java调用mysql方法

CREATE FUNCTION `queryCompanyId` (areaId VARCHAR(50))
RETURNS varchar(50)
BEGIN
DECLARE sTemp VARCHAR(50);
DECLARE sTempChd VARCHAR(50);
DECLARE deptType INT;


SET sTemp = areaId;
SET deptType = 0;

WHILE deptType!=1 DO
SET sTemp = CONCAT(sTemp,‘,‘,sTempChd);
SELECT pid,type,id INTO areaId,deptType,sTemp FROM sys_department where id=areaId;
END WHILE;
RETURN sTemp;
END

public String findCompanyId(String deptId) throws Exception {
        String companyId = "";
        Query query = this.getSession().createSQLQuery("select queryCompanyId(?)");
        query.setParameter(0, deptId);
        List<String> list = query.list();
        if(list != null && list.size()>0) {
            companyId = list.get(0);
        }
        return companyId;
    }