#region Apache Notice
/*****************************************************************************
* $Header: $
* $Revision: 512878 $
* $Date: 2007-02-28 18:57:11 +0100 (mer., 28 fvr. 2007) $
*
* iBATIS.NET Data Mapper
* Copyright (C) 2004 - Gilles Bayon
*
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
********************************************************************************/
#endregion
#region Imports
using System;
using System.Runtime.CompilerServices;
#endregion
namespace IBatisNet.Common.Utilities{
using System.Reflection;
/// <summary>
/// Summary description for HashCodeProvider.
/// </summary>
public sealed class HashCodeProvider
{
private static MethodInfo getHashCodeMethodInfo = null;
static HashCodeProvider()
{
Type type = typeof(object);
getHashCodeMethodInfo = type.GetMethod("GetHashCode");
}
/// <summary>
/// Supplies a hash code for an object.
/// </summary>
/// <param name="obj">The object.</param>
/// <returns>A hash code</returns>
/// <remarks>
/// Buggy in .NET V1.0
/// .NET Fx v1.1 Update:
/// As of v1.1 of the framework, there is a method System.Runtime.CompilerServices.RuntimeHelpers.GetHashCode(object) that does this as well.
/// I will not use to Keep compatiblity with .NET V1.0
/// </remarks>
public static int GetIdentityHashCode(object obj)
{
//#if dotnet2
//return RuntimeHelpers.GetHashCode(obj);
//#else
// call the underlying System.Object.GetHashCode()
return (int)getHashCodeMethodInfo.Invoke(obj, null);
//#endif
}
}
}
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