从C#将表类型对象作为输入参数传递给Oracle中的存储过程 [英] Pass table-type object as input parameter to Stored Procedure in Oracle from C#
问题描述
我有接受表类型作为输入参数的存储过程. 如何通过C#代码传递对象?
I have stored procedure which accepts table-type as input parameter. How to pass object from c# code?
create or replace TYPE CUSTOM_TYPE AS OBJECT
(
attribute1 VARCHAR(10),
attribute2 VARCHAR(10)
);
create or replace TYPE CUSTOM_TYPE_ARRAY AS TABLE OF CUSTOM_TYPE;
PROCEDURE SP_TEST
(
P_TABLE_IN IN CUSTOM_TYPE_ARRAY,
P_RESULT_OUT OUT SYS_REFCURSOR
) AS
BEGIN
OPEN P_RESULT_OUT FOR
SELECT ti.attribute1, ti.attribute2, ti.attribute3
FROM TABLE(P_TABLE_IN) ea inner join MYTABLE ti on ea.attribute1 = ti.attribute1 and ea.attribute2 = ti.attribute2;
END SP_TEST;
并尝试添加这样的参数:
And trying to add parameter like this:
var oracleParam = new OracleParameter();
oracleParam.OracleDbType = OracleDbType.Array;
oracleParam.Direction = ParameterDirection.Input;
oracleParam.ParameterName = "P_TABLE_IN";
oracleParam.Value = entities;
oracleCommand.Parameters.Add(oracleParam);
实体是实体的自定义集合的实例(具有定义的oracle属性映射)
Where entities is an instance of custom collection of entities (with defined oracle attributes mapping)
public class EntityUdt
{
[OracleObjectMappingAttribute("attribute1")]
public string attribute1 {get;set;}
[OracleObjectMappingAttribute("attribute2")]
public string attribute2 {get;set;}
}
我遵循了本指南正确定义.net实体,但通过传递我的列表仍然没有运气:
I followed this guide to define .net entity properly but still no luck with passing my list:
System.InvalidOperationException由用户代码未处理
HResult = -2146233079
Message ='EntityUdt :: attribute1 :: OracleObjectMappingAttribute' 无法设置为无效值'attribute1'
源= Oracle.DataAccess StackTrace: 在Oracle.DataAccess.Types.OracleUdtDescriptor.DescribeCustomType(Object customTypeFactory)
System.InvalidOperationException was unhandled by user code
HResult=-2146233079
Message='EntityUdt::attribute1::OracleObjectMappingAttribute' cannot be set to an invalid value of 'attribute1'
Source=Oracle.DataAccess StackTrace: at Oracle.DataAccess.Types.OracleUdtDescriptor.DescribeCustomType(Object customTypeFactory)
推荐答案
我花了数小时试图找出问题所在,事实证明,由oracle属性定义的映射应具有与属性名称不同的名称.
I spent hours trying to identify the issue and it turned out that mapping defined by oracle attributes should have different name than property name.
所以我只需将所有映射属性都大写即可,现在就可以使用!
So I just make all the mapping attributes uppercase and it works now!
[OracleObjectMappingAttribute("ATTRIBUTE1")]
public string attribute1 { get; set; }
[OracleObjectMappingAttribute("ATTRIBUTE2")]
public string attribute2 { get; set; }
这篇关于从C#将表类型对象作为输入参数传递给Oracle中的存储过程的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!