
|
||||||
/// :param graph_name: the name of the name graph to add
|
|
||||||
/// :type graph_name: NamedNode or BlankNode
|
|
||||||
///
|
|
||||||
/// >>> store = MemoryStore()
|
|
||||||
/// >>> store.add_graph(NamedNode('http://example.com/g'))
|
|
||||||
/// >>> list(store.named_graphs())
|
|
||||||
/// [<NamedNode value=http://example.com/g>]
|
|
||||||
#[text_signature = "($self, graph_name)"] |
|
||||||
fn add_graph(&self, graph_name: PyGraphName) { |
|
||||||
match graph_name { |
|
||||||
PyGraphName::DefaultGraph(_) => (), |
|
||||||
PyGraphName::NamedNode(graph_name) => self.inner.insert_named_graph(graph_name), |
|
||||||
PyGraphName::BlankNode(graph_name) => self.inner.insert_named_graph(graph_name), |
|
||||||
} |
|
||||||
} |
|
||||||
|
|
||||||
/// Removes a graph from the store
|
|
||||||
///
|
|
||||||
/// The default graph will not be remove but just cleared.
|
|
||||||
///
|
|
||||||
/// :param graph_name: the name of the name graph to remove
|
|
||||||
/// :type graph_name: NamedNode or BlankNode or DefaultGraph
|
|
||||||
///
|
|
||||||
/// >>> store = MemoryStore()
|
|
||||||
/// >>> quad = Quad(NamedNode('http://example.com'), NamedNode('http://example.com/p'), Literal('1'), NamedNode('http://example.com/g'))
|
|
||||||
/// >>> store.remove_graph(NamedNode('http://example.com/g'))
|
|
||||||
/// >>> list(store)
|
|
||||||
/// []
|
|
||||||
#[text_signature = "($self, graph_name)"] |
|
||||||
fn remove_graph(&self, graph_name: &PyAny) -> PyResult<()> { |
|
||||||
match PyGraphNameRef::try_from(graph_name)? { |
|
||||||
PyGraphNameRef::DefaultGraph => self.inner.clear_graph(GraphNameRef::DefaultGraph), |
|
||||||
PyGraphNameRef::NamedNode(graph_name) => self |
|
||||||
.inner |
|
||||||
.remove_named_graph(&PyNamedOrBlankNodeRef::NamedNode(graph_name)), |
|
||||||
PyGraphNameRef::BlankNode(graph_name) => self |
|
||||||
.inner |
|
||||||
.remove_named_graph(&PyNamedOrBlankNodeRef::BlankNode(graph_name)), |
|
||||||
} |
|
||||||
Ok(()) |
|
||||||
} |
|
||||||
} |
|
||||||
|
|
||||||
#[pyproto] |
|
||||||
impl PyObjectProtocol for PyMemoryStore { |
|
||||||
fn __str__(&self) -> String { |
|
||||||
self.inner.to_string() |
|
||||||
} |
|
||||||
|
|
||||||
fn __richcmp__(&self, other: &PyCell<Self>, op: CompareOp) -> PyResult<bool> { |
|
||||||
let other: &PyMemoryStore = &other.borrow(); |
|
||||||
match op { |
|
||||||
CompareOp::Eq => Ok(self == other), |
|
||||||
CompareOp::Ne => Ok(self != other), |
|
||||||
_ => Err(PyNotImplementedError::new_err( |
|
||||||
"Ordering is not implemented", |
|
||||||
)), |
|
||||||
} |
|
||||||
} |
|
||||||
|
|
||||||
fn __bool__(&self) -> bool { |
|
||||||
!self.inner.is_empty() |
|
||||||
} |
|
||||||
} |
|
||||||
|
|
||||||
#[pyproto] |
|
||||||
impl<'p> PySequenceProtocol<'p> for PyMemoryStore { |
|
||||||
fn __len__(&self) -> usize { |
|
||||||
self.inner.len() |
|
||||||
} |
|
||||||
|
|
||||||
fn __contains__(&self, quad: PyQuad) -> bool { |
|
||||||
self.inner.contains(&quad) |
|
||||||
} |
|
||||||
} |
|
||||||
|
|
||||||
#[pyproto] |
|
||||||
impl PyIterProtocol for PyMemoryStore { |
|
||||||
fn __iter__(slf: PyRef<Self>) -> QuadIter { |
|
||||||
QuadIter { |
|
||||||
inner: slf.inner.iter(), |
|
||||||
} |
|
||||||
} |
|
||||||
} |
|
||||||
|
|
||||||
#[pyclass(unsendable, module = "oxigraph")] |
|
||||||
pub struct QuadIter { |
|
||||||
inner: MemoryQuadIter, |
|
||||||
} |
|
||||||
|
|
||||||
#[pyproto] |
|
||||||
impl PyIterProtocol for QuadIter { |
|
||||||
fn __iter__(slf: PyRefMut<Self>) -> Py<Self> { |
|
||||||
slf.into() |
|
||||||
} |
|
||||||
|
|
||||||
fn __next__(mut slf: PyRefMut<Self>) -> Option<PyQuad> { |
|
||||||
slf.inner.next().map(|q| q.into()) |
|
||||||
} |
|
||||||
} |
|
||||||
|
|
||||||
#[pyclass(unsendable, module = "oxigraph")] |
|
||||||
pub struct GraphNameIter { |
|
||||||
inner: MemoryGraphNameIter, |
|
||||||
} |
|
||||||
|
|
||||||
#[pyproto] |
|
||||||
impl PyIterProtocol for GraphNameIter { |
|
||||||
fn __iter__(slf: PyRefMut<Self>) -> Py<Self> { |
|
||||||
slf.into() |
|
||||||
} |
|
||||||
|
|
||||||
fn __next__(mut slf: PyRefMut<Self>) -> Option<PyNamedOrBlankNode> { |
|
||||||
slf.inner.next().map(|q| q.into()) |
|
||||||
} |
|
||||||
} |
|
||||||
@ -1,54 +0,0 @@ |
|||||||
use crate::model::*; |
|
||||||
use pyo3::exceptions::{PyIOError, PySyntaxError, PyValueError}; |
|
||||||
use pyo3::{PyAny, PyErr, PyResult}; |
|
||||||
use std::convert::TryInto; |
|
||||||
use std::io; |
|
||||||
|
|
||||||
pub fn extract_quads_pattern<'a>( |
|
||||||
subject: &'a PyAny, |
|
||||||
predicate: &'a PyAny, |
|
||||||
object: &'a PyAny, |
|
||||||
graph_name: Option<&'a PyAny>, |
|
||||||
) -> PyResult<( |
|
||||||
Option<PyNamedOrBlankNodeRef<'a>>, |
|
||||||
Option<PyNamedNodeRef<'a>>, |
|
||||||
Option<PyTermRef<'a>>, |
|
||||||
Option<PyGraphNameRef<'a>>, |
|
||||||
)> { |
|
||||||
Ok(( |
|
||||||
if subject.is_none() { |
|
||||||
None |
|
||||||
} else { |
|
||||||
Some(subject.try_into()?) |
|
||||||
}, |
|
||||||
if predicate.is_none() { |
|
||||||
None |
|
||||||
} else { |
|
||||||
Some(predicate.try_into()?) |
|
||||||
}, |
|
||||||
if object.is_none() { |
|
||||||
None |
|
||||||
} else { |
|
||||||
Some(object.try_into()?) |
|
||||||
}, |
|
||||||
if let Some(graph_name) = graph_name { |
|
||||||
if graph_name.is_none() { |
|
||||||
None |
|
||||||
} else { |
|
||||||
Some(graph_name.try_into()?) |
|
||||||
} |
|
||||||
} else { |
|
||||||
None |
|
||||||
}, |
|
||||||
)) |
|
||||||
} |
|
||||||
|
|
||||||
pub fn map_io_err(error: io::Error) -> PyErr { |
|
||||||
match error.kind() { |
|
||||||
io::ErrorKind::InvalidInput => PyValueError::new_err(error.to_string()), |
|
||||||
io::ErrorKind::InvalidData | io::ErrorKind::UnexpectedEof => { |
|
||||||
PySyntaxError::new_err(error.to_string()) |
|
||||||
} |
|
||||||
_ => PyIOError::new_err(error.to_string()), |
|
||||||
} |
|
||||||
} |
|
||||||
Loading…
Reference in new issue