Function main

examples/python/bindings/basic_usage.py:13–104

()

def main():
    print("=== GraphLite Python Bindings Example ===\n")

    # Use temporary directory for demo
    temp_dir = tempfile.mkdtemp(prefix="graphlite_python_")
    print(f"Using temporary database: {temp_dir}\n")

    try:
        # 1. Open database
        print("1. Opening database...")
        db = GraphLite(temp_dir)
        print(f"   ✓ GraphLite version: {GraphLite.version()}\n")

        # 2. Create session
        print("2. Creating session...")
        session = db.create_session("admin")
        print(f"   ✓ Session created: {session[:20]}...\n")

        # 3. Create schema and graph
        print("3. Setting up schema and graph...")
        db.execute(session, "CREATE SCHEMA IF NOT EXISTS example")
        db.execute(session, "SESSION SET SCHEMA example")
        db.execute(session, "CREATE GRAPH IF NOT EXISTS social")
        db.execute(session, "SESSION SET GRAPH social")
        print("   ✓ Schema and graph created\n")

        # 4. Insert data
        print("4. Inserting data...")
        db.execute(session, "CREATE (p:Person {name: 'Alice', age: 30})")
        db.execute(session, "CREATE (p:Person {name: 'Bob', age: 25})")
        db.execute(session, "CREATE (p:Person {name: 'Charlie', age: 35})")
        print("   ✓ Inserted 3 persons\n")

        # 5. Query data
        print("5. Querying data...")
        result = db.query(session, "MATCH (p:Person) RETURN p.name as name, p.age as age")
        print(f"   Found {result.row_count} persons:")
        for row in result.rows:
            print(f"   - {row['name']}: {row['age']} years old")
        print()

        # 6. Filter with WHERE
        print("6. Filtering with WHERE clause...")
        result = db.query(
            session,
            "MATCH (p:Person) WHERE p.age > 25 RETURN p.name as name, p.age as age ORDER BY p.age DESC"
        )
        print(f"   Found {result.row_count} persons over 25:")
        for row in result.rows:
            print(f"   - {row['name']}: {row['age']} years old")
        print()

        # 7. Aggregation
        print("7. Aggregation query...")
        result = db.query(session, "MATCH (p:Person) RETURN count(p) as total, avg(p.age) as avg_age")
        if result.rows:
            row = result.first()
            print(f"   Total persons: {row['total']}")