//! SPARQL algebra evaluation

/// SPARQL algebra operators
///
/// TODO: Implement algebra evaluation
/// - BGP (Basic Graph Pattern) matching
/// - FILTER evaluation
/// - OPTIONAL, UNION operators
/// - Property paths
/// - Aggregation

#[cfg(test)]
mod tests {
    #[test]
    fn test_placeholder() {
        // TODO: Add tests once implemented
    }
}
