创建configuration时，发现URLParser找不到，于是只能使用配置文件来，当然使用配置文件比使用URL初始化还要直观些

def configurationWithPassword = new Configuration(
  host = "localhost",
  port = 3306,
  username = "root",
  password = Some("123"),
  database = Some("test")
)

Configuration文件本身是case class，它的code是

case class Configuration(username: String,
                         host: String = "localhost",
                         port: Int = 5432,
                         password: Option[String] = None,
                         database: Option[String] = None,
                         charset: Charset = Configuration.DefaultCharset,
                         maximumMessageSize: Int = 16777216,
                         allocator: AbstractByteBufAllocator = PooledByteBufAllocator.DEFAULT,
                         connectTimeout: Duration = 5.seconds,
                         testTimeout: Duration = 5.seconds
                          )

这让我想到了slick，slick我连配置文件都搞不出来。总觉得slick的设计有些反人类。

对于单连接

  def sinConnection: MySQLConnection = {

    val configuration: Configuration = configurationWithPassword

    new MySQLConnection(configuration)

  }

对于线程池连接

def poolConnection: ConnectionPool[MySQLConnection] = {
  val configuration: Configuration = configurationPool
  val factory = new MySQLConnectionFactory(configuration)
  val pool    = new ConnectionPool[MySQLConnection](factory, PoolConfiguration.Default)
  pool
}

ResultSet并不是java.sql.resultSet而是作者自己创建的新类型

trait ResultSet extends IndexSeq[RowData]

而rowData则表示一行数据，也是一个顺序表

trait RowData extends IndexedSeq[Any]

这样，ResultSet就像是个二维表了