APACHE HIVE UDF的

Question

    package hive.analytics;    
public class FirstUpper extends UDF {

    public Text evaulate(Text actualName) throws IOException{
        String name = actualName.toString().trim().toLowerCase();
        String fc = name.substring(0,1).toUpperCase();
        String rc = name.substring(1).toLowerCase();
        String res = fc + rc;       
        return new Text(res);       
    }
}

我按照以下步骤进行操作..

add jar /home/chenna/Desktop/HiveApp1.jar;

create temporary function fupper
     as 'hive.analytics.FirstUpper';

查询

select fupper(name) from emp;

错误

FAILED: SemanticException [Error 10014]: Line 1:7 Wrong arguments 'name': No matching method for class hive.analytics.FirstUpper with (string). Possible choices: