如果您使用的是 Entity Framework 4.1 Code First,您可以尝试使用Database.SqlQuery Method。例如,对于这个函数
CREATE OR REPLACE FUNCTION USERNAME_CTX.FUNCTION1 (param number)
RETURN number
AS
BEGIN
return param + 1;
END;
您可以使用以下代码:
using (var ctx = new Model()) {
var result = ctx.Database.SqlQuery<int>("select username_ctx.FUNCTION1(:p0) from dual",1).FirstOrDefault();
}
编辑:
请注意这个针对 dotConnect for Oracle 的解决方案(也许它对于为 ODP.NET 实施类似的解决方案很有用)
对于此功能:
CREATE OR REPLACE FUNCTION USERNAME_CTX.FUNCTION2 (param number, int_param out number, str_param out varchar2)
RETURN number
AS
BEGIN
int_param := param + 2;
str_param := 'value';
return param + 1;
END;
您可以使用以下代码:
using (var ctx = new Model()) {
var firstParam = new Devart.Data.Oracle.OracleParameter("p0", OracleDbType.Number, 1, ParameterDirection.Input);
var secondParam = new Devart.Data.Oracle.OracleParameter("p1", OracleDbType.Number, ParameterDirection.Output);
var thirdParam = new Devart.Data.Oracle.OracleParameter("p2", OracleDbType.VarChar, ParameterDirection.Output);
var cursorParam = new Devart.Data.Oracle.OracleParameter("cursor_param", OracleDbType.Cursor, ParameterDirection.Output);
var result = ctx.Database.SqlQuery<int>(
@"declare
res number;
begin
res := username_ctx.FUNCTION2(:p0, :p1, :p2);
open :cursor_param for select res from dual;
end;", firstParam, secondParam, thirdParam, cursorParam).FirstOrDefault();
Console.WriteLine("Return value: {0}; int_param: {1}; str_param: '{2}'", result, secondParam.Value, thirdParam.Value);
}
已编辑 2
或使用此代码:
using (var ctx = new Model()) {
var firstParam = new Devart.Data.Oracle.OracleParameter("p0", OracleDbType.Number, 1, ParameterDirection.Input);
var secondParam = new Devart.Data.Oracle.OracleParameter("p1", OracleDbType.Number, ParameterDirection.Output);
var thirdParam = new Devart.Data.Oracle.OracleParameter("p2", OracleDbType.VarChar, ParameterDirection.Output);
var resultParam = new Devart.Data.Oracle.OracleParameter("res", OracleDbType.Number, 1, ParameterDirection.Output);
ctx.Database.ExecuteSqlCommand(@"begin :res := username_ctx.FUNCTION2(:p0, :p1, :p2); end;", firstParam, secondParam, thirdParam, resultParam);
Console.WriteLine("Return value: {0}; int_param: {1}; str_param: '{2}'", resultParam.Value, secondParam.Value, thirdParam.Value);
}