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/*
* Copyright (c) Contributors, http://opensimulator.org/
* See CONTRIBUTORS.TXT for a full list of copyright holders.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the OpenSimulator Project nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
using System;
using System.Collections.Generic;
using System.Text;
using OpenMetaverse;
namespace OpenSim.Data
{
public static class DBGuid
{
/// <summary>This function converts a value returned from the database in one of the
/// supported formats into a UUID. This function is not actually DBMS-specific right
/// now
///
/// </summary>
/// <param name="id"></param>
/// <returns></returns>
public static UUID FromDB(object id)
{
if ((id == null) || (id == DBNull.Value))
return UUID.Zero;
if (id.GetType() == typeof(Guid))
return new UUID((Guid)id);
if (id.GetType() == typeof(byte[]))
{
if (((byte[])id).Length == 0)
return UUID.Zero;
else if (((byte[])id).Length == 16)
return new UUID((byte[])id, 0);
}
else if (id.GetType() == typeof(string))
{
if (((string)id).Length == 0)
return UUID.Zero;
else if (((string)id).Length == 36)
return new UUID((string)id);
}
throw new Exception("Failed to convert db value to UUID: " + id.ToString());
}
}
}
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