/// <summary>
/// Adds the specified provider.
/// </summary>
/// <param name="provider">The provider.</param>
public void Add(NetTiersProvider provider)
{
if (provider == null)
{
throw new ArgumentNullException("provider");
}
if (!(provider is NetTiersProvider))
{
throw new ArgumentException("Invalid provider type", "provider");
}
base.Add(provider);
}
/// <summary>
/// Fill a TList<Classes> From a DataReader.
/// </summary>
/// <param name="reader">Datareader</param>
/// <param name="rows">The collection to fill</param>
/// <param name="start">Row number at which to start reading, the first row is 0.</param>
/// <param name="pageLength">number of rows.</param>
/// <returns>a <see cref="TList<Classes>"/></returns>
public static TList <Classes> Fill(IDataReader reader, TList <Classes> rows, int start, int pageLength)
{
NetTiersProvider currentProvider = DataRepository.Provider;
bool useEntityFactory = currentProvider.UseEntityFactory;
bool enableEntityTracking = currentProvider.EnableEntityTracking;
LoadPolicy currentLoadPolicy = currentProvider.CurrentLoadPolicy;
Type entityCreationFactoryType = currentProvider.EntityCreationalFactoryType;
// advance to the starting row
for (int i = 0; i < start; i++)
{
if (!reader.Read())
{
return(rows); // not enough rows, just return
}
}
for (int i = 0; i < pageLength; i++)
{
if (!reader.Read())
{
break; // we are done
}
string key = null;
School.Entities.Classes c = null;
if (useEntityFactory)
{
key = new System.Text.StringBuilder("Classes")
.Append("|").Append((System.Int32)reader[((int)ClassesColumn.Id - 1)]).ToString();
c = EntityManager.LocateOrCreate <Classes>(
key.ToString(), // EntityTrackingKey
"Classes", //Creational Type
entityCreationFactoryType, //Factory used to create entity
enableEntityTracking); // Track this entity?
}
else
{
c = new School.Entities.Classes();
}
if (!enableEntityTracking ||
c.EntityState == EntityState.Added ||
(enableEntityTracking &&
(
(currentLoadPolicy == LoadPolicy.PreserveChanges && c.EntityState == EntityState.Unchanged) ||
(currentLoadPolicy == LoadPolicy.DiscardChanges && c.EntityState != EntityState.Unchanged)
)
))
{
c.SuppressEntityEvents = true;
c.Id = (System.Int32)reader[((int)ClassesColumn.Id - 1)];
c.ClassNumber = (System.String)reader[((int)ClassesColumn.ClassNumber - 1)];
c.EntityTrackingKey = key;
c.AcceptChanges();
c.SuppressEntityEvents = false;
}
rows.Add(c);
}
return(rows);
}
/// <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];
}
}
}
}
///<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>
/// 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>
/// Enables the DataRepository to programatically create and
/// pass in a <c>NetTiersProvider</c> during runtime.
/// </summary>
/// <param name="provider">An instatiated NetTiersProvider.</param>
public static void LoadProvider(NetTiersProvider provider)
{
LoadProvider(provider, false);
}
