/* This file is part of the db4o object database http://www.db4o.com

Copyright (C) 2004 - 2010  Versant Corporation http://www.versant.com

db4o is free software; you can redistribute it and/or modify it under
the terms of version 3 of the GNU General Public License as published
by the Free Software Foundation.

db4o 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 this program.  If not, see http://www.gnu.org/licenses/. */
using System;
using Db4objects.Db4o.Foundation;
using Db4objects.Db4o.Internal;

namespace Db4objects.Db4o.native.Db4objects.Db4o.Typehandlers
{
	sealed internal class ComparablePreparedComparison<T> : IPreparedComparison where T : IComparable
	{
		public ComparablePreparedComparison(object source)
		{
			if (source is TransactionContext)
			{
				source = ((TransactionContext)source)._object;
			}

			_source = (IComparable)source;
		}

		public int CompareTo(object obj)
		{
			return _source.CompareTo(obj);
		}

		private readonly IComparable _source;
	}
}
