DBGuids.cs 2.9 KB

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  1. /*
  2. * Copyright (c) Contributors, http://opensimulator.org/
  3. * See CONTRIBUTORS.TXT for a full list of copyright holders.
  4. *
  5. * Redistribution and use in source and binary forms, with or without
  6. * modification, are permitted provided that the following conditions are met:
  7. * * Redistributions of source code must retain the above copyright
  8. * notice, this list of conditions and the following disclaimer.
  9. * * Redistributions in binary form must reproduce the above copyright
  10. * notice, this list of conditions and the following disclaimer in the
  11. * documentation and/or other materials provided with the distribution.
  12. * * Neither the name of the OpenSimulator Project nor the
  13. * names of its contributors may be used to endorse or promote products
  14. * derived from this software without specific prior written permission.
  15. *
  16. * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
  17. * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  18. * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  19. * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
  20. * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  21. * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  22. * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  23. * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24. * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  25. * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26. */
  27. using System;
  28. using System.Collections.Generic;
  29. using System.Text;
  30. using OpenMetaverse;
  31. namespace OpenSim.Data
  32. {
  33. public static class DBGuid
  34. {
  35. /// <summary>This function converts a value returned from the database in one of the
  36. /// supported formats into a UUID. This function is not actually DBMS-specific right
  37. /// now
  38. ///
  39. /// </summary>
  40. /// <param name="id"></param>
  41. /// <returns></returns>
  42. public static UUID FromDB(object id)
  43. {
  44. if ((id == null) || (id == DBNull.Value))
  45. return UUID.Zero;
  46. if (id.GetType() == typeof(Guid))
  47. return new UUID((Guid)id);
  48. if (id.GetType() == typeof(byte[]))
  49. {
  50. if (((byte[])id).Length == 0)
  51. return UUID.Zero;
  52. else if (((byte[])id).Length == 16)
  53. return new UUID((byte[])id, 0);
  54. }
  55. else if (id.GetType() == typeof(string))
  56. {
  57. if (((string)id).Length == 0)
  58. return UUID.Zero;
  59. else if (((string)id).Length == 36)
  60. return new UUID((string)id);
  61. }
  62. throw new Exception("Failed to convert db value to UUID: " + id.ToString());
  63. }
  64. }
  65. }