Tpt
3 years ago
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[package] |
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name = "oxigraph_js" |
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version = "0.3.0-dev" |
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authors = ["Tpt <thomas@pellissier-tanon.fr>"] |
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license = "MIT OR Apache-2.0" |
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readme = "README.md" |
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keywords = ["RDF", "N-Triples", "Turtle", "RDF/XML", "SPARQL"] |
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repository = "https://github.com/oxigraph/oxigraph/tree/master/js" |
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description = "JavaScript bindings of Oxigraph" |
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edition = "2018" |
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|
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[lib] |
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crate-type = ["cdylib"] |
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name = "oxigraph" |
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|
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[dependencies] |
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oxigraph = { version = "0.3.0-dev", path="../lib" } |
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wasm-bindgen = "0.2" |
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js-sys = "0.3" |
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console_error_panic_hook = "0.1" |
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|
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[dev-dependencies] |
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wasm-bindgen-test = "0.3" |
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Oxigraph for JavaScript |
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======================= |
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|
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[](https://www.npmjs.com/package/oxigraph) |
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[](https://github.com/oxigraph/oxigraph/actions) |
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[](https://gitter.im/oxigraph/community?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge) |
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|
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This package provides a JavaScript API on top of [Oxigraph](https://crates.io/crates/oxigraph), compiled with WebAssembly. |
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Oxigraph is a graph database written in Rust implementing the [SPARQL](https://www.w3.org/TR/sparql11-overview/) standard. |
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Oxigraph for JavaScript 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/) and [SPARQL 1.1 Update](https://www.w3.org/TR/sparql11-update/) capabilities. |
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|
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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/). |
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|
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|
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It is distributed using a [a NPM package](https://www.npmjs.com/package/oxigraph) that should work with nodeJS 12+. |
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|
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```bash |
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npm install oxigraph |
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``` |
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|
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```js |
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const oxigraph = require('oxigraph'); |
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``` |
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|
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## Example |
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|
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Insert the triple `<http://example/> <http://schema.org/name> "example"` and log the name of `<http://example/>` in SPARQL: |
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```js |
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const { MemoryStore } = require('oxigraph'); |
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const store = new MemoryStore(); |
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const dataFactory = store.dataFactory; |
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const ex = dataFactory.namedNode("http://example/"); |
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const schemaName = dataFactory.namedNode("http://schema.org/name"); |
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store.add(dataFactory.triple(ex, schemaName, dataFactory.literal("example"))); |
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for (binding of store.query("SELECT ?name WHERE { <http://example/> <http://schema.org/name> ?name }")) { |
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console.log(binding.get("name").value); |
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} |
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``` |
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|
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## API |
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|
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Oxigraph currently provides a simple JS API. |
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It is centered around the `MemoryStore` class. |
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The `NamedNode`, `BlankNode`, `Literal`, `DefaultGraph`, `Quad` and `DataFactory` types |
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are following the [RDF/JS datamodel specification](https://rdf.js.org/data-model-spec/). |
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To import `MemoryStore` using Node: |
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```js |
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const { MemoryStore } = require('oxigraph'); |
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``` |
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|
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### `MemoryStore` |
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|
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#### `MemoryStore(optional sequence<Quad>? quads)` (constructor) |
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```js |
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const store = new MemoryStore(); |
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``` |
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If provided, the `MemoryStore` will be initialized with a sequence of quads. |
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|
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#### `MemoryStore.dataFactory` |
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Returns a `DataFactory` following [RDF/JS datamodel specification](https://rdf.js.org/data-model-spec/). |
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|
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Example: |
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```js |
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const store = new MemoryStore(); |
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const ex = store.dataFactory.namedNode("http://example.com"); |
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const blank = store.dataFactory.blankNode(); |
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const foo = store.dataFactory.literal("foo"); |
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const quad = store.dataFactory.quad(blank, ex, foo); |
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``` |
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|
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#### `MemoryStore.prototype.add(Quad quad)` |
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Inserts a quad in the store. |
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Example: |
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```js |
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store.add(quad); |
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``` |
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|
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#### `MemoryStore.prototype.delete(Quad quad)` |
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Removes a quad from the store. |
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Example: |
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```js |
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store.delete(quad); |
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``` |
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|
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#### `MemoryStore.prototype.has(Quad quad)` |
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Returns a boolean stating if the store contains the quad. |
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Example: |
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```js |
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store.has(quad); |
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``` |
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#### `MemoryStore.prototype.match(optional Term? subject, optional Term? predicate, optional Term? object, optional Term? graph)` |
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Returns an array with all the quads matching a given quad pattern. |
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Example to get all quads in the default graph with `ex` for subject: |
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```js |
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store.match(ex, null, null, store.dataFactory.defaultGraph()); |
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``` |
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Example to get all quads: |
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```js |
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store.match(); |
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``` |
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#### `MemoryStore.prototype.query(String query)` |
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Executes a [SPARQL 1.1 Query](https://www.w3.org/TR/sparql11-query/). |
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For `SELECT` queries the return type is an array of `Map` which keys are the bound variables and values are the values the result is bound to. |
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For `CONSTRUCT` and `ÐESCRIBE` queries the return type is an array of `Quad`. |
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For `ASK` queries the return type is a boolean. |
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Example of SELECT query: |
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```js |
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for (binding of store.query("SELECT DISTINCT ?s WHERE { ?s ?p ?o }")) { |
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console.log(binding.get("s").value); |
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} |
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``` |
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Example of CONSTRUCT query: |
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```js |
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const filteredStore = new MemoryStore(store.query("CONSTRUCT { <http:/example.com/> ?p ?o } WHERE { <http:/example.com/> ?p ?o }")); |
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``` |
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Example of ASK query: |
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```js |
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if (store.query("ASK { ?s ?s ?s }")) { |
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console.log("there is a triple with same subject, predicate and object"); |
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} |
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``` |
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#### `MemoryStore.prototype.update(String query)` |
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Executes a [SPARQL 1.1 Update](https://www.w3.org/TR/sparql11-update/). |
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The [`LOAD` operation](https://www.w3.org/TR/sparql11-update/#load) is not supported yet. |
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Example of update: |
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```js |
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store.update("DELETE WHERE { <http://example.com/s> ?p ?o }") |
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``` |
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### `MemoryStore.prototype.load(String data, String mimeType, NamedNode|String? baseIRI, NamedNode|BlankNode|DefaultGraph? toNamedGraph)` |
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Loads serialized RDF triples or quad into the store. |
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The method arguments are: |
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1. `data`: the serialized RDF triples or quads. |
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2. `mimeType`: the MIME type of the serialization. See below for the supported mime types. |
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3. `baseIRI`: the base IRI to use to resolve the relative IRIs in the serialization. |
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4. `toNamedGraph`: for triple serialization formats, the name of the named graph the triple should be loaded to. |
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The available formats are: |
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* [Turtle](https://www.w3.org/TR/turtle/): `text/turtle` |
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* [TriG](https://www.w3.org/TR/trig/): `application/trig` |
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* [N-Triples](https://www.w3.org/TR/n-triples/): `application/n-triples` |
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* [N-Quads](https://www.w3.org/TR/n-quads/): `application/n-quads` |
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* [RDF/XML](https://www.w3.org/TR/rdf-syntax-grammar/): `application/rdf+xml` |
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Example of loading a Turtle file into the named graph `<http://example.com/graph>` with the base IRI `http://example.com`: |
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```js |
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store.load("<http://example.com> <http://example.com> <> .", "text/turtle", "http://example.com", store.dataFactory.namedNode("http://example.com/graph")); |
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``` |
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### `MemoryStore.prototype.dump(String mimeType, NamedNode|BlankNode|DefaultGraph? fromNamedGraph)` |
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Returns serialized RDF triples or quad from the store. |
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The method arguments are: |
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1. `mimeType`: the MIME type of the serialization. See below for the supported mime types. |
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2. `fromNamedGraph`: for triple serialization formats, the name of the named graph the triple should be loaded from. |
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The available formats are: |
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* [Turtle](https://www.w3.org/TR/turtle/): `text/turtle` |
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* [TriG](https://www.w3.org/TR/trig/): `application/trig` |
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* [N-Triples](https://www.w3.org/TR/n-triples/): `application/n-triples` |
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* [N-Quads](https://www.w3.org/TR/n-quads/): `application/n-quads` |
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* [RDF/XML](https://www.w3.org/TR/rdf-syntax-grammar/): `application/rdf+xml` |
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Example of building a Turtle file from the named graph `<http://example.com/graph>`: |
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```js |
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store.dump("text/turtle", store.dataFactory.namedNode("http://example.com/graph")); |
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``` |
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## How to contribute |
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The Oxigraph bindings are written in Rust using [the Rust WASM toolkit](https://rustwasm.github.io/docs.html). |
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The [The Rust Wasm Book](https://rustwasm.github.io/docs/book/) is a great tutorial to get started. |
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To run the tests of the JS bindings written in JS run `npm test`. |
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## License |
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This project is licensed under either of |
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* Apache License, Version 2.0, ([LICENSE-APACHE](../LICENSE-APACHE) or |
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http://www.apache.org/licenses/LICENSE-2.0) |
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* MIT license ([LICENSE-MIT](../LICENSE-MIT) or |
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http://opensource.org/licenses/MIT) |
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at your option. |
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### Contribution |
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Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in Futures by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions. |
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@ -0,0 +1,15 @@ |
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{ |
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"name": "oxigraph_tests", |
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"description": "Oxigraph JS build and tests", |
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"private": true, |
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"devDependencies": { |
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"mocha": "^8.0.1", |
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"@rdfjs/data-model": "1.1.2", |
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"standard": "^16.0.0" |
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}, |
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"scripts": { |
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"test": "standard test/*.js && wasm-pack build --dev --target nodejs && mocha", |
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"build": "wasm-pack build --release --target nodejs && sed -i 's/oxigraph_js/oxigraph/g' pkg/package.json", |
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"release": "wasm-pack pack && wasm-pack publish" |
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} |
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} |
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mod model; |
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mod store; |
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mod utils; |
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use crate::format_err; |
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use crate::utils::to_err; |
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use js_sys::{Reflect, UriError}; |
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use oxigraph::model::*; |
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use std::convert::TryFrom; |
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use wasm_bindgen::prelude::*; |
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#[wasm_bindgen(js_name = DataFactory)] |
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#[derive(Default)] |
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pub struct JsDataFactory { |
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from_js: FromJsConverter, |
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} |
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#[wasm_bindgen(js_class = DataFactory)] |
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impl JsDataFactory { |
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#[wasm_bindgen(js_name = namedNode)] |
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pub fn named_node(&self, value: String) -> Result<JsNamedNode, JsValue> { |
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NamedNode::new(value) |
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.map(|v| v.into()) |
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.map_err(|v| UriError::new(&v.to_string()).into()) |
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} |
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#[wasm_bindgen(js_name = blankNode)] |
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pub fn blank_node(&self, value: Option<String>) -> Result<JsBlankNode, JsValue> { |
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Ok(if let Some(value) = value { |
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BlankNode::new(value).map_err(to_err)? |
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} else { |
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BlankNode::default() |
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} |
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.into()) |
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} |
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#[wasm_bindgen] |
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pub fn literal( |
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&self, |
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value: Option<String>, |
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language_or_datatype: &JsValue, |
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) -> Result<JsLiteral, JsValue> { |
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if language_or_datatype.is_null() || language_or_datatype.is_undefined() { |
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Ok(Literal::new_simple_literal(value.unwrap_or_else(String::new)).into()) |
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} else if language_or_datatype.is_string() { |
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Ok(Literal::new_language_tagged_literal( |
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value.unwrap_or_else(String::new), |
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language_or_datatype.as_string().unwrap_or_else(String::new), |
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) |
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.map_err(to_err)? |
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.into()) |
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} else if let JsTerm::NamedNode(datatype) = self.from_js.to_term(language_or_datatype)? { |
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Ok(Literal::new_typed_literal(value.unwrap_or_else(String::new), datatype).into()) |
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} else { |
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Err(format_err!("The literal datatype should be a NamedNode")) |
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} |
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} |
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#[wasm_bindgen(js_name = defaultGraph)] |
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pub fn default_graph(&self) -> JsDefaultGraph { |
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JsDefaultGraph {} |
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} |
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#[wasm_bindgen(js_name = triple)] |
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pub fn triple( |
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&self, |
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subject: &JsValue, |
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predicate: &JsValue, |
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object: &JsValue, |
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) -> Result<JsQuad, JsValue> { |
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Ok(JsQuad { |
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subject: self.from_js.to_term(subject)?, |
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predicate: self.from_js.to_term(predicate)?, |
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object: self.from_js.to_term(object)?, |
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graph_name: JsTerm::DefaultGraph(JsDefaultGraph {}), |
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}) |
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} |
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|
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#[wasm_bindgen(js_name = quad)] |
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pub fn quad( |
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&self, |
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subject: &JsValue, |
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predicate: &JsValue, |
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object: &JsValue, |
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graph: &JsValue, |
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) -> Result<JsQuad, JsValue> { |
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Ok(JsQuad { |
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subject: self.from_js.to_term(subject)?, |
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predicate: self.from_js.to_term(predicate)?, |
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object: self.from_js.to_term(object)?, |
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graph_name: if graph.is_undefined() || graph.is_null() { |
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JsTerm::DefaultGraph(JsDefaultGraph {}) |
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} else { |
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self.from_js.to_term(graph)? |
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}, |
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}) |
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} |
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#[wasm_bindgen(js_name = fromTerm)] |
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pub fn convert_term(&self, original: &JsValue) -> Result<JsValue, JsValue> { |
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Ok(self.from_js.to_term(original)?.into()) |
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} |
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#[wasm_bindgen(js_name = fromQuad)] |
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pub fn convert_quad(&self, original: &JsValue) -> Result<JsQuad, JsValue> { |
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self.from_js.to_quad(original) |
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} |
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} |
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|
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#[wasm_bindgen(js_name = NamedNode)] |
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#[derive(Eq, PartialEq, Debug, Clone, Hash)] |
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pub struct JsNamedNode { |
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inner: NamedNode, |
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} |
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#[wasm_bindgen(js_class = NamedNode)] |
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impl JsNamedNode { |
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#[wasm_bindgen(getter = termType)] |
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pub fn term_type(&self) -> String { |
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"NamedNode".to_owned() |
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} |
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#[wasm_bindgen(getter)] |
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pub fn value(&self) -> String { |
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self.inner.as_str().to_owned() |
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} |
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|
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pub fn equals(&self, other: &JsValue) -> bool { |
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if let Ok(Some(JsTerm::NamedNode(other))) = |
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FromJsConverter::default().to_optional_term(other) |
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{ |
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self == &other |
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} else { |
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false |
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} |
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} |
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} |
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|
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impl From<NamedNode> for JsNamedNode { |
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fn from(inner: NamedNode) -> Self { |
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Self { inner } |
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} |
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} |
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|
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impl From<JsNamedNode> for NamedNode { |
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fn from(node: JsNamedNode) -> Self { |
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node.inner |
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} |
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} |
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|
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impl From<JsNamedNode> for NamedOrBlankNode { |
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fn from(node: JsNamedNode) -> Self { |
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node.inner.into() |
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} |
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} |
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|
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impl From<JsNamedNode> for Subject { |
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fn from(node: JsNamedNode) -> Self { |
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node.inner.into() |
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} |
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} |
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|
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impl From<JsNamedNode> for Term { |
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fn from(node: JsNamedNode) -> Self { |
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node.inner.into() |
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} |
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} |
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|
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impl From<JsNamedNode> for GraphName { |
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fn from(node: JsNamedNode) -> Self { |
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node.inner.into() |
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} |
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} |
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|
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#[wasm_bindgen(js_name = BlankNode)] |
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#[derive(Eq, PartialEq, Debug, Clone, Hash)] |
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pub struct JsBlankNode { |
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inner: BlankNode, |
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} |
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|
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#[wasm_bindgen(js_class = BlankNode)] |
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impl JsBlankNode { |
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#[wasm_bindgen(getter = termType)] |
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pub fn term_type(&self) -> String { |
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"BlankNode".to_owned() |
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} |
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|
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#[wasm_bindgen(getter)] |
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pub fn value(&self) -> String { |
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self.inner.as_str().to_owned() |
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} |
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|
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pub fn equals(&self, other: &JsValue) -> bool { |
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if let Ok(Some(JsTerm::BlankNode(other))) = |
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FromJsConverter::default().to_optional_term(other) |
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{ |
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self == &other |
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} else { |
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false |
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} |
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} |
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} |
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|
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impl From<BlankNode> for JsBlankNode { |
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fn from(inner: BlankNode) -> Self { |
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Self { inner } |
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} |
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} |
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|
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impl From<JsBlankNode> for BlankNode { |
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fn from(node: JsBlankNode) -> Self { |
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node.inner |
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} |
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} |
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|
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impl From<JsBlankNode> for NamedOrBlankNode { |
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fn from(node: JsBlankNode) -> Self { |
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node.inner.into() |
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} |
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} |
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|
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impl From<JsBlankNode> for Subject { |
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fn from(node: JsBlankNode) -> Self { |
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node.inner.into() |
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} |
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} |
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|
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impl From<JsBlankNode> for Term { |
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fn from(node: JsBlankNode) -> Self { |
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node.inner.into() |
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} |
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} |
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|
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impl From<JsBlankNode> for GraphName { |
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fn from(node: JsBlankNode) -> Self { |
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node.inner.into() |
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} |
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} |
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|
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#[wasm_bindgen(js_name = Literal)] |
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#[derive(Eq, PartialEq, Debug, Clone, Hash)] |
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pub struct JsLiteral { |
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inner: Literal, |
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} |
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|
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#[wasm_bindgen(js_class = Literal)] |
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impl JsLiteral { |
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#[wasm_bindgen(getter = termType)] |
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pub fn term_type(&self) -> String { |
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"Literal".to_owned() |
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} |
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|
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#[wasm_bindgen(getter)] |
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pub fn value(&self) -> String { |
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self.inner.value().to_owned() |
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} |
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|
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#[wasm_bindgen(getter)] |
||||
pub fn language(&self) -> String { |
||||
self.inner.language().unwrap_or("").to_owned() |
||||
} |
||||
|
||||
#[wasm_bindgen(getter)] |
||||
pub fn datatype(&self) -> JsNamedNode { |
||||
self.inner.datatype().into_owned().into() |
||||
} |
||||
|
||||
pub fn equals(&self, other: &JsValue) -> bool { |
||||
if let Ok(Some(JsTerm::Literal(other))) = FromJsConverter::default().to_optional_term(other) |
||||
{ |
||||
self == &other |
||||
} else { |
||||
false |
||||
} |
||||
} |
||||
} |
||||
|
||||
impl From<Literal> for JsLiteral { |
||||
fn from(inner: Literal) -> Self { |
||||
Self { inner } |
||||
} |
||||
} |
||||
|
||||
impl From<JsLiteral> for Literal { |
||||
fn from(node: JsLiteral) -> Self { |
||||
node.inner |
||||
} |
||||
} |
||||
|
||||
impl From<JsLiteral> for Term { |
||||
fn from(node: JsLiteral) -> Self { |
||||
node.inner.into() |
||||
} |
||||
} |
||||
|
||||
#[wasm_bindgen(js_name = DefaultGraph)] |
||||
#[derive(Eq, PartialEq, Debug, Clone, Hash)] |
||||
pub struct JsDefaultGraph {} |
||||
|
||||
#[wasm_bindgen(js_class = DefaultGraph)] |
||||
impl JsDefaultGraph { |
||||
#[wasm_bindgen(getter = termType)] |
||||
pub fn term_type(&self) -> String { |
||||
"DefaultGraph".to_owned() |
||||
} |
||||
|
||||
#[wasm_bindgen(getter)] |
||||
pub fn value(&self) -> String { |
||||
"".to_owned() |
||||
} |
||||
|
||||
pub fn equals(&self, other: &JsValue) -> bool { |
||||
if let Ok(Some(JsTerm::DefaultGraph(other))) = |
||||
FromJsConverter::default().to_optional_term(other) |
||||
{ |
||||
self == &other |
||||
} else { |
||||
false |
||||
} |
||||
} |
||||
} |
||||
|
||||
#[derive(Eq, PartialEq, Debug, Clone, Hash)] |
||||
pub enum JsTerm { |
||||
NamedNode(JsNamedNode), |
||||
BlankNode(JsBlankNode), |
||||
Literal(JsLiteral), |
||||
DefaultGraph(JsDefaultGraph), |
||||
} |
||||
|
||||
impl From<JsTerm> for JsValue { |
||||
fn from(value: JsTerm) -> Self { |
||||
match value { |
||||
JsTerm::NamedNode(v) => v.into(), |
||||
JsTerm::BlankNode(v) => v.into(), |
||||
JsTerm::Literal(v) => v.into(), |
||||
JsTerm::DefaultGraph(v) => v.into(), |
||||
} |
||||
} |
||||
} |
||||
|
||||
impl From<NamedNode> for JsTerm { |
||||
fn from(node: NamedNode) -> Self { |
||||
JsTerm::NamedNode(node.into()) |
||||
} |
||||
} |
||||
|
||||
impl From<BlankNode> for JsTerm { |
||||
fn from(node: BlankNode) -> Self { |
||||
JsTerm::BlankNode(node.into()) |
||||
} |
||||
} |
||||
|
||||
impl From<Literal> for JsTerm { |
||||
fn from(literal: Literal) -> Self { |
||||
JsTerm::Literal(literal.into()) |
||||
} |
||||
} |
||||
|
||||
impl From<NamedOrBlankNode> for JsTerm { |
||||
fn from(node: NamedOrBlankNode) -> Self { |
||||
match node { |
||||
NamedOrBlankNode::NamedNode(node) => node.into(), |
||||
NamedOrBlankNode::BlankNode(node) => node.into(), |
||||
} |
||||
} |
||||
} |
||||
|
||||
impl From<Subject> for JsTerm { |
||||
fn from(node: Subject) -> Self { |
||||
match node { |
||||
Subject::NamedNode(node) => node.into(), |
||||
Subject::BlankNode(node) => node.into(), |
||||
Subject::Triple(_) => unimplemented!(), |
||||
} |
||||
} |
||||
} |
||||
|
||||
impl From<Term> for JsTerm { |
||||
fn from(term: Term) -> Self { |
||||
match term { |
||||
Term::NamedNode(node) => node.into(), |
||||
Term::BlankNode(node) => node.into(), |
||||
Term::Literal(literal) => literal.into(), |
||||
Term::Triple(_) => unimplemented!(), |
||||
} |
||||
} |
||||
} |
||||
|
||||
impl From<GraphName> for JsTerm { |
||||
fn from(name: GraphName) -> Self { |
||||
match name { |
||||
GraphName::NamedNode(node) => node.into(), |
||||
GraphName::BlankNode(node) => node.into(), |
||||
GraphName::DefaultGraph => JsTerm::DefaultGraph(JsDefaultGraph {}), |
||||
} |
||||
} |
||||
} |
||||
|
||||
impl TryFrom<JsTerm> for NamedNode { |
||||
type Error = JsValue; |
||||
|
||||
fn try_from(value: JsTerm) -> Result<Self, JsValue> { |
||||
match value { |
||||
JsTerm::NamedNode(node) => Ok(node.into()), |
||||
JsTerm::BlankNode(node) => Err(format_err!( |
||||
"The blank node {} is not a named node", |
||||
node.inner |
||||
)), |
||||
JsTerm::Literal(literal) => Err(format_err!( |
||||
"The literal {} is not a named node", |
||||
literal.inner |
||||
)), |
||||
JsTerm::DefaultGraph(_) => Err(format_err!("The default graph is not a named node")), |
||||
} |
||||
} |
||||
} |
||||
|
||||
impl TryFrom<JsTerm> for NamedOrBlankNode { |
||||
type Error = JsValue; |
||||
|
||||
fn try_from(value: JsTerm) -> Result<Self, JsValue> { |
||||
match value { |
||||
JsTerm::NamedNode(node) => Ok(node.into()), |
||||
JsTerm::BlankNode(node) => Ok(node.into()), |
||||
JsTerm::Literal(literal) => Err(format_err!( |
||||
"The literal {} is not a possible named or blank node term", |
||||
literal.inner |
||||
)), |
||||
JsTerm::DefaultGraph(_) => { |
||||
Err(format_err!("The default graph is not a possible RDF term")) |
||||
} |
||||
} |
||||
} |
||||
} |
||||
|
||||
impl TryFrom<JsTerm> for Subject { |
||||
type Error = JsValue; |
||||
|
||||
fn try_from(value: JsTerm) -> Result<Self, JsValue> { |
||||
match value { |
||||
JsTerm::NamedNode(node) => Ok(node.into()), |
||||
JsTerm::BlankNode(node) => Ok(node.into()), |
||||
JsTerm::Literal(literal) => Err(format_err!( |
||||
"The literal {} is not a possible named or blank node term", |
||||
literal.inner |
||||
)), |
||||
JsTerm::DefaultGraph(_) => { |
||||
Err(format_err!("The default graph is not a possible RDF term")) |
||||
} |
||||
} |
||||
} |
||||
} |
||||
|
||||
impl TryFrom<JsTerm> for Term { |
||||
type Error = JsValue; |
||||
|
||||
fn try_from(value: JsTerm) -> Result<Self, JsValue> { |
||||
match value { |
||||
JsTerm::NamedNode(node) => Ok(node.into()), |
||||
JsTerm::BlankNode(node) => Ok(node.into()), |
||||
JsTerm::Literal(literal) => Ok(literal.into()), |
||||
JsTerm::DefaultGraph(_) => { |
||||
Err(format_err!("The default graph is not a possible RDF term")) |
||||
} |
||||
} |
||||
} |
||||
} |
||||
|
||||
impl TryFrom<JsTerm> for GraphName { |
||||
type Error = JsValue; |
||||
|
||||
fn try_from(value: JsTerm) -> Result<Self, JsValue> { |
||||
match value { |
||||
JsTerm::NamedNode(node) => Ok(node.into()), |
||||
JsTerm::BlankNode(node) => Ok(node.into()), |
||||
JsTerm::Literal(literal) => Err(format_err!( |
||||
"The literal {} is not a possible graph name", |
||||
literal.inner |
||||
)), |
||||
JsTerm::DefaultGraph(_) => Ok(GraphName::DefaultGraph), |
||||
} |
||||
} |
||||
} |
||||
|
||||
#[wasm_bindgen(js_name = Quad)] |
||||
#[derive(Eq, PartialEq, Debug, Clone, Hash)] |
||||
pub struct JsQuad { |
||||
subject: JsTerm, |
||||
predicate: JsTerm, |
||||
object: JsTerm, |
||||
graph_name: JsTerm, |
||||
} |
||||
|
||||
#[wasm_bindgen(js_class = Quad)] |
||||
impl JsQuad { |
||||
#[wasm_bindgen(getter = subject)] |
||||
pub fn subject(&self) -> JsValue { |
||||
self.subject.clone().into() |
||||
} |
||||
|
||||
#[wasm_bindgen(getter = predicate)] |
||||
pub fn predicate(&self) -> JsValue { |
||||
self.predicate.clone().into() |
||||
} |
||||
|
||||
#[wasm_bindgen(getter = object)] |
||||
pub fn object(&self) -> JsValue { |
||||
self.object.clone().into() |
||||
} |
||||
|
||||
#[wasm_bindgen(getter = graph)] |
||||
pub fn graph(&self) -> JsValue { |
||||
self.graph_name.clone().into() |
||||
} |
||||
|
||||
pub fn equals(&self, other: &JsValue) -> bool { |
||||
FromJsConverter::default() |
||||
.to_quad(other) |
||||
.map_or(false, |other| self == &other) |
||||
} |
||||
} |
||||
|
||||
impl From<Quad> for JsQuad { |
||||
fn from(quad: Quad) -> Self { |
||||
Self { |
||||
subject: quad.subject.into(), |
||||
predicate: quad.predicate.into(), |
||||
object: quad.object.into(), |
||||
graph_name: quad.graph_name.into(), |
||||
} |
||||
} |
||||
} |
||||
|
||||
impl TryFrom<JsQuad> for Quad { |
||||
type Error = JsValue; |
||||
|
||||
fn try_from(quad: JsQuad) -> Result<Self, JsValue> { |
||||
Ok(Quad { |
||||
subject: Subject::try_from(quad.subject)?, |
||||
predicate: NamedNode::try_from(quad.predicate)?, |
||||
object: Term::try_from(quad.object)?, |
||||
graph_name: GraphName::try_from(quad.graph_name)?, |
||||
}) |
||||
} |
||||
} |
||||
|
||||
pub struct FromJsConverter { |
||||
term_type: JsValue, |
||||
value: JsValue, |
||||
language: JsValue, |
||||
datatype: JsValue, |
||||
subject: JsValue, |
||||
predicate: JsValue, |
||||
object: JsValue, |
||||
graph: JsValue, |
||||
} |
||||
|
||||
impl Default for FromJsConverter { |
||||
fn default() -> Self { |
||||
Self { |
||||
term_type: JsValue::from_str("termType"), |
||||
value: JsValue::from_str("value"), |
||||
language: JsValue::from_str("language"), |
||||
datatype: JsValue::from_str("datatype"), |
||||
subject: JsValue::from_str("subject"), |
||||
predicate: JsValue::from_str("predicate"), |
||||
object: JsValue::from_str("object"), |
||||
graph: JsValue::from_str("graph"), |
||||
} |
||||
} |
||||
} |
||||
|
||||
impl FromJsConverter { |
||||
pub fn to_term(&self, value: &JsValue) -> Result<JsTerm, JsValue> { |
||||
let term_type = Reflect::get(value, &self.term_type)?; |
||||
if let Some(term_type) = term_type.as_string() { |
||||
match term_type.as_str() { |
||||
"NamedNode" => Ok(NamedNode::new( |
||||
Reflect::get(value, &self.value)? |
||||
.as_string() |
||||
.ok_or_else(|| format_err!("NamedNode should have a string value"))?, |
||||
) |
||||
.map_err(|v| UriError::new(&v.to_string()))? |
||||
.into()), |
||||
"BlankNode" => Ok(BlankNode::new( |
||||
&Reflect::get(value, &self.value)? |
||||
.as_string() |
||||
.ok_or_else(|| format_err!("BlankNode should have a string value"))?, |
||||
) |
||||
.map_err(to_err)? |
||||
.into()), |
||||
"Literal" => { |
||||
if let JsTerm::NamedNode(datatype) = |
||||
self.to_term(&Reflect::get(value, &self.datatype)?)? |
||||
{ |
||||
let datatype = NamedNode::from(datatype); |
||||
let literal_value = Reflect::get(value, &self.value)? |
||||
.as_string() |
||||
.ok_or_else(|| format_err!("Literal should have a string value"))?; |
||||
Ok(match datatype.as_str() { |
||||
"http://www.w3.org/2001/XMLSchema#string" => Literal::new_simple_literal(literal_value), |
||||
"http://www.w3.org/1999/02/22-rdf-syntax-ns#langString" => Literal::new_language_tagged_literal(literal_value, Reflect::get(value, &self.language)?.as_string().ok_or_else( |
||||
|| format_err!("Literal with rdf:langString datatype should have a language"), |
||||
)?).map_err(to_err)?, |
||||
_ => Literal::new_typed_literal(literal_value, datatype) |
||||
}.into()) |
||||
} else { |
||||
Err(format_err!( |
||||
"Literal should have a datatype that is a NamedNode" |
||||
)) |
||||
} |
||||
} |
||||
"DefaultGraph" => Ok(JsTerm::DefaultGraph(JsDefaultGraph {})), |
||||
_ => Err(format_err!( |
||||
"The termType {} is not supported by Oxigraph", |
||||
term_type |
||||
)), |
||||
} |
||||
} else { |
||||
Err(format_err!("The object termType field should be a string")) |
||||
} |
||||
} |
||||
|
||||
pub fn to_optional_term(&self, value: &JsValue) -> Result<Option<JsTerm>, JsValue> { |
||||
if value.is_null() || value.is_undefined() { |
||||
Ok(None) |
||||
} else { |
||||
self.to_term(value).map(Some) |
||||
} |
||||
} |
||||
|
||||
pub fn to_quad(&self, value: &JsValue) -> Result<JsQuad, JsValue> { |
||||
Ok(JsQuad { |
||||
subject: self.to_term(&Reflect::get(value, &self.subject)?)?, |
||||
predicate: self.to_term(&Reflect::get(value, &self.predicate)?)?, |
||||
object: self.to_term(&Reflect::get(value, &self.object)?)?, |
||||
graph_name: self.to_term(&Reflect::get(value, &self.graph)?)?, |
||||
}) |
||||
} |
||||
} |
||||
@ -0,0 +1,230 @@ |
||||
use crate::format_err; |
||||
use crate::model::*; |
||||
use crate::utils::to_err; |
||||
use js_sys::{Array, Map}; |
||||
use oxigraph::io::{DatasetFormat, GraphFormat}; |
||||
use oxigraph::model::*; |
||||
use oxigraph::sparql::QueryResults; |
||||
use oxigraph::store::Store; |
||||
use std::convert::{TryFrom, TryInto}; |
||||
use std::io::Cursor; |
||||
use wasm_bindgen::prelude::*; |
||||
|
||||
#[wasm_bindgen(js_name = Store)] |
||||
pub struct JsStore { |
||||
store: Store, |
||||
from_js: FromJsConverter, |
||||
} |
||||
|
||||
#[wasm_bindgen(js_class = Store)] |
||||
impl JsStore { |
||||
#[wasm_bindgen(constructor)] |
||||
pub fn new(quads: Option<Box<[JsValue]>>) -> Result<JsStore, JsValue> { |
||||
console_error_panic_hook::set_once(); |
||||
|
||||
let store = Self { |
||||
store: Store::new().map_err(to_err)?, |
||||
from_js: FromJsConverter::default(), |
||||
}; |
||||
if let Some(quads) = quads { |
||||
for quad in quads.iter() { |
||||
store.add(quad)?; |
||||
} |
||||
} |
||||
Ok(store) |
||||
} |
||||
|
||||
#[wasm_bindgen(js_name = dataFactory, getter)] |
||||
pub fn data_factory(&self) -> JsDataFactory { |
||||
JsDataFactory::default() |
||||
} |
||||
|
||||
pub fn add(&self, quad: &JsValue) -> Result<(), JsValue> { |
||||
self.store |
||||
.insert(&self.from_js.to_quad(quad)?.try_into()?) |
||||
.map_err(to_err)?; |
||||
Ok(()) |
||||
} |
||||
|
||||
pub fn delete(&self, quad: &JsValue) -> Result<(), JsValue> { |
||||
self.store |
||||
.remove(&self.from_js.to_quad(quad)?.try_into()?) |
||||
.map_err(to_err)?; |
||||
Ok(()) |
||||
} |
||||
|
||||
pub fn has(&self, quad: &JsValue) -> Result<bool, JsValue> { |
||||
self.store |
||||
.contains(&self.from_js.to_quad(quad)?.try_into()?) |
||||
.map_err(to_err) |
||||
} |
||||
|
||||
#[wasm_bindgen(getter=size)] |
||||
pub fn size(&self) -> usize { |
||||
self.store.len() |
||||
} |
||||
|
||||
#[wasm_bindgen(js_name = match)] |
||||
pub fn match_quads( |
||||
&self, |
||||
subject: &JsValue, |
||||
predicate: &JsValue, |
||||
object: &JsValue, |
||||
graph_name: &JsValue, |
||||
) -> Result<Box<[JsValue]>, JsValue> { |
||||
Ok(self |
||||
.store |
||||
.quads_for_pattern( |
||||
if let Some(subject) = self.from_js.to_optional_term(subject)? { |
||||
Some(subject.try_into()?) |
||||
} else { |
||||
None |
||||
} |
||||
.as_ref() |
||||
.map(|t: &NamedOrBlankNode| t.into()), |
||||
if let Some(predicate) = self.from_js.to_optional_term(predicate)? { |
||||
Some(NamedNode::try_from(predicate)?) |
||||
} else { |
||||
None |
||||
} |
||||
.as_ref() |
||||
.map(|t: &NamedNode| t.into()), |
||||
if let Some(object) = self.from_js.to_optional_term(object)? { |
||||
Some(object.try_into()?) |
||||
} else { |
||||
None |
||||
} |
||||
.as_ref() |
||||
.map(|t: &Term| t.into()), |
||||
if let Some(graph_name) = self.from_js.to_optional_term(graph_name)? { |
||||
Some(graph_name.try_into()?) |
||||
} else { |
||||
None |
||||
} |
||||
.as_ref() |
||||
.map(|t: &GraphName| t.into()), |
||||
) |
||||
.map(|v| v.map(|v| JsQuad::from(v).into())) |
||||
.collect::<Result<Vec<_>, _>>() |
||||
.map_err(to_err)? |
||||
.into_boxed_slice()) |
||||
} |
||||
|
||||
pub fn query(&self, query: &str) -> Result<JsValue, JsValue> { |
||||
let results = self.store.query(query).map_err(to_err)?; |
||||
let output = match results { |
||||
QueryResults::Solutions(solutions) => { |
||||
let results = Array::new(); |
||||
for solution in solutions { |
||||
let solution = solution.map_err(to_err)?; |
||||
let result = Map::new(); |
||||
for (variable, value) in solution.iter() { |
||||
result.set( |
||||
&variable.as_str().into(), |
||||
&JsTerm::from(value.clone()).into(), |
||||
); |
||||
} |
||||
results.push(&result.into()); |
||||
} |
||||
results.into() |
||||
} |
||||
QueryResults::Graph(quads) => { |
||||
let results = Array::new(); |
||||
for quad in quads { |
||||
results.push( |
||||
&JsQuad::from(quad.map_err(to_err)?.in_graph(GraphName::DefaultGraph)) |
||||
.into(), |
||||
); |
||||
} |
||||
results.into() |
||||
} |
||||
QueryResults::Boolean(b) => b.into(), |
||||
}; |
||||
Ok(output) |
||||
} |
||||
|
||||
pub fn update(&self, update: &str) -> Result<(), JsValue> { |
||||
self.store.update(update).map_err(to_err) |
||||
} |
||||
|
||||
pub fn load( |
||||
&self, |
||||
data: &str, |
||||
mime_type: &str, |
||||
base_iri: &JsValue, |
||||
to_graph_name: &JsValue, |
||||
) -> Result<(), JsValue> { |
||||
let base_iri = if base_iri.is_null() || base_iri.is_undefined() { |
||||
None |
||||
} else if base_iri.is_string() { |
||||
base_iri.as_string() |
||||
} else if let JsTerm::NamedNode(base_iri) = self.from_js.to_term(base_iri)? { |
||||
Some(base_iri.value()) |
||||
} else { |
||||
return Err(format_err!( |
||||
"If provided, the base IRI should be a NamedNode or a string" |
||||
)); |
||||
}; |
||||
|
||||
let to_graph_name = |
||||
if let Some(graph_name) = self.from_js.to_optional_term(to_graph_name)? { |
||||
Some(graph_name.try_into()?) |
||||
} else { |
||||
None |
||||
}; |
||||
|
||||
if let Some(graph_format) = GraphFormat::from_media_type(mime_type) { |
||||
self.store |
||||
.load_graph( |
||||
Cursor::new(data), |
||||
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(Cursor::new(data), dataset_format, base_iri.as_deref()) |
||||
.map_err(to_err) |
||||
} else { |
||||
Err(format_err!("Not supported MIME type: {}", mime_type)) |
||||
} |
||||
} |
||||
|
||||
pub fn dump(&self, mime_type: &str, from_graph_name: &JsValue) -> Result<String, JsValue> { |
||||
let from_graph_name = |
||||
if let Some(graph_name) = self.from_js.to_optional_term(from_graph_name)? { |
||||
Some(graph_name.try_into()?) |
||||
} else { |
||||
None |
||||
}; |
||||
|
||||
let mut buffer = Vec::new(); |
||||
if let Some(graph_format) = GraphFormat::from_media_type(mime_type) { |
||||
self.store |
||||
.dump_graph( |
||||
&mut buffer, |
||||
graph_format, |
||||
&from_graph_name.unwrap_or(GraphName::DefaultGraph), |
||||
) |
||||
.map_err(to_err)?; |
||||
} else if let Some(dataset_format) = DatasetFormat::from_media_type(mime_type) { |
||||
if from_graph_name.is_some() { |
||||
return Err(format_err!( |
||||
"The target graph name parameter is not available for dataset formats" |
||||
)); |
||||
} |
||||
self.store |
||||
.dump_dataset(&mut buffer, dataset_format) |
||||
.map_err(to_err)?; |
||||
} else { |
||||
return Err(format_err!("Not supported MIME type: {}", mime_type)); |
||||
} |
||||
String::from_utf8(buffer).map_err(to_err) |
||||
} |
||||
} |
||||
@ -0,0 +1,16 @@ |
||||
use js_sys::Error; |
||||
use wasm_bindgen::JsValue; |
||||
|
||||
#[macro_export] |
||||
macro_rules! format_err { |
||||
($msg:literal $(,)?) => { |
||||
::wasm_bindgen::JsValue::from(::js_sys::Error::new($msg)) |
||||
}; |
||||
($fmt:literal, $($arg:tt)*) => { |
||||
::wasm_bindgen::JsValue::from(::js_sys::Error::new(&format!($fmt, $($arg)*))) |
||||
}; |
||||
} |
||||
|
||||
pub fn to_err(e: impl ToString) -> JsValue { |
||||
JsValue::from(Error::new(&e.to_string())) |
||||
} |
||||
@ -0,0 +1,2 @@ |
||||
const { Store } = require('../pkg/oxigraph.js') |
||||
require('../node_modules/@rdfjs/data-model/test/index.js')((new Store()).dataFactory) |
||||
@ -0,0 +1,156 @@ |
||||
/* global describe, it */ |
||||
|
||||
const { Store } = require('../pkg/oxigraph.js') |
||||
const assert = require('assert') |
||||
const dataFactory = require('@rdfjs/data-model') |
||||
|
||||
const ex = dataFactory.namedNode('http://example.com') |
||||
|
||||
describe('Store', function () { |
||||
describe('#add()', function () { |
||||
it('an added quad should be in the store', function () { |
||||
const store = new Store() |
||||
store.add(dataFactory.triple(ex, ex, ex)) |
||||
assert(store.has(dataFactory.triple(ex, ex, ex))) |
||||
}) |
||||
}) |
||||
|
||||
describe('#delete()', function () { |
||||
it('an removed quad should not be in the store anymore', function () { |
||||
const store = new Store([dataFactory.triple(ex, ex, ex)]) |
||||
assert(store.has(dataFactory.triple(ex, ex, ex))) |
||||
store.delete(dataFactory.triple(ex, ex, ex)) |
||||
assert(!store.has(dataFactory.triple(ex, ex, ex))) |
||||
}) |
||||
}) |
||||
|
||||
describe('#has()', function () { |
||||
it('an added quad should be in the store', function () { |
||||
const store = new Store([dataFactory.triple(ex, ex, ex)]) |
||||
assert(store.has(dataFactory.triple(ex, ex, ex))) |
||||
}) |
||||
}) |
||||
|
||||
describe('#size()', function () { |
||||
it('A store with one quad should have 1 for size', function () { |
||||
const store = new Store([dataFactory.triple(ex, ex, ex)]) |
||||
assert.strictEqual(1, store.size) |
||||
}) |
||||
}) |
||||
|
||||
describe('#match_quads()', function () { |
||||
it('blank pattern should return all quads', function () { |
||||
const store = new Store([dataFactory.triple(ex, ex, ex)]) |
||||
const results = store.match() |
||||
assert.strictEqual(1, results.length) |
||||
assert(dataFactory.triple(ex, ex, ex).equals(results[0])) |
||||
}) |
||||
}) |
||||
|
||||
describe('#query()', function () { |
||||
it('ASK true', function () { |
||||
const store = new Store([dataFactory.triple(ex, ex, ex)]) |
||||
assert.strictEqual(true, store.query('ASK { ?s ?s ?s }')) |
||||
}) |
||||
|
||||
it('ASK false', function () { |
||||
const store = new Store() |
||||
assert.strictEqual(false, store.query('ASK { FILTER(false)}')) |
||||
}) |
||||
|
||||
it('CONSTRUCT', function () { |
||||
const store = new Store([dataFactory.triple(ex, ex, ex)]) |
||||
const results = store.query('CONSTRUCT { ?s ?p ?o } WHERE { ?s ?p ?o }') |
||||
assert.strictEqual(1, results.length) |
||||
assert(dataFactory.triple(ex, ex, ex).equals(results[0])) |
||||
}) |
||||
|
||||
it('SELECT', function () { |
||||
const store = new Store([dataFactory.triple(ex, ex, ex)]) |
||||
const results = store.query('SELECT ?s WHERE { ?s ?p ?o }') |
||||
assert.strictEqual(1, results.length) |
||||
assert(ex.equals(results[0].get('s'))) |
||||
}) |
||||
|
||||
it('SELECT with NOW()', function () { |
||||
const store = new Store([dataFactory.triple(ex, ex, ex)]) |
||||
const results = store.query('SELECT (YEAR(NOW()) AS ?y) WHERE {}') |
||||
assert.strictEqual(1, results.length) |
||||
}) |
||||
|
||||
it('SELECT with RAND()', function () { |
||||
const store = new Store([dataFactory.triple(ex, ex, ex)]) |
||||
const results = store.query('SELECT (RAND() AS ?y) WHERE {}') |
||||
assert.strictEqual(1, results.length) |
||||
}) |
||||
}) |
||||
|
||||
describe('#update()', function () { |
||||
it('INSERT DATA', function () { |
||||
const store = new Store() |
||||
store.update('INSERT DATA { <http://example.com> <http://example.com> <http://example.com> }') |
||||
assert.strictEqual(1, store.size) |
||||
}) |
||||
|
||||
it('DELETE DATA', function () { |
||||
const store = new Store([dataFactory.triple(ex, ex, ex)]) |
||||
store.update('DELETE DATA { <http://example.com> <http://example.com> <http://example.com> }') |
||||
assert.strictEqual(0, store.size) |
||||
}) |
||||
|
||||
it('DELETE WHERE', function () { |
||||
const store = new Store([dataFactory.triple(ex, ex, ex)]) |
||||
store.update('DELETE WHERE { ?v ?v ?v }') |
||||
assert.strictEqual(0, store.size) |
||||
}) |
||||
}) |
||||
|
||||
describe('#load()', function () { |
||||
it('load NTriples in the default graph', function () { |
||||
const store = new Store() |
||||
store.load('<http://example.com> <http://example.com> <http://example.com> .', 'application/n-triples') |
||||
assert(store.has(dataFactory.triple(ex, ex, ex))) |
||||
}) |
||||
|
||||
it('load NTriples in an other graph', function () { |
||||
const store = new Store() |
||||
store.load('<http://example.com> <http://example.com> <http://example.com> .', 'application/n-triples', null, ex) |
||||
assert(store.has(dataFactory.quad(ex, ex, ex, ex))) |
||||
}) |
||||
|
||||
it('load Turtle with a base IRI', function () { |
||||
const store = new Store() |
||||
store.load('<http://example.com> <http://example.com> <> .', 'text/turtle', 'http://example.com') |
||||
assert(store.has(dataFactory.triple(ex, ex, ex))) |
||||
}) |
||||
|
||||
it('load NQuads', function () { |
||||
const store = new Store() |
||||
store.load('<http://example.com> <http://example.com> <http://example.com> <http://example.com> .', 'application/n-quads') |
||||
assert(store.has(dataFactory.quad(ex, ex, ex, ex))) |
||||
}) |
||||
|
||||
it('load TriG with a base IRI', function () { |
||||
const store = new Store() |
||||
store.load('GRAPH <> { <http://example.com> <http://example.com> <> }', 'application/trig', 'http://example.com') |
||||
assert(store.has(dataFactory.quad(ex, ex, ex, ex))) |
||||
}) |
||||
}) |
||||
|
||||
describe('#dump()', function () { |
||||
it('dump dataset content', function () { |
||||
const store = new Store([dataFactory.quad(ex, ex, ex, ex)]) |
||||
assert.strictEqual('<http://example.com> <http://example.com> <http://example.com> <http://example.com> .\n', store.dump('application/n-quads')) |
||||
}) |
||||
|
||||
it('dump named graph content', function () { |
||||
const store = new Store([dataFactory.quad(ex, ex, ex, ex)]) |
||||
assert.strictEqual('<http://example.com> <http://example.com> <http://example.com> .\n', store.dump('application/n-triples', ex)) |
||||
}) |
||||
|
||||
it('dump default graph content', function () { |
||||
const store = new Store([dataFactory.quad(ex, ex, ex, ex)]) |
||||
assert.strictEqual('', store.dump('application/n-triples')) |
||||
}) |
||||
}) |
||||
}) |
||||
Loading…
Reference in new issue