如何读取Oracle输出数组参数C#

时间:2018-12-19 12:47:22

标签: c# oracle

嗨,我有这个程序:

DECLARE 
 I_BIG_INSTITUTION_CODE VARCHAR2(10);
 I_BIG_ACTION_CODE VARCHAR2(10);
 O_CASES_TAB MY_API.VARCHAR_TAB;
 I_USER VARCHAR2(200);
 I_AD_USER VARCHAR2(200);
 I_LANGUAGE VARCHAR2(200);
 I_ASYS_ID NUMBER;
 O_RESULT_SUCCESSFUL BINARY_INTEGER;
 O_MESSAGE VARCHAR2(200);
BEGIN
 I_BIG_INSTITUTION_CODE := 'KRD';
 I_BIG_ACTION_CODE := 'ADD';
 I_USER := 'User User';
 I_AD_USER := 'u.user';
 I_LANGUAGE := 'PL';
 I_ASYS_ID := 100;
 MY_API.PACKAGE_NAME.GET_PACK_TO_SEND(
 I_BIG_INSTITUTION_CODE => I_BIG_INSTITUTION_CODE,
 I_BIG_ACTION_CODE => I_BIG_ACTION_CODE,
 O_CASES_TAB => O_CASES_TAB,
 I_USER => I_USER,
 I_AD_USER => I_AD_USER,
 I_LANGUAGE => I_LANGUAGE,
 I_ASYS_ID => I_ASYS_ID,
 O_RESULT_SUCCESSFUL => O_RESULT_SUCCESSFUL,
 O_MESSAGE => O_MESSAGE);
  if O_CASES_TAB.count>0 then
   for i in  O_CASES_TAB.first..O_CASES_TAB.last loop
    DBMS_OUTPUT.PUT_LINE('O_CASES_TAB = ' || O_CASES_TAB(i));
   end loop;
  end if;
 DBMS_OUTPUT.PUT_LINE('O_RESULT_SUCCESSFUL = ' || O_RESULT_SUCCESSFUL);
 DBMS_OUTPUT.PUT_LINE('O_MESSAGE = ' || O_MESSAGE);
END;

该过程返回如下内容: Procedure result

现在,我需要阅读C#中的 o_cases_tab 参数,但是我不知道该怎么做。这是尝试执行此操作的代码:

public void GetPackToSend()
    {
        using (var connection = ConnectionFactory.GetConnection())
        {
            connection.Open();
            using (var command = connection.CreateCommand())
            {
                command.CommandText = "MY_API.PACKAGE_NAME.GET_PACK_TO_SEND";
                command.CommandType = CommandType.StoredProcedure;
                command.Parameters.Add("input_parameter1", OracleDbType.NVarchar2).Value = "value_1" ;
                command.Parameters.Add("input_parameter2", OracleDbType.NVarchar2).Value = "value_2";
                AddOutArrayParameter(command, "o_cases_tab", "MY_API.VARCHAR_TAB", 10);
                command.Parameters.AddRange(OracleParameterHelper.GetDefaultInputParameters()
                    .ToArray());
                command.Parameters.AddRange(OracleParameterHelper.GetDefaultOutputParameters().ToArray());

                try
                {
                    command.ExecuteNonQuery();

                    var dbResult = new Tuple<string, string, object>(
                        command.Parameters["o_result_successful"].Value.ToString(),
                        command.Parameters["o_message"].Value.ToString(),
                        command.Parameters["o_cases_tab"].Value);
                }
                catch (OracleException ex)
                {
                    throw ex;

                }
                catch (Exception ex)
                {
                    throw ex;
                }
            }
        }

dbResult = {(1,null,System.Object [])} 因此,在参数 o_cases_tab 中,我有: System.Object []

方法addOutArrayParameter

private static void AddOutArrayParameter(OracleCommand command, string paramName,
        string paramTypeName, int size = 1)
    {
        var parameter = command.CreateParameter();
        parameter.Size = size;
        parameter.ArrayBindSize = size;
        parameter.UdtTypeName = paramTypeName;
        parameter.ParameterName = paramName;
        parameter.CollectionType = OracleCollectionType.PLSQLAssociativeArray;
        parameter.Direction = ParameterDirection.Output;
        parameter.OracleDbType = OracleDbType.Array;
        command.Parameters.Add(parameter);
    }

我肯定是在犯一个愚蠢的错误,但是我第一次使用oracle,所以我要放纵自己。

0 个答案:

没有答案