Fork of https://github.com/oxigraph/oxigraph.git for the purpose of NextGraph project
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52 lines
2.0 KiB
52 lines
2.0 KiB
//! Rudf is a work in progress graph database implementing the [SPARQL](https://www.w3.org/TR/sparql11-overview/) standard.
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//!
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//! Its goal is to provide a compliant, safe and fast graph database.
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//!
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//! It currently provides two `Repository` implementation providing [SPARQL 1.1 query](https://www.w3.org/TR/sparql11-query/) capability:
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//! * `MemoryRepository`: a simple in memory implementation.
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//! * `RocksDbRepository`: a file system implementation based on the [RocksDB](https://rocksdb.org/) key-value store.
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//!
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//! Usage example with the `MemoryRepository`:
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//!
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//! ```
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//! use rudf::model::*;
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//! use rudf::{Repository, RepositoryConnection, MemoryRepository, Result};
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//! use crate::rudf::sparql::PreparedQuery;
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//! use rudf::sparql::QueryResult;
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//!
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//! let repository = MemoryRepository::default();
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//! let mut connection = repository.connection().unwrap();
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//!
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//! // insertion
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//! let ex = NamedNode::parse("http://example.com").unwrap();
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//! let quad = Quad::new(ex.clone(), ex.clone(), ex.clone(), None);
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//! connection.insert(&quad);
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//!
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//! // quad filter
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//! let results: Result<Vec<Quad>> = connection.quads_for_pattern(None, None, None, None).collect();
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//! assert_eq!(vec![quad], results.unwrap());
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//!
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//! // SPARQL query
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//! let prepared_query = connection.prepare_query("SELECT ?s WHERE { ?s ?p ?o }", None).unwrap();
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//! let results = prepared_query.exec().unwrap();
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//! if let QueryResult::Bindings(results) = results {
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//! assert_eq!(results.into_values_iter().next().unwrap().unwrap()[0], Some(ex.into()));
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//! }
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//! ```
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pub mod model;
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mod repository;
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pub mod sparql;
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pub(crate) mod store;
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mod syntax;
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pub use failure::Error;
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pub type Result<T> = ::std::result::Result<T, failure::Error>;
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pub use crate::repository::Repository;
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pub use crate::repository::RepositoryConnection;
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pub use crate::store::MemoryRepository;
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#[cfg(feature = "rocksdb")]
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pub use crate::store::RocksDbRepository;
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pub use crate::syntax::DatasetSyntax;
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pub use crate::syntax::FileSyntax;
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pub use crate::syntax::GraphSyntax;
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