Accessing Hive Data Sources Using HSFabric

This section describes how to use HSFabric to connect to HetuServer, assemble SQL statements, and send the SQL statements to HetuServer for execution to add, delete, modify, and query Hive data sources.

public class JDBCExampleFabric {
    private static Properties properties = new Properties();
    private static void init() throws ClassNotFoundException {
        properties.setProperty("user", "YourUserName");
        properties.setProperty("SSL", "false");
        Class.forName("io.XXX.jdbc.XXXDriver");
    }
    /**
     * Program entry
     *
     * @param args no need program parameter
     */
    public static void main(String[] args) {
        Connection connection = null;
        ResultSet result = null;
        PreparedStatement statement = null;
        String url = "jdbc:XXX://192.168.1.130:29903,192.168.1.131:29903/hive/default?serviceDiscoveryMode=hsfabric";
        try {
            init();
            String sql = "show tables";
            connection = DriverManager.getConnection(url, properties);
            statement = connection.prepareStatement(sql.trim());
            result = statement.executeQuery();
            ResultSetMetaData resultMetaData = result.getMetaData();
            Integer colNum = resultMetaData.getColumnCount();
            for (int j = 1; j <= colNum; j++) {
                System.out.print(resultMetaData.getColumnLabel(j) + "\t");
            }
            System.out.println();
            while (result.next()) {
                for (int j = 1; j <= colNum; j++) {
                    System.out.print(result.getString(j) + "\t");
                }
                System.out.println();
            }
        } catch (SQLException | ClassNotFoundException e) {
            e.printStackTrace();
        } finally {
            if (result != null) {
                try {
                    result.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
            if (statement != null) {
                try {
                    statement.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
            if (connection != null) {
                try {
                    connection.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}