zig-knowledge-graph

Knowledge Graph server + CLI for Trinity. Zig implementation of RDF storage and SPARQL query engine.

Extracted from Trinity monolith for independent development and reuse.

Features

• RDF Storage — Triple-based knowledge representation (subject-predicate-object)
• SPARQL Query Engine — Pattern matching, joins, filters
• HTTP Server — REST API for KG operations
• CLI — Command-line interface for management

Quick Start

# Build
zig build

# Run server
zig-out/bin/kg-server

# Query from CLI
./zig-out/bin/kg-cli "SELECT ?s ?p ?o WHERE { ?s ?p ?o }"

Architecture

┌─────────────────────────────────────────┐
│         Knowledge Graph Core            │
├─────────────────────────────────────────┤
│  knowledge_graph.zig  (26KB)            │
│  - RDF triples storage                  │
│  - Index management                     │
│  - Pattern matching                     │
├─────────────────────────────────────────┤
│  kg_server.zig  (57KB)                  │
│  - HTTP API                             │
│  - Query processing                     │
│  - Transaction management               │
├─────────────────────────────────────────┤
│  kg_cli.zig  (19KB)                     │
│  - Interactive shell                    │
│  - Batch queries                        │
│  - Import/export                        │
└─────────────────────────────────────────┘

Dependencies

• zig-golden-float — Numerical kernel

License

MIT License — see LICENSE file.

Related

• Trinity — Main framework
• zig-golden-float — Numerical kernel