Oxigraph is a work in progress graph database implementing the [SPARQL](https://www.w3.org/TR/sparql11-overview/) standard.
There is no released version yet.
The storage format is not stable yet and may be brocken at any time.
The storage format is not stable yet and may be at any time.
Its goal is to provide a compliant, safe and fast graph database based on the [RocksDB](https://rocksdb.org/) and [Sled](https://sled.rs/) key-value stores.
This package provides a JavaScript API on top of Oxigraph compiled with WebAssembly.
@ -10,7 +11,7 @@ Oxigraph is a work in progress graph database written in Rust implementing the [
It is a work in progress and currently offers a simple in-memory store with [SPARQL 1.1 Query](https://www.w3.org/TR/sparql11-query/) capabilities.
The store is also able to load RDF serialized in [Turtle](https://www.w3.org/TR/turtle/), [TriG](https://www.w3.org/TR/trig/), [N-Triples](https://www.w3.org/TR/n-triples/), [N-Quads](https://www.w3.org/TR/n-quads/) and [RDFXML](https://www.w3.org/TR/rdf-syntax-grammar/).
The store is also able to load RDF serialized in [Turtle](https://www.w3.org/TR/turtle/), [TriG](https://www.w3.org/TR/trig/), [N-Triples](https://www.w3.org/TR/n-triples/), [N-Quads](https://www.w3.org/TR/n-quads/) and [RDF/XML](https://www.w3.org/TR/rdf-syntax-grammar/).
It is distributed using a [a NPM package](https://www.npmjs.com/package/oxigraph) that should work with nodeJS.
This package provides a Python API on top of Oxigraph.
This Python package provides a Python API on top of Oxigraph named `pyoxigraph`.
Oxigraph is a work in progress graph database written in Rust implementing the [SPARQL](https://www.w3.org/TR/sparql11-overview/) standard.
Oxigraph is a graph database implementing the [SPARQL](https://www.w3.org/TR/sparql11-overview/) standard.
It offers two stores with [SPARQL 1.1 Query](https://www.w3.org/TR/sparql11-query/) capabilities.
One of the store is in-memory, and the other one is disk based.
The store is also able to load RDF serialized in [Turtle](https://www.w3.org/TR/turtle/), [TriG](https://www.w3.org/TR/trig/), [N-Triples](https://www.w3.org/TR/n-triples/), [N-Quads](https://www.w3.org/TR/n-quads/) and [RDF XML](https://www.w3.org/TR/rdf-syntax-grammar/).
It also provides a set of utility functions for reading, writing and processing RDF files.
The stores are also able to load and dump RDF data serialized in
/// Executes a `SPARQL 1.1 query <https://www.w3.org/TR/sparql11-query/>`_.
///
/// :param query: the query to execute
/// :type query: str
/// :return: a :py:class:`bool` for ``ASK`` queries, an iterator of :py:class:`Triple` for ``CONSTRUCT`` and ``DESCRIBE`` queries and an iterator of solution bindings for ``SELECT`` queries.
/// :rtype: iter(QuerySolution) or iter(Triple) or bool
/// :raises SyntaxError: if the provided query is invalid
@ -78,7 +96,17 @@ impl PyObjectProtocol for PyNamedNode {
}
}
/// An RDF `blank node <https://www.w3.org/TR/rdf11-concepts/#dfn-blank-node>`_
///
/// :param value: the `blank node ID <https://www.w3.org/TR/rdf11-concepts/#dfn-blank-node-identifier>`_ (if not present, a random blank node ID is automatically generated).
/// :type value: str, optional
///
/// The :py:func:`str` function provides a serialization compatible with NTriples, Turtle and SPARQL:
///
/// >>> str(BlankNode('ex'))
/// '_:ex'
#[pyclass(name = BlankNode)]
#[text_signature = "(value)"]
#[derive(Eq, PartialEq, Debug, Clone, Hash)]
pubstructPyBlankNode{
inner: BlankNode,
@ -126,6 +154,11 @@ impl PyBlankNode {
.into())
}
/// :return: the `blank node ID <https://www.w3.org/TR/rdf11-concepts/#dfn-blank-node-identifier>`_
/// :rtype: str
///
/// >>> BlankNode("ex").value
/// 'ex'
#[getter]
fnvalue(&self)-> &str{
self.inner.as_str()
@ -139,7 +172,9 @@ impl PyObjectProtocol for PyBlankNode {
@ -151,7 +186,26 @@ impl PyObjectProtocol for PyBlankNode {
}
}
/// An RDF `literal <https://www.w3.org/TR/rdf11-concepts/#dfn-literal>`_
///
/// :param value: the literal value or `lexical form <https://www.w3.org/TR/rdf11-concepts/#dfn-lexical-form>`_
/// :type value: str
/// :param datatype: the literal `datatype IRI <https://www.w3.org/TR/rdf11-concepts/#dfn-datatype-iri>`_.
/// :type datatype: NamedNode, optional
/// :param language: the literal `language tag <https://www.w3.org/TR/rdf11-concepts/#dfn-language-tag>`_
/// :type language: str, optional
/// :raises ValueError: if the language tag is not valid according to `RFC 5646 <https://tools.ietf.org/rfc/rfc5646>`_ (`BCP 47 <https://tools.ietf.org/rfc/bcp/bcp47>`_)
///
/// The :py:func:`str` function provides a serialization compatible with NTriples, Turtle and SPARQL:
/// Store based on the `Sled <https://sled.rs/>`_ key-value database.
///
/// In-memory store.
/// It encodes a `RDF dataset <https://www.w3.org/TR/rdf11-concepts/#dfn-rdf-dataset>`_ and allows to query and update it using SPARQL.
///
/// :param path: the path of the directory in which Sled should read and write its data. If the directoty does not exist, it is created. If no directory is provided a temporary one is created and removed when the Python garbage collector removes the store.
/// :type path: str or None
/// :raises IOError: if the target directory contains invalid data or could not be accessed
///
/// Warning: Sled is not stable yet and might break its storage format.
///
/// The :py:func:`str` function provides a serialization of the store data compatible with NTriples, Turtle and SPARQL:
/// Executes a `SPARQL 1.1 query <https://www.w3.org/TR/sparql11-query/>`_.
///
/// :param query: the query to execute
/// :type query: str
/// :return: a :py:class:`bool` for ``ASK`` queries, an iterator of :py:class:`Triple` for ``CONSTRUCT`` and ``DESCRIBE`` queries and an iterator of solution bindings for ``SELECT`` queries.
/// :rtype: iter(QuerySolution) or iter(Triple) or bool
/// :raises SyntaxError: if the provided query is invalid
/// :raises IOError: if an I/O error happens while reading the store
Tpt
4 years ago