Function main

sdk-rust/examples/basic_usage.rs:23–115

()

}

fn main() -> Result<(), Error> {
    println!("=== GraphLite SDK Basic Usage Example ===\n");

    // 1. Open a database
    println!("1. Opening database...");
    let db_path = "/tmp/graphlite_sdk_example";
    let db = GraphLite::open(db_path)?;
    println!("   ✓ Database opened at {}\n", db_path);

    // 2. Create a session
    println!("2. Creating session...");
    let session = db.session("admin")?;
    println!("   ✓ Session created for user 'admin'\n");

    // 3. Execute DDL statements
    println!("3. Creating schema and graph...");
    session.execute("CREATE SCHEMA IF NOT EXISTS example")?;
    session.execute("USE SCHEMA example")?;
    session.execute("CREATE GRAPH IF NOT EXISTS social")?;
    session.execute("USE GRAPH social")?;
    println!("   ✓ Schema and graph created\n");

    // 4. Insert data using transactions
    println!("4. Inserting data with transaction...");
    {
        let mut tx = session.transaction()?;
        tx.execute("CREATE (p:Person {name: 'Alice', age: 30})")?;
        tx.execute("CREATE (p:Person {name: 'Bob', age: 25})")?;
        tx.execute("CREATE (p:Person {name: 'Charlie', age: 35})")?;
        tx.commit()?;
        println!("   ✓ Inserted 3 persons\n");
    }

    // 5. Query data directly
    println!("5. Querying data...");
    let result = session.query("MATCH (p:Person) RETURN p.name as name, p.age as age")?;
    println!("   Found {} persons:", result.rows.len());
    for row in &result.rows {
        if let (Some(name), Some(age)) = (row.get_value("name"), row.get_value("age")) {
            println!("   - Name: {:?}, Age: {:?}", name, age);
        }
    }
    println!();

    // 6. Use query builder
    println!("6. Using query builder...");
    let result = session
        .query_builder()
        .match_pattern("(p:Person)")
        .where_clause("p.age > 25")
        .return_clause("p.name as name, p.age as age")
        .order_by("p.age DESC")
        .execute()?;
    println!("   Found {} persons over 25:", result.rows.len());
    for row in &result.rows {
        if let (Some(name), Some(age)) = (row.get_value("name"), row.get_value("age")) {
            println!("   - Name: {:?}, Age: {:?}", name, age);
        }