Can an Oracle stored procedure that has a nested table parameter be called from ODP.NET?

Question

I\'ve got a stored procedure that has a couple parameters that are nested tables.

CREATE TYPE FOO_ARRAY AS TABLE OF NUMBER;
CREATE TYPE BAR_ARRAY AS TABLE OF         


        

Answer 1

I made it work this way:

• Create a type in the database like "create or replace TYPE NT_LNG IS TABLE OF varchar(2);"
• Create a Class implementing IOracleCustomType and INullable (SimpleStringArray)
• Create a Class implementing IOracleCustomTypeFactory (SimpleStringArrayFactory). Mark it with this attribute "[OracleCustomTypeMappingAttribute("KNL.NT_LNG")]"

and you pass the parameter like this:

 SimpleStringArray sa1 = new SimpleStringArray();
 sa1.Array = new String[]{"aaa","bbb"};
 OracleParameter param = new OracleParameter("p_lngsrc", OracleDbType.Array, sa1, ParameterDirection.Input);
 param.UdtTypeName = "KNL.NT_LNG";

Good Luck

Answer 2

Oracle also offers a free tool to generate a custom .NET class that maps to your nested table type:

Download "Oracle Developer Tools for Visual Studio" (free), open Server Explorer, open "User Defined Types" node, find your user defined type, right click and choose "Generate Custom Class".

Here's a walkthrough to get you started with UDTs in general:

http://www.oracle.com/webfolder/technetwork/tutorials/obe/db/hol08/dotnet/udt/udt_otn.htm