/*=========================*/
#endregion
#region Provider registration
/*=========================*/
/// <summary>
///
/// </summary>
/// <param name="providerName"></param>
/// <param name="provider"></param>
public static void RegisterProvider(PersistenceProvider provider)
{
if (provider == null)
{
throw new ArgumentNullException("provider");
}
string providerName = provider.Name;
if (String.IsNullOrWhiteSpace(providerName) || providerName.IndexOf(PersistenceConnection.ConnectionNameSeparator) >= 0)
{
throw new ArgumentException("Provider name cannot be empty and cannot contain the '" + PersistenceConnection.ConnectionNameSeparator + "' character.", "provider");
}
// EXCEPTION:
if (_registeredProviders.ContainsKey(providerName))
{
throw new Exception(String.Format("A provider is already registered with the name '{0}'.", providerName));
}
lock (_registeredProviders)
{
_registeredProviders.Add(providerName, provider);
}
}
/// <summary>
///
/// </summary>
/// <param name="providerName"></param>
/// <param name="threadLocal"></param>
/// <returns>A new connection object if one was created, otherwise null if the specified connection was already open.</returns>
public static PersistenceConnection Connect(string providerName, string connectionName = null, bool threadLocal = true)
{
PersistenceProvider provider = GetOrThrow(providerName);
// Get the requested connection lists
PersistenceConnectionManager connections;
if (!threadLocal)
{
connections = _globalConnections;
}
else
{
if (_localConnections == null)
{
_localConnections = new PersistenceConnectionManager(true);
}
connections = _localConnections;
}
PersistenceConnection conn = connections.SwitchTo(provider, connectionName);
// If it's not open, open it and return it, otherwise return null
if (!conn.IsOpen)
{
conn.Open();
return(conn);
}
else
{
return(null);
}
}
/// <summary>
///
/// </summary>
/// <param name="providerName"></param>
public static void ForceClose(string providerName, string connectionName = null)
{
PersistenceProvider provider = GetOrThrow(providerName);
PersistenceConnection conn = null;
if (_localConnections != null)
{
conn = _localConnections[providerName, connectionName];
}
if (conn == null)
{
conn = _globalConnections[providerName, connectionName];
}
// Close and remove connection
if (conn != null)
{
if (conn.IsOpen)
{
Close(conn);
}
_localConnections.Remove(conn);
}
}
void IDisposable.Dispose()
{
if (IsOpen)
{
PersistenceProvider.Close(this);
}
}
/// <summary>
///
/// </summary>
/// <param name="provider"></param>
public static void UnregisterProvider(PersistenceProvider provider)
{
lock (_registeredProviders)
{
_registeredProviders.Remove(provider.Name);
}
}
public static void Register(string providerName, PersistenceProvider provider)
{
// EXCEPTION:
if (_registeredProviders.ContainsKey(providerName))
{
throw new Exception("A provider is already registered under this name.");
}
_registeredProviders.Add(providerName, provider);
}
public PersistenceProvider(PersistenceProvider provider, PersistenceProviderConfiguration configuration)
{
// Check required attribute
object[] attr = this.GetType().GetCustomAttributes(typeof(RequiresCustomSettingsAttribute), true);
if (attr.Length > 0)
{
RequiresCustomSettingsAttribute attribute = (RequiresCustomSettingsAttribute)attr[0];
foreach (string setting in attribute.RequiredSettings)
{
// EXCEPTION:
if (!configuration.CustomSettings.ContainsKey(setting))
{
throw new ConfigurationErrorsException(String.Format("The custom configuration setting {0} is required.", setting));
}
}
}
Configuration = configuration;
}
public PersistenceConnection SwitchTo(PersistenceProvider provider, string connectionName)
{
int index = IndexOf(provider.Name, connectionName);
// Connection is already at top of stack
//if (index == 0)
// return;
// Either reuse an existing or create a new connection
PersistenceConnection connection = index < 0 ?
connection = provider.NewConnection(connectionName, _threadLocal) :
connection = _connections[index];
if (index != 0)
{
SwitchTo(connection);
}
return(connection);
}
protected override void OnExecute(PersistenceProvider provider)
{
//if (!(provider is SqlServerPersistenceProvider))
// throw new NotSupportedException("This command can only be executed using a SqlServerPersistenceProvider.");
}
protected virtual void OnExecute(PersistenceProvider provider)
{
}
/*=========================*/
#endregion
#region Constructors
/*=========================*/
internal protected PersistenceConnection(PersistenceProvider provider)
{
Provider = provider;
}