blob: fbcd2f5895d2bb4228525ba9e336d7296def123d (
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
|
using MediaBrowser.Common.Extensions;
using MediaBrowser.Model.Tasks;
using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.Serialization;
using System.Threading;
using System.Threading.Tasks;
namespace MediaBrowser.Controller.Entities
{
/// <summary>
/// Specialized Folder class that points to a subset of the physical folders in the system.
/// It is created from the user-specific folders within the system root
/// </summary>
public class CollectionFolder : Folder, ICollectionFolder
{
/// <summary>
/// Gets a value indicating whether this instance is virtual folder.
/// </summary>
/// <value><c>true</c> if this instance is virtual folder; otherwise, <c>false</c>.</value>
[IgnoreDataMember]
public override bool IsVirtualFolder
{
get
{
return true;
}
}
/// <summary>
/// Allow different display preferences for each collection folder
/// </summary>
/// <value>The display prefs id.</value>
public override Guid DisplayPrefsId
{
get
{
return Id;
}
}
// Cache this since it will be used a lot
/// <summary>
/// The null task result
/// </summary>
private static readonly Task NullTaskResult = Task.FromResult<object>(null);
/// <summary>
/// Compare our current children (presumably just read from the repo) with the current state of the file system and adjust for any changes
/// ***Currently does not contain logic to maintain items that are unavailable in the file system***
/// </summary>
/// <param name="progress">The progress.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <param name="recursive">if set to <c>true</c> [recursive].</param>
/// <returns>Task.</returns>
protected override Task ValidateChildrenInternal(IProgress<double> progress, CancellationToken cancellationToken, bool? recursive = null)
{
//we don't directly validate our children
//but we do need to clear out the index cache...
IndexCache = new ConcurrentDictionary<string, List<BaseItem>>(StringComparer.OrdinalIgnoreCase);
return NullTaskResult;
}
/// <summary>
/// Our children are actually just references to the ones in the physical root...
/// </summary>
/// <value>The actual children.</value>
protected override ConcurrentBag<BaseItem> ActualChildren
{
get
{
IEnumerable<Guid> folderIds;
try
{
// Accessing ResolveArgs could involve file system access
folderIds = ResolveArgs.PhysicalLocations.Select(f => (f.GetMBId(typeof(Folder))));
}
catch (IOException ex)
{
Logger.ErrorException("Error creating FolderIds for {0}", ex, Path);
folderIds = new Guid[] {};
}
var ourChildren =
Kernel.Instance.RootFolder.Children.OfType<Folder>()
.Where(i => folderIds.Contains(i.Id))
.SelectMany(c => c.Children);
return new ConcurrentBag<BaseItem>(ourChildren);
}
}
}
}
|
