grafeo 0.1.4

A pure-Rust, high-performance, embeddable graph database supporting both Labeled Property Graph (LPG) and RDF data models.

Features

• Dual data model support: LPG and RDF with optimized storage for each
• Multi-language queries: GQL, Cypher, Gremlin, GraphQL, and SPARQL (all enabled by default)
• Embeddable with zero external dependencies
• Python bindings via PyO3
• In-memory and persistent storage modes
• MVCC transactions with snapshot isolation

Query Language & Data Model Support

Grafeo uses a modular translator architecture where query languages are parsed into ASTs, then translated to a unified logical plan that executes against the appropriate storage backend (LPG or RDF).

Data Models

• LPG (Labeled Property Graph): Nodes with labels and properties, edges with types and properties. Ideal for social networks, knowledge graphs, and application data.
• RDF (Resource Description Framework): Triple-based storage (subject-predicate-object) with SPO/POS/OSP indexes. Ideal for semantic web, linked data, and ontology-based applications.

Installation

cargo add grafeo

All query languages are enabled by default. For a minimal build with specific languages:

cargo add grafeo --no-default-features --features gql  # GQL only

Quick Start

use grafeo::GrafeoDB;

fn main() -> Result<(), grafeo_common::utils::error::Error> {
    let db = GrafeoDB::new_in_memory();
    let mut session = db.session();

    // Create nodes
    session.execute("INSERT (:Person {name: 'Alice', age: 30})")?;
    session.execute("INSERT (:Person {name: 'Bob', age: 25})")?;

    // Query
    let result = session.execute("MATCH (p:Person) RETURN p.name, p.age")?;
    for row in result.rows {
        println!("{:?}", row);
    }

    Ok(())
}

License

Apache-2.0