public static IQueryable <TElement> ExpandInvocations <TElement>(this IQueryable <TElement> query)
{
Validation.CheckArgumentNotNull(query, "query");
return(query.Provider.CreateQuery <TElement>(query.Expression.ExpandInvocations()));
}
/// <summary>
/// Returns a handle on an IDisposable that can be used to safely control the lifetime
/// of an open connection. If the connection is closed, it will be opened immediately
/// and closed when the result of this method (the scope) is disposed. If the connection is already
/// open, it remains open.
/// <code>
/// // Example with CreateConnectionScope
/// using (command.Connection.CreateConnectionScope())
/// {
/// command.ExecuteNonQuery();
/// }
///
/// // Example without
/// bool connectionOpened = command.Connection.State == ConnectionState.Closed;
/// if (connectionOpened)
/// {
/// command.Connection.Open();
/// }
/// try
/// {
/// command.ExecuteNonQuery();
/// }
/// finally
/// {
/// if (connectionOpened && command.Connection.State == ConnectionState.Open)
/// {
/// command.Connection.Close();
/// }
/// }
/// </code>
/// </summary>
/// <param name="connection">Connection to open.</param>
/// <returns>Scope closing the connection on dispose.</returns>
public static IDisposable CreateConnectionScope(this DbConnection connection)
{
Validation.CheckArgumentNotNull(connection, "connection");
return(new OpenConnectionLifetime(connection));
}
