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A JDBC-Compliant driver for the DuckDB data management system

There is a newer version: 1.1.3

package org.duckdb;

import java.sql.SQLException;

final class JdbcUtils {

    @SuppressWarnings("unchecked")
    static  T unwrap(Object obj, Class iface) throws SQLException {
        if (!iface.isInstance(obj)) {
            throw new SQLException(obj.getClass().getName() + " not unwrappable from " + iface.getName());
        }
        return (T) obj;
    }

    private JdbcUtils() {
    }
}