aboutsummaryrefslogtreecommitdiffstatshomepage
path: root/OpenSim/Framework/Communications/Cache/InventoryFolderImpl.cs
blob: 61343a024ff7587d6aa76af199d64466fa5c9a7f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
/*
 * Copyright (c) Contributors, http://opensimulator.org/
 * See CONTRIBUTORS.TXT for a full list of copyright holders.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * 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.
 *     * Neither the name of the OpenSim Project nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``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 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.
 */

using System;
using System.Collections.Generic;
using OpenMetaverse;
//using System.Reflection;

//using log4net;

namespace OpenSim.Framework.Communications.Cache
{
    public class InventoryFolderImpl : InventoryFolderBase
    {
        //private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);

        public static readonly string PATH_DELIMITER = "/";

        /// <summary>
        /// Items that are contained in this folder
        /// </summary>
        public Dictionary<UUID, InventoryItemBase> Items = new Dictionary<UUID, InventoryItemBase>();

        /// <summary>
        /// Child folders that are contained in this folder
        /// </summary>
        public Dictionary<UUID, InventoryFolderImpl> SubFolders = new Dictionary<UUID, InventoryFolderImpl>();

        // Constructors
        public InventoryFolderImpl(InventoryFolderBase folderbase)
        {
            Owner = folderbase.Owner;
            ID = folderbase.ID;
            Name = folderbase.Name;
            ParentID = folderbase.ParentID;
            Type = folderbase.Type;
            Version = folderbase.Version;
        }

        public InventoryFolderImpl()
        {
        }

        /// <summary>
        /// Create a new subfolder.  This exists only in the cache.
        /// </summary>
        /// <param name="folderID"></param>
        /// <param name="folderName"></param>
        /// <param name="type"></param>
        /// <returns>The newly created subfolder.  Returns null if the folder already exists</returns>
        public InventoryFolderImpl CreateChildFolder(UUID folderID, string folderName, ushort type)
        {
            lock (SubFolders)
            {
                if (!SubFolders.ContainsKey(folderID))
                {
                    InventoryFolderImpl subFold = new InventoryFolderImpl();
                    subFold.Name = folderName;
                    subFold.ID = folderID;
                    subFold.Type = (short) type;
                    subFold.ParentID = this.ID;
                    subFold.Owner = Owner;
                    SubFolders.Add(subFold.ID, subFold);

                    return subFold;
                }
            }

            return null;
        }

        /// <summary>
        /// Delete all the folders and items in this folder.
        /// </summary>
        public void Purge()
        {
            foreach (InventoryFolderImpl folder in SubFolders.Values)
            {
                folder.Purge();
            }

            SubFolders.Clear();
            Items.Clear();
        }

        /// <summary>
        /// Returns the item if it exists in this folder or in any of this folder's descendant folders
        /// </summary>
        /// <param name="itemID"></param>
        /// <returns>null if the item is not found</returns>
        public InventoryItemBase FindItem(UUID itemID)
        {
            lock (Items)
            {
                if (Items.ContainsKey(itemID))
                {
                    return Items[itemID];
                }
            }

            lock (SubFolders)
            {
                foreach (InventoryFolderImpl folder in SubFolders.Values)
                {
                    InventoryItemBase item = folder.FindItem(itemID);

                    if (item != null)
                    {
                        return item;
                    }
                }
            }

            return null;
        }

        /// <summary>
        /// Deletes an item if it exists in this folder or any children
        /// </summary>
        /// <param name="folderID"></param>
        /// <returns></returns>
        public bool DeleteItem(UUID itemID)
        {
            bool found = false;

            lock (Items)
            {
                if (Items.ContainsKey(itemID))
                {
                    Items.Remove(itemID);
                    return true;
                }
            }

            lock (SubFolders)
            {
                foreach (InventoryFolderImpl folder in SubFolders.Values)
                {
                    found = folder.DeleteItem(itemID);

                    if (found == true)
                    {
                        break;
                    }
                }
            }

            return found;
        }

        /// <summary>
        /// Returns the folder requested if it is this folder or is a descendent of this folder.  The search is depth
        /// first.
        /// </summary>
        /// <returns>The requested folder if it exists, null if it does not.</returns>
        public InventoryFolderImpl FindFolder(UUID folderID)
        {
            if (folderID == ID)
                return this;

            lock (SubFolders)
            {
                foreach (InventoryFolderImpl folder in SubFolders.Values)
                {
                    InventoryFolderImpl returnFolder = folder.FindFolder(folderID);

                    if (returnFolder != null)
                        return returnFolder;
                }
            }

            return null;
        }

        /// <summary>
        /// Find a folder given a PATH_DELIMITOR delimited path starting from this folder
        ///
        /// This method does not handle paths that contain multiple delimitors
        ///
        /// FIXME: We do not yet handle situations where folders have the same name.  We could handle this by some
        /// XPath like expression
        ///
        /// FIXME: Delimitors which occur in names themselves are not currently escapable.
        /// </summary>
        /// <param name="path">
        /// The path to the required folder.  It this is empty then this folder itself is returned.
        /// </param>
        /// <returns>null if the folder is not found</returns>
        public InventoryFolderImpl FindFolderByPath(string path)
        {
            if (path == string.Empty)
                return this;

            string[] components = path.Split(new string[] { PATH_DELIMITER }, 2, StringSplitOptions.None);

            lock (SubFolders)
            {
                foreach (InventoryFolderImpl folder in SubFolders.Values)
                {
                    if (folder.Name == components[0])
                        if (components.Length > 1)
                            return folder.FindFolderByPath(components[1]);
                        else
                            return folder;
                }
            }

            // We didn't find a folder with the given name
            return null;
        }

        /// <summary>
        /// Find an item given a PATH_DELIMITOR delimited path starting from this folder.
        ///
        /// This method does not handle paths that contain multiple delimitors
        ///
        /// FIXME: We do not yet handle situations where folders or items have the same name.  We could handle this by some
        /// XPath like expression
        ///
        /// FIXME: Delimitors which occur in names themselves are not currently escapable.
        /// </summary>
        /// <param name="path">
        /// The path to the required item.
        /// </param>
        /// <returns>null if the item is not found</returns>
        public InventoryItemBase FindItemByPath(string path)
        {
            string[] components = path.Split(new string[] { PATH_DELIMITER }, 2, StringSplitOptions.None);

            if (components.Length == 1)
            {
                lock (Items)
                {
                    foreach (InventoryItemBase item in Items.Values)
                    {
                        if (item.Name == components[0])
                            return item;
                    }
                }
            }
            else
            {
                lock (SubFolders)
                {
                    foreach (InventoryFolderImpl folder in SubFolders.Values)
                    {
                        if (folder.Name == components[0])
                            return folder.FindItemByPath(components[1]);
                    }
                }
            }

            // We didn't find an item or intermediate folder with the given name
            return null;
        }

        /// <summary>
        /// Return a copy of the list of child items in this folder
        /// </summary>
        public List<InventoryItemBase> RequestListOfItems()
        {
            List<InventoryItemBase> itemList = new List<InventoryItemBase>();

            lock (Items)
            {
                foreach (InventoryItemBase item in Items.Values)
                {
                    itemList.Add(item);
                }
            }

            //m_log.DebugFormat("[INVENTORY FOLDER IMPL]: Found {0} items", itemList.Count);

            return itemList;
        }

        /// <summary>
        /// Return a copy of the list of child folders in this folder.
        /// </summary>
        public List<InventoryFolderBase> RequestListOfFolders()
        {
            List<InventoryFolderBase> folderList = new List<InventoryFolderBase>();

            lock (SubFolders)
            {
                foreach (InventoryFolderBase folder in SubFolders.Values)
                {
                    folderList.Add(folder);
                }
            }

            return folderList;
        }

        public int TotalCount
        {
            get
            {
                int total = Items.Count;

                foreach (InventoryFolderImpl folder in SubFolders.Values)
                {
                    total = total + folder.TotalCount;
                }

                return total;
            }
        }
    }
}