Este proyecto es una aplicación para trabajar con un base de datos Postgresql por el ramo de base de datos. https://cromer.cl/sernatur
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  1. /*
  2. * Copyright 2018-2019 Chris Cromer
  3. *
  4. * Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
  5. *
  6. * 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
  7. *
  8. * 2. 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.
  9. *
  10. * 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
  11. *
  12. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR 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.
  13. */
  14. namespace LibSernatur {
  15. namespace DB {
  16. using Postgres;
  17. using Wrapper;
  18. /**
  19. * The Descuento class based on the database table
  20. */
  21. public class Descuento : Object {
  22. /**
  23. * The id of the discount
  24. */
  25. public uint id_descuento { get; set; default = 0; }
  26. /**
  27. * The description of the discount
  28. */
  29. public string descripcion_descuento { get; set; default = ""; }
  30. /**
  31. * The percentage of the discount
  32. */
  33. public float porcentaje { get; set; default = 0; }
  34. /**
  35. * Initialize the Descuento class
  36. * @param id_descuento The id of the discount
  37. * @param descripcion_descuento The description of the discount
  38. * @param porcentaje The percentage of the discount
  39. */
  40. public Descuento (uint id_descuento = 0, string descripcion_descuento = "", float porcentaje = 0) {
  41. this.id_descuento = id_descuento;
  42. this.descripcion_descuento = descripcion_descuento;
  43. this.porcentaje = porcentaje;
  44. }
  45. /**
  46. * Get all tuples and fields from database
  47. * @param conn.db.The database conn.db.ction to use
  48. * @return Returns a list of Descuento
  49. */
  50. public static List<Descuento> get_all_descuentos (Connection conn) {
  51. var res = conn.db.exec ("
  52. SELECT id_descuento, descripcion_descuento, porcentaje FROM descuento
  53. ");
  54. if (res.get_status () != ExecStatus.TUPLES_OK) {
  55. #if DEBUG
  56. error (conn.db.get_error_message ());
  57. #else
  58. warning (conn.db.get_error_message ());
  59. return new List<Descuento> ();
  60. #endif
  61. }
  62. var wra = new ResultWrapper (res);
  63. List<Descuento> list = new List<Descuento> ();
  64. int n = res.get_n_tuples ();
  65. for (int i = 0; i < n; i++) {
  66. try {
  67. var descuento = new Descuento (wra.get_int_n (i, "id_descuento"),
  68. wra.get_string_n (i, "descripcion_descuento"),
  69. wra.get_float_n (i, "porcentaje")
  70. );
  71. list.append (descuento);
  72. }
  73. catch (Error e) {
  74. #if DEBUG
  75. error (e.message);
  76. #else
  77. warning (e.message);
  78. #endif
  79. }
  80. }
  81. return list;
  82. }
  83. }
  84. }
  85. }