protected MockPreparedStatement raw;
protected DruidPooledPreparedStatement stmt;
protected void setUp() throws Exception {
DruidDataSource dataSource = new DruidDataSource();
MockConnection mockConn = new MockConnection();
DruidConnectionHolder connHolder = new DruidConnectionHolder(dataSource, mockConn);
DruidPooledConnection conn = new DruidPooledConnection(connHolder);
raw = new MockPreparedStatement(null, null);