Datei: NDOPackage/NdoUIProviderFactory.cs
Last Commit (946ad0e)
1 | using NDO.UISupport; |
2 | using System; |
3 | using System.Collections.Generic; |
4 | using System.Diagnostics; |
5 | using System.IO; |
6 | using System.Linq; |
7 | using System.Reflection; |
8 | using System.Text; |
9 | using System.Threading.Tasks; |
10 | |
11 | namespace NETDataObjects. NDOVSPackage |
12 | { |
13 | ····internal class NdoUIProviderFactory |
14 | ····{ |
15 | ········private Dictionary<string, IDbUISupport> uiSupportProviders; |
16 | ········private static object lockObject = new object(); |
17 | ········private NdoUIProviderFactory() |
18 | ········{ |
19 | ········} |
20 | |
21 | ········public static NdoUIProviderFactory Instance = new NdoUIProviderFactory(); |
22 | ········public IDbUISupport this[string name] |
23 | ········{ |
24 | ············get |
25 | ············{ |
26 | ················var px = NDOProviderFactory.Instance[""];··// Make sure to fetch the providers first |
27 | |
28 | ················if (this.uiSupportProviders == null) |
29 | ················{ |
30 | ····················FetchProviders(); |
31 | ················} |
32 | |
33 | ················IDbUISupport result; |
34 | ················uiSupportProviders.TryGetValue(name, out result); |
35 | ················return result; |
36 | ············} |
37 | ········} |
38 | |
39 | ········private void FetchProviders() |
40 | ········{ |
41 | ············lock (lockObject) |
42 | ············{ |
43 | ················if (this.uiSupportProviders == null) // double check |
44 | ················{ |
45 | ····················this.uiSupportProviders = new Dictionary<string, IDbUISupport>(); |
46 | ····················string path = Path.GetDirectoryName(GetType().Assembly.Location); |
47 | |
48 | ····················var ifc = typeof(IDbUISupport); |
49 | |
50 | ····················foreach (var fileName in Directory.GetFiles(path, "*UISupport.dll")) |
51 | ····················{ |
52 | ························if (fileName.EndsWith("NDO.UISupport.dll")) |
53 | ····························continue; |
54 | |
55 | ························try |
56 | ························{ |
57 | ····························var assembly = Assembly.LoadFrom(fileName); |
58 | ····························foreach (var type in assembly.ExportedTypes.Where(t => ifc.IsAssignableFrom(t))) |
59 | ····························{ |
60 | ································var p = (IDbUISupport)Activator.CreateInstance(type); |
61 | ································this.uiSupportProviders.Add(p.Name, p); |
62 | ································var provider = NDOProviderFactory.Instance[p.Name]; |
63 | ································if (provider == null) |
64 | ····································Debug.WriteLine($"No NDO provider for UI provider {p.Name}"); |
65 | ································else |
66 | ····································p.Initialize(provider); |
67 | ····························} |
68 | ························} |
69 | ························catch (Exception ex) |
70 | ························{ |
71 | ····························Debug.WriteLine(fileName + ": " + ex.ToString()); |
72 | ························} |
73 | ····················} |
74 | ················} |
75 | ············} |
76 | ········} |
77 | |
78 | ········public string[] Keys |
79 | ········{ |
80 | ············get |
81 | ············{ |
82 | ················if (this.uiSupportProviders == null) |
83 | ····················FetchProviders(); |
84 | |
85 | ················return (from s in this.uiSupportProviders.Keys select s).ToArray(); |
86 | ············} |
87 | ········} |
88 | ····} |
89 | } |
90 |
New Commit (33e9857)
1 | using NDO.UISupport; |
2 | using System; |
3 | using System.Collections.Generic; |
4 | using System.Diagnostics; |
5 | using System.IO; |
6 | using System.Linq; |
7 | using System.Reflection; |
8 | using System.Text; |
9 | using System.Threading.Tasks; |
10 | |
11 | namespace NDOVsPackage |
12 | { |
13 | ····internal class NdoUIProviderFactory |
14 | ····{ |
15 | ········private Dictionary<string, IDbUISupport> uiSupportProviders; |
16 | ········private static object lockObject = new object(); |
17 | ········private NdoUIProviderFactory() |
18 | ········{ |
19 | ········} |
20 | |
21 | ········public static NdoUIProviderFactory Instance = new NdoUIProviderFactory(); |
22 | ········public IDbUISupport this[string name] |
23 | ········{ |
24 | ············get |
25 | ············{ |
26 | ················var px = NDOProviderFactory.Instance[""];··// Make sure to fetch the providers first |
27 | |
28 | ················if (this.uiSupportProviders == null) |
29 | ················{ |
30 | ····················FetchProviders(); |
31 | ················} |
32 | |
33 | ················IDbUISupport result; |
34 | ················uiSupportProviders.TryGetValue(name, out result); |
35 | ················return result; |
36 | ············} |
37 | ········} |
38 | |
39 | ········private void FetchProviders() |
40 | ········{ |
41 | ············lock (lockObject) |
42 | ············{ |
43 | ················if (this.uiSupportProviders == null) // double check |
44 | ················{ |
45 | ····················this.uiSupportProviders = new Dictionary<string, IDbUISupport>(); |
46 | ····················string path = Path.GetDirectoryName(GetType().Assembly.Location); |
47 | |
48 | ····················var ifc = typeof(IDbUISupport); |
49 | |
50 | ····················foreach (var fileName in Directory.GetFiles(path, "*UISupport.dll")) |
51 | ····················{ |
52 | ························if (fileName.EndsWith("NDO.UISupport.dll")) |
53 | ····························continue; |
54 | |
55 | ························try |
56 | ························{ |
57 | ····························var assembly = Assembly.LoadFrom(fileName); |
58 | ····························foreach (var type in assembly.ExportedTypes.Where(t => ifc.IsAssignableFrom(t))) |
59 | ····························{ |
60 | ································var p = (IDbUISupport)Activator.CreateInstance(type); |
61 | ································this.uiSupportProviders.Add(p.Name, p); |
62 | ································var provider = NDOProviderFactory.Instance[p.Name]; |
63 | ································if (provider == null) |
64 | ····································Debug.WriteLine($"No NDO provider for UI provider {p.Name}"); |
65 | ································else |
66 | ····································p.Initialize(provider); |
67 | ····························} |
68 | ························} |
69 | ························catch (Exception ex) |
70 | ························{ |
71 | ····························Debug.WriteLine(fileName + ": " + ex.ToString()); |
72 | ························} |
73 | ····················} |
74 | ················} |
75 | ············} |
76 | ········} |
77 | |
78 | ········public string[] Keys |
79 | ········{ |
80 | ············get |
81 | ············{ |
82 | ················if (this.uiSupportProviders == null) |
83 | ····················FetchProviders(); |
84 | |
85 | ················return (from s in this.uiSupportProviders.Keys select s).ToArray(); |
86 | ············} |
87 | ········} |
88 | ····} |
89 | } |
90 | ··} |
91 | ····} |
92 | } |
93 |