public virtual DbProviderServices TryGetInstance(string providerTypeName)
{
Type type = Type.GetType(providerTypeName, false);
if (!(type == (Type)null))
{
return(ProviderServicesFactory.GetInstance(type));
}
return((DbProviderServices)null);
}
public virtual DbProviderServices GetInstance(
string providerTypeName,
string providerInvariantName)
{
Type type = Type.GetType(providerTypeName, false);
if (type == (Type)null)
{
throw new InvalidOperationException(Strings.EF6Providers_ProviderTypeMissing((object)providerTypeName, (object)providerInvariantName));
}
return(ProviderServicesFactory.GetInstance(type));
}
internal AppConfig(
ConnectionStringSettingsCollection connectionStrings,
KeyValueConfigurationCollection appSettings,
EntityFrameworkSection entityFrameworkSettings,
ProviderServicesFactory providerServicesFactory = null)
{
DebugCheck.NotNull(connectionStrings);
_connectionStrings = connectionStrings;
_appSettings = appSettings ?? new KeyValueConfigurationCollection();
_entityFrameworkSettings = entityFrameworkSettings ?? new EntityFrameworkSection();
_providerServicesFactory = providerServicesFactory ?? new ProviderServicesFactory();
_providerServices = new Lazy<IList<NamedDbProviderService>>(
() => _entityFrameworkSettings
.Providers
.OfType<ProviderElement>()
.Select(
e => new NamedDbProviderService(
e.InvariantName,
_providerServicesFactory.GetInstance(e.ProviderTypeName, e.InvariantName)))
.ToList());
if (_entityFrameworkSettings.DefaultConnectionFactory.ElementInformation.IsPresent)
{
_defaultConnectionFactory = new Lazy<IDbConnectionFactory>(
() =>
{
var setting = _entityFrameworkSettings.DefaultConnectionFactory;
try
{
var type = setting.GetFactoryType();
var args = setting.Parameters.GetTypedParameterValues();
return (IDbConnectionFactory)Activator.CreateInstance(type, args);
}
catch (Exception ex)
{
throw new InvalidOperationException(
Strings.SetConnectionFactoryFromConfigFailed(setting.FactoryTypeName), ex);
}
}, isThreadSafe: true);
}
else
{
_defaultConnectionFactory = _defaultDefaultConnectionFactory;
}
}