我有一个自定义类型和存储过程,定义如下:
CREATE OR REPLACE TYPE GuidArray is varray(1000) of RAW(32);
/
CREATE OR REPLACE
PROCEDURE BulkInsertTempItemGuid
(
ItemGuidList IN GuidArray default null
) AS
BEGIN
--
-- procedure body here
--
END;
/
我试图从c#应用程序中调用Oracle的ODP .NET中的这个存储过程。我似乎非常愿意正确设置我的OracleParameter
,因为Oracle告诉我我没有向它发送正确的参数集。我正在设置CollectionType,OracleDbType和Value,如下所示。 parameters
为OracleParameter
,arrangedGuidList
为IEnumerable<Guid>
。
parameter.CollectionType = OracleCollectionType.PLSQLAssociativeArray;
parameter.OracleDbType = OracleDbType.Raw;
parameter.Value = arrangedGuidList.ToArray();
例外:
ORA-06550: line 1, column 7:
PLS-00306: wrong number or types of arguments in call to 'BulkInsertTempItemGuid'
ORA-06550: line 1, column 7:
PL/SQL: Statement ignored
答案 0 :(得分:2)
使用数组调用存储过程一次(而不是调用接受原子项的过程并多次调用它)时,必须将OracleDbType设置为Array。该值设置为结构化的基础数据,如自定义oracle数据类型中所指定。在这种情况下,它是一个byte [] []。
parameter.OracleDbType = OracleDbType.Array;
parameter.UdtTypeName = "GUIDARRAY";
parameter.Value = arrangedGuidList.ToArray();
// Note, do NOT set the collection type. Default it to "none"
然后我定义了我的Oracle自定义类型。请看这里的例子。我修改了SimpleVarray / SimpleVarrayFactory类,但让它们与Byte [] []一起使用。
%ODAC_HOME%\ODACsamples\odp.net\4\UDT
工厂类的关键部分是自定义类型映射必须与参数的UdtTypeName属性匹配,并且是全部大写。似乎OracleCustomTypeMapping导致ODAC在运行时将参数中指定的自定义类型绑定到参数,并通过ToCustomObject / FromCustomObject方法在引擎盖下的某处构建GuidArray类。
[OracleCustomTypeMapping("GUIDARRAY")]
public class GuidArrayFactory : IOracleCustomTypeFactory, IOracleArrayTypeFactory
{
public IOracleCustomType CreateObject()
{
return new GuidArray();
}
// IOracleArrayTypeFactory Inteface
public Array CreateArray(int numElems)
{
return new Byte[numElems][];
}
public Array CreateStatusArray(int numElems)
{
// CreateStatusArray may return null if null status information
// is not required.
return new OracleUdtStatus[numElems];
}
}
-
// See %ODAC_HOME%\ODACsamples\odp.net\4\UDT
public class GuidArray : IOracleCustomType, INullable
{
[OracleArrayMapping]
public Byte[][] Array;
private OracleUdtStatus[] m_statusArray;
public OracleUdtStatus[] StatusArray
{
get
{
return m_statusArray;
}
set
{
m_statusArray = value;
}
}
private bool m_bIsNull;
public bool IsNull
{
get
{
return m_bIsNull;
}
}
public static GuidArray Null
{
get
{
GuidArray obj = new GuidArray();
obj.m_bIsNull = true;
return obj;
}
}
public void ToCustomObject(OracleConnection con, IntPtr pUdt)
{
object objectStatusArray = null;
Array = (Byte[][])OracleUdt.GetValue(con, pUdt, 0, out objectStatusArray);
m_statusArray = (OracleUdtStatus[])objectStatusArray;
}
public void FromCustomObject(OracleConnection con, IntPtr pUdt)
{
OracleUdt.SetValue(con, pUdt, 0, Array, m_statusArray);
}
public override string ToString()
{
if (m_bIsNull)
return "GuidArray.Null";
string rtnstr = String.Empty;
if (m_statusArray[0] == OracleUdtStatus.Null)
rtnstr = "NULL";
else
rtnstr = Array.GetValue(0).ToString();
for (int i = 1; i < m_statusArray.Length; i++)
{
if (m_statusArray[i] == OracleUdtStatus.Null)
rtnstr += "," + "NULL";
else
rtnstr += "," + Array.GetValue(i);
}
return "GuidArray(" + rtnstr + ")";
}
}