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PGSQLMigration.cs 3.7 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 Npgsql;
  28. using System;
  29. using System.Data;
  30. using System.Data.Common;
  31. using System.Reflection;
  32. namespace OpenSim.Data.PGSQL
  33. {
  34. public class PGSQLMigration : Migration
  35. {
  36. public PGSQLMigration(NpgsqlConnection conn, Assembly assem, string type)
  37. : base(conn, assem, type)
  38. {
  39. }
  40. public PGSQLMigration(NpgsqlConnection conn, Assembly assem, string subtype, string type)
  41. : base(conn, assem, subtype, type)
  42. {
  43. }
  44. protected override int FindVersion(DbConnection conn, string type)
  45. {
  46. int version = 0;
  47. NpgsqlConnection lcConn = (NpgsqlConnection)conn;
  48. using (NpgsqlCommand cmd = lcConn.CreateCommand())
  49. {
  50. try
  51. {
  52. cmd.CommandText = "select version from migrations where name = '" + type + "' " +
  53. " order by version desc limit 1"; //Must be
  54. using (NpgsqlDataReader reader = cmd.ExecuteReader())
  55. {
  56. if (reader.Read())
  57. {
  58. version = Convert.ToInt32(reader["version"]);
  59. }
  60. reader.Close();
  61. }
  62. }
  63. catch
  64. {
  65. // Return -1 to indicate table does not exist
  66. return -1;
  67. }
  68. }
  69. return version;
  70. }
  71. protected override void ExecuteScript(DbConnection conn, string[] script)
  72. {
  73. if (!(conn is NpgsqlConnection))
  74. {
  75. base.ExecuteScript(conn, script);
  76. return;
  77. }
  78. foreach (string sql in script)
  79. {
  80. try
  81. {
  82. using (NpgsqlCommand cmd = new NpgsqlCommand(sql, (NpgsqlConnection)conn))
  83. {
  84. cmd.ExecuteNonQuery();
  85. }
  86. }
  87. catch (Exception)
  88. {
  89. throw new Exception(sql);
  90. }
  91. }
  92. }
  93. }
  94. }