private static object CreateObject(DbProviderFactory factory, ProviderSupportedClasses kindOfObject, string providerName)
{
switch (kindOfObject)
{
case ProviderSupportedClasses.DbConnection:
return(factory.CreateConnection());
case ProviderSupportedClasses.DbDataAdapter:
return(factory.CreateDataAdapter());
case ProviderSupportedClasses.DbParameter:
return(factory.CreateParameter());
case ProviderSupportedClasses.DbCommand:
return(factory.CreateCommand());
case ProviderSupportedClasses.DbCommandBuilder:
return(factory.CreateCommandBuilder());
case ProviderSupportedClasses.DbDataSourceEnumerator:
return(factory.CreateDataSourceEnumerator());
case ProviderSupportedClasses.CodeAccessPermission:
return(factory.CreatePermission(PermissionState.None));
}
throw new InternalException(string.Format(CultureInfo.CurrentCulture, "Cannot create object of provider class identified by enum {0} for provider {1}", new object[] { Enum.GetName(typeof(ProviderSupportedClasses), kindOfObject), providerName }));
}
private static object CreateObject(DbProviderFactory factory, ProviderSupportedClasses kindOfObject, string providerName)
{
switch (kindOfObject)
{
case ProviderSupportedClasses.DbConnection:
return factory.CreateConnection();
case ProviderSupportedClasses.DbDataAdapter:
return factory.CreateDataAdapter();
case ProviderSupportedClasses.DbParameter:
return factory.CreateParameter();
case ProviderSupportedClasses.DbCommand:
return factory.CreateCommand();
case ProviderSupportedClasses.DbCommandBuilder:
return factory.CreateCommandBuilder();
case ProviderSupportedClasses.DbDataSourceEnumerator:
return factory.CreateDataSourceEnumerator();
case ProviderSupportedClasses.CodeAccessPermission:
return factory.CreatePermission(PermissionState.None);
}
throw new InternalException(string.Format(CultureInfo.CurrentCulture, "Cannot create object of provider class identified by enum {0} for provider {1}", new object[] { Enum.GetName(typeof(ProviderSupportedClasses), kindOfObject), providerName }));
}
public static DbProviderFactory GetFactoryFromType(Type type, ProviderSupportedClasses kindOfObject)
{
if (type == null)
{
throw new ArgumentNullException("type");
}
if (providerData.Matches(type))
{
return(providerData.CachedFactory);
}
EnsureFactoryTable();
foreach (DataRow row in factoryTable.Rows)
{
DbProviderFactory factory = DbProviderFactories.GetFactory(row);
string providerName = (string)row[PROVIDER_NAME];
object obj2 = CreateObject(factory, kindOfObject, providerName);
if (type.Equals(obj2.GetType()))
{
providerData.Initialize(factory, (string)row[PROVIDER_INVARIANT_NAME], (string)row[PROVIDER_NAME], type);
return(factory);
}
}
throw new InternalException(string.Format(CultureInfo.CurrentCulture, "Unable to find DbProviderFactory for type {0}", new object[] { type.ToString() }));
}
public static DbProviderFactory GetFactoryFromType(Type type, ProviderSupportedClasses kindOfObject)
{
if (type == null)
{
throw new ArgumentNullException("type");
}
if (providerData.Matches(type))
{
return providerData.CachedFactory;
}
EnsureFactoryTable();
foreach (DataRow row in factoryTable.Rows)
{
DbProviderFactory factory = DbProviderFactories.GetFactory(row);
string providerName = (string) row[PROVIDER_NAME];
object obj2 = CreateObject(factory, kindOfObject, providerName);
if (type.Equals(obj2.GetType()))
{
providerData.Initialize(factory, (string) row[PROVIDER_INVARIANT_NAME], (string) row[PROVIDER_NAME], type);
return factory;
}
}
throw new InternalException(string.Format(CultureInfo.CurrentCulture, "Unable to find DbProviderFactory for type {0}", new object[] { type.ToString() }));
}
