oracle存储过程如何返回list,并用jdbc调用

  

oracle没有直接的返回List的方法，这里需要有包定义一个Cursor（游标）的返回类型。下面是我在计算收益率的一段代码，只做参考。

oracle包的写法如下：

CREATE OR REPLACE PACKAGE CAL_RTN_PACK IS
       
  TYPE mycursor IS REF CURSOR;

 PROCEDURE getRtnListByPid_proc (
       p_pid IN tbsi_ante_port.p_id%TYPE,
       x_rs OUT mycursor
  );
END CAL_RTN_PACK;

create or replace package body cal_rtn_pack is

 PROCEDURE getRtnListByPid_proc (
       p_pid IN tbsi_ante_port.p_id%TYPE,
       x_rs OUT mycursor
  )
 IS
       v_start_date DATE; --每年第一个工作日
       v_bm_id tbsi_ante_port.bm_id%TYPE;
       v_bm_date DATE; --基准计算时间
       v_p_date DATE; --基金开始时间
 BEGIN
   SELECT
       min(bm_id) INTO v_bm_id
   FROM tprt_bench_drill b
   WHERE b.p_id = p_pid
   AND b.isdefault = DECODE(b.isdefault, 1, 1, b.isdefault);
   
   SELECT min(BEG_DATE) INTO v_bm_date
   FROM tbsi_ante_port
   WHERE p_id = p_pid
   AND bm_id = v_bm_id;
   
   SELECT min(BEG_DATE) INTO v_bm_date
   FROM tbsi_ante_port
   WHERE p_id = p_pid;
   
   IF v_bm_date > v_start_date AND v_p_date < v_start_date THEN 
     --当基准开始时间不在年初且基金生效时间小于年初 不计算
    NULL;
   ELSE
     OPEN x_rs FOR
     SELECT bm_id, beg_date, inv_rtn, inv_rtn_bench
     FROM tbsi_ante_port
     WHERE p_id = p_pid
     AND bm_id = v_bm_id;
   END IF;
   
 END getRtnListByPid_proc;
 
end cal_rtn_pack;

2. 要在java端接收这个返回的游标

public
List<PLMTbsiAntePort> getRtnListByPid(String pid) {
Session session =
null;
Connection conn =
null;
CallableStatement st =
null;
String sql =
"{call CAL_RTN_PACK.getRtnListByPid_proc(?, ?)}";

List<PLMTbsiAntePort> list;
try
{
session =
this.getMetaDBContext().getSession();
conn = session.connection();
st = conn.prepareCall(sql);
st.setString(1,
pid);
st.registerOutParameter(2,
OracleTypes.CURSOR);
st.execute();

ResultSet rs =
null;
rs = (ResultSet)st.getObject(2);
list =
new
ArrayList<PLMTbsiAntePort>();
while(rs.next())
{
PLMTbsiAntePort antePort =
new
PLMTbsiAntePort();
antePort.setBmId(rs.getString(1));
antePort.setBegDate(rs.getDate(2));
antePort.setpId(pid);
antePort.setInvRtn(rs.getDouble(3));
antePort.setInvRtnBench(rs.getDouble(4));
list.add(antePort);
}
}
catch
(Exception e) {
throw new
RuntimeException(e);
}
return
list;
}