/// <summary>
/// 根据指定的提供程序创建一个数据源查询与交互引擎的实例。
/// </summary>
/// <param name="provider">提供程序。</param>
/// <param name="connectionString">连接字符串。</param>
public static DbEngine Create(DbEngineProvider provider, string connectionString)
{
switch (provider)
{
case DbEngineProvider.MicrosoftSqlServer:
return(new MsSqlEngine(connectionString));
case DbEngineProvider.MicrosoftSqlServerCompact:
return(new MsSqlCeEngine(connectionString));
//case DbEngineProvider.MicrosoftOleDb2003:
//case DbEngineProvider.MicrosoftOleDb2007:
// return new OleDbEngine(provider, connectionString);
//case DbEngineProvider.SQLite:
// return new SQLiteEngine(connectionString);
//case DbEngineProvider.Oracle:
// return new OracleEngine(connectionString);
//case DbEngineProvider.MySql:
// return new MySqlEngine(connectionString);
}
return(null);
}
/// <summary>
/// 获取数据源查询与交互引擎提供程序的字符串表示。
/// </summary>
/// <param name="provider">提供程序。</param>
public static string GetProviderString(DbEngineProvider provider)
{
switch (provider)
{
case DbEngineProvider.MicrosoftSqlServer:
return(Provider_Microsoft_SQL_Server);
case DbEngineProvider.MicrosoftSqlServerCompact:
return(Provider_Microsoft_SQL_Server_Compact);
//case DbEngineProvider.MicrosoftOleDb2003:
// return Provider_Microsoft_OleDb2003;
//case DbEngineProvider.MicrosoftOleDb2007:
// return Provider_Microsoft_OleDb2007;
//case DbEngineProvider.SQLite:
// return Provider_SQLite;
//case DbEngineProvider.Oracle:
// return Provider_Oracle;
//case DbEngineProvider.MySql:
// return Provider_MySql;
}
return(null);
}
/// <summary>
/// 初始化 <see cref="DbAttribute"/> 类的新实例。
/// </summary>
/// <param name="provider">数据源查询与交互引擎的提供程序。</param>
public DbAttribute(DbEngineProvider provider)
{
this._Provider = provider;
}
