private static DbProviderFactory GetDbProviderFactory(string providerName)
{
DbProviderFactory dbProviderFactory;
if (!string.IsNullOrEmpty(providerName))
{
//
// If the user has supplied a provider name, that's the one
// we must use.
//
dbProviderFactory = DbProviderFactoryQuery.GetFactory(providerName);
}
else
{
//
// Otherwise, we try to use ODP.Net in the first instance
// and then fallback to the Microsoft client.
//
dbProviderFactory = DbProviderFactoryQuery.FindFactory("Oracle.DataAccess.Client")
?? DbProviderFactoryQuery.GetFactory("System.Data.OracleClient");
}
return(dbProviderFactory);
}
public void InitializationDefaultsToOracleThenMicrosoftProvider()
{
var lookups = new Queue <string>(2);
using (DbProviderFactoryQuery.PushGetFactoryHandler(next => (sender, name) =>
{
lookups.Enqueue(name);
throw new ArgumentException();
}))
{
Assert.Throws <ArgumentException>(() => new OracleErrorLog("..."));
Assert.Equal(2, lookups.Count);
Assert.Equal("Oracle.DataAccess.Client", lookups.Dequeue());
Assert.Equal("System.Data.OracleClient", lookups.Dequeue());
var config = new Dictionary <string, string>
{
{ "connectionString", "..." },
};
Assert.Throws <ArgumentException>(() => new OracleErrorLog(config));
Assert.Equal(2, lookups.Count);
Assert.Equal("Oracle.DataAccess.Client", lookups.Dequeue());
Assert.Equal("System.Data.OracleClient", lookups.Dequeue());
}
}
private static DbProviderFactory GetDbProviderFactory(string providerName)
{
DbProviderFactory dbProviderFactory;
if (!string.IsNullOrEmpty(providerName))
{
//
// If the user has supplied a provider name, that's the one
// we must use.
//
dbProviderFactory = DbProviderFactoryQuery.GetFactory(providerName);
}
else
{
//
// Otherwise, we fallback to the Microsoft client.
//
dbProviderFactory = DbProviderFactoryQuery.GetFactory("System.Data.OracleClient");
}
return(dbProviderFactory);
}
