/// <summary>
/// Enables the DataRepository to programatically create and
/// pass in a <c>NetTiersProvider</c> during runtime.
/// </summary>
/// <param name="provider">An instatiated NetTiersProvider.</param>
/// <param name="setAsDefault">ability to set any valid provider as the default provider for the DataRepository.</param>
public static void LoadProvider(NetTiersProvider provider, bool setAsDefault)
{
if (provider == null)
throw new ArgumentNullException("provider");
if (_providers == null)
{
lock(SyncRoot)
{
if (_providers == null)
_providers = new NetTiersProviderCollection();
}
}
if (_providers[provider.Name] == null)
{
lock (_providers.SyncRoot)
{
_providers.Add(provider);
}
}
if (_provider == null || setAsDefault)
{
lock (SyncRoot)
{
if(_provider == null || setAsDefault)
_provider = provider;
}
}
}
///<summary>
/// Configuration based provider loading, will load the providers on first call.
///</summary>
private static void LoadProviders()
{
// Avoid claiming lock if providers are already loaded
if (_provider == null)
{
lock (SyncRoot)
{
// Do this again to make sure _provider is still null
if (_provider == null)
{
// Load registered providers and point _provider to the default provider
_providers = new NetTiersProviderCollection();
ProvidersHelper.InstantiateProviders(NetTiersSection.Providers, _providers, typeof(NetTiersProvider));
_provider = _providers[NetTiersSection.DefaultProvider];
if (_provider == null)
{
throw new ProviderException("Unable to load default NetTiersProvider");
}
}
}
}
}
/// <summary>
/// Instantiates the configured providers based on the supplied connection string.
/// </summary>
private void LoadProviders()
{
DataRepository.LoadProviders();
// Avoid claiming lock if providers are already loaded
if ( _providers == null )
{
lock ( SyncRoot )
{
// Do this again to make sure _provider is still null
if ( _providers == null )
{
// apply connection information to each provider
for ( int i = 0; i < NetTiersSection.Providers.Count; i++ )
{
NetTiersSection.Providers[i].Parameters["connectionStringName"] = _connectionStringName;
// remove previous connection string, if any
NetTiersSection.Providers[i].Parameters.Remove("connectionString");
if ( !String.IsNullOrEmpty(_connectionString) )
{
NetTiersSection.Providers[i].Parameters["connectionString"] = _connectionString;
}
}
// Load registered providers and point _provider to the default provider
_providers = new NetTiersProviderCollection();
ProvidersHelper.InstantiateProviders(NetTiersSection.Providers, _providers, typeof(NetTiersProvider));
_provider = _providers[NetTiersSection.DefaultProvider];
}
}
}
}