mcs/class/FirebirdSql.Data.Firebird/FirebirdSql.Data.Firebird/DbSchema/FbProcedures.cs

   1 /*
   2  *      Firebird ADO.NET Data provider for .NET and Mono
   3  *
   4  *         The contents of this file are subject to the Initial
   5  *         Developer's Public License Version 1.0 (the "License");
   6  *         you may not use this file except in compliance with the
   7  *         License. You may obtain a copy of the License at
   8  *         http://www.firebirdsql.org/index.php?op=doc&id=idpl
   9  *
  10  *         Software distributed under the License is distributed on
  11  *         an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either
  12  *         express or implied. See the License for the specific
  13  *         language governing rights and limitations under the License.
  14  *
  15  *      Copyright (c) 2002, 2005 Carlos Guzman Alvarez
  16  *      All Rights Reserved.
  17  */
  18
  19 using System;
  20 using System.Data;
  21 using System.Globalization;
  22 using System.Text;
  23
  24 namespace FirebirdSql.Data.Firebird.DbSchema
  25 {
  26         internal class FbProcedures : FbDbSchema
  27         {
  28                 #region Constructors
  29
  30                 public FbProcedures() : base("Procedures")
  31                 {
  32                 }
  33
  34                 #endregion
  35
  36                 #region Protected Methods
  37
  38                 protected override StringBuilder GetCommandText(object[] restrictions)
  39                 {
  40                         StringBuilder sql = new StringBuilder();
  41                         StringBuilder where = new StringBuilder();
  42
  43                         sql.Append(
  44                                 @"SELECT " +
  45                                         "null AS PROCEDURE_CATALOG, " +
  46                                         "null AS PROCEDURE_SCHEMA, " +
  47                                         "rdb$procedure_name AS PROCEDURE_NAME, " +
  48                                         "rdb$procedure_inputs AS INPUTS, " +
  49                                         "rdb$procedure_outputs AS OUTPUTS, " +
  50                                         "rdb$procedure_source AS SOURCE, " +
  51                                         "rdb$description AS DESCRIPTION " +
  52                                 "FROM " +
  53                                         "rdb$procedures");
  54
  55                         if (restrictions != null)
  56                         {
  57                                 int index = 0;
  58
  59                                 /* PROCEDURE_CATALOG */
  60                                 if (restrictions.Length >= 1 && restrictions[0] != null)
  61                                 {
  62                                 }
  63
  64                                 /* PROCEDURE_SCHEMA     */
  65                                 if (restrictions.Length >= 2 && restrictions[1] != null)
  66                                 {
  67                                 }
  68
  69                                 /* PROCEDURE_NAME */
  70                                 if (restrictions.Length >= 3 && restrictions[2] != null)
  71                                 {
  72                                         where.AppendFormat(CultureInfo.CurrentCulture, "rdb$procedure_name = @p{0}", index++);
  73                                 }
  74                         }
  75
  76                         if (where.Length > 0)
  77                         {
  78                                 sql.AppendFormat(CultureInfo.CurrentCulture, " WHERE {0} ", where.ToString());
  79                         }
  80
  81                         sql.Append(" ORDER BY rdb$procedure_name");
  82
  83                         return sql;
  84                 }
  85
  86                 protected override DataTable ProcessResult(DataTable schema)
  87                 {
  88                         schema.BeginLoadData();
  89
  90                         foreach (DataRow row in schema.Rows)
  91                         {
  92                                 if (row["INPUTS"] == DBNull.Value)
  93                                 {
  94                                         row["INPUTS"] = 0;
  95                                 }
  96                                 if (row["OUTPUTS"] == DBNull.Value)
  97                                 {
  98                                         row["OUTPUTS"] = 0;
  99                                 }
 100                         }
 101
 102                         schema.EndLoadData();
 103                         schema.AcceptChanges();
 104
 105                         return schema;
 106                 }
 107
 108                 #endregion
 109         }
 110 }