beagled/IndexingServiceQueryable/IndexingServiceQueryable.cs

   1 //
   2 // IndexingServiceQueryable.cs
   3 //
   4 // Copyright (C) 2005 Novell, Inc.
   5 //
   6
   7 //
   8 // Permission is hereby granted, free of charge, to any person obtaining a
   9 // copy of this software and associated documentation files (the "Software"),
  10 // to deal in the Software without restriction, including without limitation
  11 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12 // and/or sell copies of the Software, and to permit persons to whom the
  13 // Software is furnished to do so, subject to the following conditions:
  14 //
  15 // The above copyright notice and this permission notice shall be included in
  16 // all copies or substantial portions of the Software.
  17 //
  18 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  21 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  23 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  24 // DEALINGS IN THE SOFTWARE.
  25 //
  26
  27 using System;
  28 using System.Collections;
  29
  30 using Beagle.Daemon;
  31 using Beagle.Util;
  32
  33 namespace Beagle.Daemon.IndexingServiceQueryable {
  34
  35         [QueryableFlavor (Name="IndexingService", Domain=QueryDomain.Local, RequireInotify=false)]
  36         public class IndexingServiceQueryable : LuceneQueryable {
  37
  38                 public IndexingServiceQueryable () : base ("IndexingServiceIndex")
  39                 {
  40                         Server.RegisterRequestMessageHandler (typeof (IndexingServiceRequest), new Server.RequestMessageHandler (HandleMessage));
  41                 }
  42
  43                 private class IndexableGenerator : IIndexableGenerator {
  44                         private IEnumerator to_add_enumerator;
  45                         private int count, done_count = 0;
  46
  47                         public IndexableGenerator (ICollection to_add)
  48                         {
  49                                 this.count = to_add.Count;
  50                                 this.to_add_enumerator = to_add.GetEnumerator ();
  51                         }
  52
  53                         public Indexable GetNextIndexable ()
  54                         {
  55                                 return to_add_enumerator.Current as Indexable;
  56                         }
  57
  58                         public bool HasNextIndexable ()
  59                         {
  60                                 ++done_count;
  61                                 return to_add_enumerator.MoveNext ();
  62                         }
  63
  64                         public string StatusName {
  65                                 get { return String.Format ("IndexingService: {0} of {1}", done_count, count); }
  66                         }
  67                 }
  68
  69                 private ResponseMessage HandleMessage (RequestMessage msg)
  70                 {
  71                         IndexingServiceRequest isr = (IndexingServiceRequest) msg;
  72
  73                         foreach (Uri uri in isr.ToRemove) {
  74                                 Scheduler.Task task = NewRemoveTask (uri);
  75                                 ThisScheduler.Add (task);
  76                         }
  77
  78                         // FIXME: There should be a way for the request to control the
  79                         // scheduler priority of the task.
  80
  81                         if (isr.ToAdd.Count > 0) {
  82                                 IIndexableGenerator ind_gen = new IndexableGenerator (isr.ToAdd);
  83                                 Scheduler.Task task = NewAddTask (ind_gen);
  84                                 task.Priority = Scheduler.Priority.Immediate;
  85                                 ThisScheduler.Add (task);
  86                         }
  87
  88                         // FIXME: There should be an asynchronous response  (fired by a Scheduler.Hook)
  89                         // that fires when all of the items have been added to the index.
  90
  91                         // No response
  92                         return new EmptyResponse ();
  93                 }
  94
  95         }
  96
  97 }