Availability of DbProviderFactory in ODP

Question

Does anyone know if Oracle or someone has created a DbProviderFactory for ODP. From the page
http://msdn.microsoft.com/en-us/library/cy5kfe3c(v=VS.80).aspx
ADO.NET 2.0 introduces new base classes in the System.Data.Common namespace. The base classes are abstract... They include DbConnection, DbCommand, and DbDataAdapter
The Factory Design Pattern
The programming model for writing provider-independent code is based on the use of the "factory" design pattern, which uses a single API to access databases across multiple providers. This pattern is aptly named, as it calls for the use of a specialized object solely to create other objects, much like a real-world factory.

Answer 1

I may be missing the point here, but what are you looking for? ODP supports factory classes when support for ADO.NET 2.x was introduced in 10.2.0.2.21, and factory class code is generic.
If you click the "Writing Generic Data Access Code in ASP.NET 2.0 and ADO.NET 2.0" link in the URL you've referenced, you'll see sample code. To change that code to use ODP, simply change
DbProviderFactory provider = DbProviderFactories.GetFactory("System.Data.SqlClient");
to
DbProviderFactory provider = DbProviderFactories.GetFactory("Oracle.DataAccess.Client");
and provide an appropriate connect string.
Note however that you won't be able to take advantage of a lot of the functionality built into ODP without introducing ODP specific code, as the common framework is somewhat like ODBC in that it's written to the lowest common functionality.
Corrections/comments welcome, hope it helps.
Greg
    DbProviderFactory provider = DbProviderFactories.GetFactory("Oracle.DataAccess.Client");
    DbConnection con = provider.CreateConnection();
    con.ConnectionString = @"Data Source=mytnsnamesalias; user id=myuid;password=mypwd";
    DbCommand com = provider.CreateCommand();
    com.Connection = con;
    com.CommandText = "Select * From Subscribers";
    com.CommandType = CommandType.Text;
    DataSet ds = new DataSet();
    DbDataAdapter ad = provider.CreateDataAdapter();
    ad.SelectCommand = com;
    con.Open();
    ad.Fill(ds);
    con.Close();
    return ds.Tables[0].DefaultView;Edited by: gdarling on Jun 18, 2010 10:27 AM