extras/MonoDevelop.Database/MonoDevelop.Database.Sql/QueryService.cs

   1 //
   2 // Authors:
   3 //   Christian Hergert <chris@mosaix.net>
   4 //   Ben Motmans  <ben.motmans@gmail.com>
   5 //
   6 // Copyright (C) 2005 Christian Hergert
   7 // Copyright (c) 2007 Ben Motmans
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining a copy
  10 // of this software and associated documentation files (the "Software"), to deal
  11 // in the Software without restriction, including without limitation the rights
  12 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  13 // copies of the Software, and to permit persons to whom the Software is
  14 // furnished to do so, subject to the following conditions:
  15 //
  16 // The above copyright notice and this permission notice shall be included in
  17 // all copies or substantial portions of the Software.
  18 //
  19 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  22 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  23 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  24 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  25 // THE SOFTWARE.
  26 //
  27
  28 using System;
  29 using System.Data;
  30 using System.Threading;
  31 using System.Collections.Generic;
  32 using Mono.Addins;
  33 using MonoDevelop.Database.Sql;
  34 using MonoDevelop.Core;
  35 using MonoDevelop.Core.Gui;
  36
  37 namespace MonoDevelop.Database.Sql
  38 {
  39         public delegate void DatabaseConnectionContextCallback (DatabaseConnectionContext context, bool connected, object state);
  40
  41         public static class QueryService
  42         {
  43                 public static void RaiseException (Exception exception)
  44                 {
  45                         MessageService.ShowException (exception);
  46                         LoggingService.LogError ("Database Exception", exception);
  47                 }
  48
  49                 public static void RaiseException (string message, Exception exception)
  50                 {
  51                         MessageService.ShowException (exception, message);
  52                         LoggingService.LogError ("Database Exception", exception);
  53                 }
  54
  55                 //TODO: show errors
  56                 public static void EnsureConnection (DatabaseConnectionContext context, DatabaseConnectionContextCallback callback, object state)
  57                 {
  58                         if (context == null)
  59                                 throw new ArgumentNullException ("context");
  60                         if (callback == null)
  61                                 throw new ArgumentNullException ("callback");
  62
  63                         IConnectionPool pool = context.ConnectionPool;
  64                         if (pool.IsInitialized) {
  65                                 callback (context, true, state);
  66                                 return;
  67                         }
  68
  69                         IDbFactory fac = DbFactoryService.GetDbFactory (context.ConnectionSettings);
  70                         //FIXME: connection settings dialog
  71                         //bool requiresPassword = fac.GetCapabilities ("ConnectionSettings", SchemaActions.Schema) == (int)ConnectionSettingsCapabilities.Password;
  72                         bool requiresPassword = true;
  73
  74                         if (!context.ConnectionSettings.SavePassword && String.IsNullOrEmpty (context.ConnectionSettings.Password) && requiresPassword) {
  75                                 string password = MessageService.GetPassword (
  76                                         AddinCatalog.GetString ("Please enter the password for connection '{0}'",
  77                                         context.ConnectionSettings.Name),
  78                                         AddinCatalog.GetString ("Enter Password")
  79                                 );
  80
  81                                 if (password == null) {
  82                                         callback (context, false, state);
  83                                         return;
  84                                 } else {
  85                                         context.ConnectionSettings.Password = password;
  86                                 }
  87                         }
  88
  89                         EnsureConnectionState internalState = new EnsureConnectionState (context, callback, state);
  90                         ThreadPool.QueueUserWorkItem (new WaitCallback (EnsureConnectionThreaded), internalState);
  91                 }
  92
  93                 private static void EnsureConnectionThreaded (object obj)
  94                 {
  95                         EnsureConnectionState internalState = obj as EnsureConnectionState;
  96                         IConnectionPool pool = internalState.ConnectionContext.ConnectionPool;
  97
  98                         try {
  99                                 bool connected = pool.Initialize ();
 100                                 DispatchService.GuiDispatch (delegate () {
 101                                         internalState.Callback (internalState.ConnectionContext, connected, internalState.State);
 102                                 });
 103                         } catch (Exception e) {
 104                                 LoggingService.LogDebug (e.ToString ());
 105
 106                                 DispatchService.GuiDispatch (delegate () {
 107                                         internalState.Callback (internalState.ConnectionContext, false, internalState.State);
 108                                 });
 109                         }
 110                 }
 111         }
 112
 113         internal class EnsureConnectionState
 114         {
 115                 public object State;
 116                 public DatabaseConnectionContext ConnectionContext;
 117                 public DatabaseConnectionContextCallback Callback;
 118
 119                 public EnsureConnectionState (DatabaseConnectionContext context, DatabaseConnectionContextCallback callback, object state)
 120                 {
 121                         ConnectionContext = context;
 122                         Callback = callback;
 123                         State = state;
 124                 }
 125         }
 126 }