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/*
******************************************************************************
This file is part of MattRaffelNetCode.
MattRaffelNetCode is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
MattRaffelNetCode is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with MattRaffelNetCode; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
architected and written by
matt raffel
matt.raffel@mindspring.com
copyright (c) 2007 by matt raffel unless noted otherwise
******************************************************************************
*/
#region using statements
using System;
using System.Collections.Generic;
using System.Text;
using MattRaffelNetCode.Apps.SqlCodeGen.Interfaces;
#endregion
namespace MattRaffelNetCode.Apps.SqlCodeGen.Classes
{
#region TableInquiryLoader Class Implementation
/// <summary>
/// Used to load custom ITableInquiry implementation. <see cref="ITableInquiry"/>
/// </summary>
public class TableInquiryLoader
{
#region private methods
/// <summary>
///
/// </summary>
/// <param name="configurationInfoStr"></param>
/// <returns></returns>
private static ITableInquiry LoadInquiry(string configurationInfoStr)
{
ITableInquiry inquiry = null;
const int ASSEMBLY = 1;
const int CLASSNAME = 0;
// expecting configurationInfoStr to look like:
// fullynamedspaceclassname,assemblyname
//
// such as:
// MattRaffelNetCode.Apps.SqlCodeGen.Classes.SqlTableInquiry,SqlCodeGenSupport
string[] assemblyParts = configurationInfoStr.Split(new char[] { ',' });
if (2 != assemblyParts.Length)
throw new TypeLoaderException(string.Format("{0} is not valid", configurationInfoStr));
inquiry = (ITableInquiry)AppDomain.CurrentDomain.CreateInstanceAndUnwrap(assemblyParts[ASSEMBLY], assemblyParts[CLASSNAME]);
return inquiry;
}
#endregion
#region public methods
/// <summary>
/// Used to load the ITableInquiry implementation specified in the config file
/// </summary>
/// <param name="configurationInfo">string, from the config file ApplicationSettings.Settings.TableInquiry</param>
/// <param name="loadDefaultOnFailure">bool, if true and the specified type cannot be load will load the default instead</param>
/// <returns>ITableInquiry instance, null if formatter could not be loaded</returns>
public static ITableInquiry LoadInquiry(string configurationInfoStr, bool loadDefaultOnFailure)
{
ITableInquiry inquiry = null;
try
{
inquiry = LoadInquiry(configurationInfoStr);
}
catch
{
if ((true == loadDefaultOnFailure) && (null == inquiry))
{
const string DEFAULT_CONFIG_INFO = "MattRaffelNetCode.Apps.SqlCodeGen.Classes.SqlTableInquiry,SqlCodeGenSupport";
inquiry = LoadInquiry(DEFAULT_CONFIG_INFO);
}
}
return inquiry;
}
#endregion
}
#endregion
}
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