Fork of https://github.com/oxigraph/oxigraph.git for the purpose of NextGraph project
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oxigraph/CHANGELOG.md

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## [0.3.0-beta.3] - 2022-02-02
### Changed
- Fixes a bug in the `bulk_load_dataset` method that was creating an invalid database.
- Server: Takes into account also URL query parameters if the send SPARQL request body is using form-urlencoded.
- Upgrades RocksDB to v0.28.2.
- Generate clean python sdist files compiling Oxigraph from scratch with the proper `Cargo.lock`.
- Do not push beta releases to homebrew and python stable documentation.
- Moves RocksDB binding directory to `oxrocksdb-sys`.
## [0.3.0-beta.2] - 2022-01-29
### Changed
- Fixes release on crates.io of the RocksDB bindings.
## [0.3.0-beta.1] - 2022-01-29
### Added
- [RDF-star](https://w3c.github.io/rdf-star/cg-spec) support. `Triple` is now a possible `Term`. Serialization formats and SPARQL support have been updated to match the [latest version of the specification draft](https://w3c.github.io/rdf-star/cg-spec/2021-07-01.html).
- Fast data bulk load with the `Store` `bulk_load_dataset` and `bulk_load_graph` methods and a special command line option of the server.
- It is now possible to quickly backup the database using the `backup` method.
- Rust: `*Syntax::from_extension` to easy guess a graph/dataset/sparql result format from a file extension.
- Rust: Custom SPARQL functions are now supported using `QueryOptions::with_custom_function`.
- Rust: Simple in-memory graph (`Graph`) and dataset (`Dataset`) data structures with canonicalization.
- Nightly build of the server binary and docker image, and of pyoxigraph wheels.
- `Store` operations are now transactional using the "repeatable read" isolation level:
the store only exposes changes that have been "committed" (i.e. no partial writes) and the exposed state does not change for the complete duration of a read operation (e.g. a SPARQL query) or a read/write operation (e.g. a SPARQL update).
the `Store` `transaction` method now allows to do read/write transactions.
-`RDF-star <https://w3c.github.io/rdf-star/cg-spec>`_ is now supported (including serialization formats and SPARQL-star). :py:class:`.Triple` can now be used in :py:attr:`.Triple.object`, :py:attr:`.Triple.object`, :py:attr:`.Quad.subject` and :py:attr:`.Quad.object`.
### Changed
- SPARQL: It is now possible to compare `rdf:langString` literals with the same language tag.
- SPARQL: The parser now validates more carefully the inputs following the SPARQL specification and test suite.
- SPARQL: Variable scoping was buggy with "FILTER EXISTS". It is now fixed.
- Rust: RDF model, SPARQL parser and SPARQL result parsers have been moved to stand-alone reusable libraries.
- Rust: HTTPS is not supported by default with the `http_client` option. You need to enable the `native-tls` or the `rustls` feature of the `oxhttp` crate to enable a TSL layer.
- Rust: The error types have been cleaned.
Most of the `Store` methods now return a `StorageError` that is more descriptive than the previous `std::io::Error`.
The new error type all implements `Into<std::io::Error>` for easy conversion.
- Rust: There is now a `Subject` struct that is the union of `NamedNode`, `BlankNode` and `Triple`.
It is The used type of the `subject` field of the `Triple` and `Quad` structs.
- Rust: The SPARQL algebra is not anymore publicly exposed in the `oxigraph` crate. The new `oxalgebra` crate exposes it.
- Rust: `UpdateOptions` API have been rewritten. It can now be built using `From<QueryOptions>` or `Default`.
- Server: The command line API has been redesign. See the [server README](server/README.md) for more information.
- Server: The HTTP implementation is now provided by [`oxhttp`](https://github.com/oxigraph/oxhttp).
- Server: The HTTP response bodies are now generated on the fly instead of being buffered.
- Python: The `SledStore` and `MemoryStore` classes have been removed in favor of the `Store` class.
- JS: The `MemoryStore` class has been renamed to `Store`.
- JS: The [RDF/JS `DataFactory` interface](http://rdf.js.org/data-model-spec/#datafactory-interface) is now implemented by the `oxigraph` module itself and the `MemoryStore.dataFactory` propery has been removed.
- The implementation of SPARQL evaluation has been improved for better performances (especially joins).
- The TLS implementation used in SPARQL HTTP calls is now [rustls](https://github.com/rustls/rustls) and not [native-tls](https://github.com/sfackler/rust-native-tls). The host system certificate registry is still used.
- Spargebra: The basic RDF terms are now the ones of the `oxrdf` crate.
### Removed
- `SledStore` and `MemoryStore`. There is only the `RocksDbStore` anymore that is renamed to `Store`.
- `oxigraph_wikibase` is now stored in [its own repository](https://github.com/oxigraph/oxigraph-wikibase).
- Rust: `From` implementations between `oxigraph` terms and `rio_api` terms.
Many thanks to [Thad Guidry](https://github.com/thadguidry), [James Overton](https://github.com/jamesaoverton) and [Jeremiah](https://github.com/jeremiahpslewis) who sponsored the project during the development of this version.
## [0.2.5] - 2021-07-11
### Added
- [SPARQL 1.1 Query Results JSON Format](http://www.w3.org/TR/sparql11-results-json/) parser.
- Python wheels for macOS are now universal2 binaries.
### Changed
- The `Cargo.lock` file is now provided with releases to avoid compilation failures because of changes in dependencies.
- Uses clap instead of argh for the server arguments parsing.
- Upgrades PyO3 to v0.14.
## [0.2.4] - 2021-04-28
### Changed
- The HTTP server allows to query the union of all graphs using the `union-default-graph` query parameter and to use the union graph for update `WHERE` clauses using the `using-union-graph` parameter.
- Exposes Sled flush operation (useful for platforms without auto-flush like Windows or Android).
- Fixes a possible out of bound panic in SPARQL query evaluation.
- Upgrades RocksDB to 6.17.3.
## [0.2.3] - 2021-04-11
### Changed
- Server: Fixes HTTP content negotiation (charset constraints, failure to properly handle `*/*`...).
- Makes Clippy 1.51 happy.
## [0.2.2] - 2021-03-18
### Added
- Support of XML entities to the RDF/XML parser
### Changed
- Serve: Allows unsupported query parameters in HTTP SPARQL requests.
- Fixes WASM compilation bug and optimises WASM release packages.
- Fixes named graph creation inside of a SledStore transaction.
## [0.2.1] - 2021-01-16
### Changed
- Fixes `pyoxigraph` build by enforcing a given `maturin` version.
- Adds code to build Python wheels for MacOS and Windows.
## [0.2.0] - 2021-01-07
### Added
- [SPARQL 1.1 Update](https://www.w3.org/TR/sparql11-update/) support for Rust, Python and JavaScript. All store-like classes now provide an `update` method.
- [SPARQL 1.1 Query Results CSV and TSV Formats](https://www.w3.org/TR/sparql11-results-csv-tsv/) serializers and TSV format parser.
- [SPARQL 1.1 Graph Store HTTP Protocol](https://www.w3.org/TR/sparql11-http-rdf-update/) partial support in `oxigraph_server`. This protocol is accessible under the `/store` path.
- The SPARQL Query and Update algebra is now public.
- The stores are now "graph aware" i.e. it is possible to create and keep empty named graphs.
- A simple built-in HTTP client. In the Rust library, is disabled by default behind the `http_client` feature. It powers SPARQL federation and SPARQL UPDATE `LOAD` operations.
- `std::str::FromStr` implementations to `NamedNode`, `BlankNode`, `Literal`, `Term` and `Variable` allowing to easily parse Turtle/SPARQL serialization of these terms.
- Optional Sled storage for `oxigraph_server`.
### Removed
- The `default_graph_uris` and `named_graph_uris` parameters from `pyoxigraph` `query` methods.
- Python 3.5 support.
- `(Memory|RocksDB|Sled)Store::prepare_query` methods. It is possible to cache SPARQL query parsing using the `Query::parse` function and give the parsed query to the `query` method.
### Changed
- Loading data into `oxigraph_server` is now possible using `/store` and not anymore using `/`.
For example, you should use now `curl -f -X POST -H 'Content-Type:application/n-quads' --data-binary "@MY_FILE.nq" http://localhost:7878/store` to add the N-Quads file MY_FILE.nt to the server dataset.
- Fixes evaluation of `MONTH()` and `DAY()` functions on the `xsd:date` values.
- `Variable::new` now validates the variable name.
- `(Memory|RocksDB|Sled)Store::query` does not have an option parameter anymore. There is now a new `query_opt` method that allows giving options.
- `xsd:boolean` SPARQL function now properly follows XPath specification.
- Fixes SPARQL `DESCRIBE` evaluation.
### Disk data format
The disk data format has been changed between Oxigraph 0.1 (version 0) and Oxigraph 0.2 (version 1). Data is automatically migrated from the version 0 format to the version 1 format when opened with Oxigraph 0.2.
## [0.1.1] - 2020-08-14
### Added
- The `"sophia"` feature implementing the [`sophia_api`](https://docs.rs/sophia_api/) traits on Oxigraph terms and stores.
- Explicit types for quads iterators returned by stores.
### Changed
- `QueryOptions::with_default_graph` now takes an `impl Into<GraphName>` instead of an `impl Into<NamedNode>`.
- `QueryOptions::with_named_graph` now takes an `impl Into<NamedOrBlankNode>` instead of an `impl Into<NamedNode>`.
- `pyoxigraph` `query` methods now takes two new parameters, `default_graph` and `named_graphs`. `default_graph_uris` and `named_graph_uris` parameters are deprecated.
- Fixes a bug in `xsd:gYear` parsing.
## [0.1.0] - 2020-08-09
### Added
- `QueryOptions` now allows settings the query dataset graph URIs (the SPARQL protocol `default-graph-uri` and `named-graph-uri` parameters).
- `pyoxigraph` store `query` methods allows to provide the dataset graph URIs. It also provides an option to use all graph names as the default graph.
- "default graph as union option" now works with FROM NAMED.
- `pyoxigraph` now exposes and documents `Variable`, `QuerySolution`, `QuerySolutions` and `QueryTriples`
## [0.1.0-rc.1] - 2020-08-08
### Added
- `oxigraph` Rust library with SPARQL 1.1 query support and memory, Sled and RocksDB stores.
- `oxigraph_server` standalone SPARQL server.
- `oxigraph_wikibase` standalone SPARQL server loading data from a Wikibase instance.
- `pyoxigraph` Python library based on Oxigraph.
- `oxigraph` NodeJS library based on Oxigraph.