DbProviderFactoryWrapper.cs

// Copyright (c) .NET Foundation. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.

using System;
using System.Data.Common;

namespace WebMatrix.Data
{
    internal class DbProviderFactoryWrapper : IDbProviderFactory
    {
        private string _providerName;
        private DbProviderFactory _providerFactory;

        public DbProviderFactoryWrapper(string providerName)
        {
            _providerName = providerName;
        }

        public DbConnection CreateConnection(string connectionString)
        {
            if (String.IsNullOrEmpty(_providerName))
            {
                // If the provider name is null or empty then use the default
                _providerName = Database.GetDefaultProviderName();
            }

            if (_providerFactory == null)
            {
                _providerFactory = DbProviderFactories.GetFactory(_providerName);
            }

            DbConnection connection = _providerFactory.CreateConnection();
            connection.ConnectionString = connectionString;
            return connection;
        }
    }
}