File: LinkDescriptor.cs

package info (click to toggle)
mono 4.6.2.7+dfsg-1
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 778,148 kB
  • ctags: 914,052
  • sloc: cs: 5,779,509; xml: 2,773,713; ansic: 432,645; sh: 14,749; makefile: 12,361; perl: 2,488; python: 1,434; cpp: 849; asm: 531; sql: 95; sed: 16; php: 1
file content (89 lines) | stat: -rw-r--r-- 2,690 bytes parent folder | download | duplicates (2)
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
//Copyright 2010 Microsoft Corporation
//
//Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. 
//You may obtain a copy of the License at 
//
//http://www.apache.org/licenses/LICENSE-2.0 
//
//Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an 
//"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
//See the License for the specific language governing permissions and limitations under the License.


namespace System.Data.Services.Client
{
    using System.Diagnostics;

    [DebuggerDisplay("State = {state}")]
    public sealed class LinkDescriptor : Descriptor
    {
        #region Fields

        internal static readonly System.Collections.Generic.IEqualityComparer<LinkDescriptor> EquivalenceComparer = new Equivalent();

        private object source;

        private string sourceProperty;

        private object target;

        #endregion
        
        internal LinkDescriptor(object source, string sourceProperty, object target)
            : this(source, sourceProperty, target,  EntityStates.Unchanged)
        {
        }

        internal LinkDescriptor(object source, string sourceProperty, object target, EntityStates state)
            : base(state)
        {
            this.source = source;
            this.sourceProperty = sourceProperty;
            this.target = target;
        }

#region Public Properties

        public object Target
        {
            get { return this.target; }
        }

        public object Source
        {
            get { return this.source; }
        }

        public string SourceProperty
        {
            get { return this.sourceProperty; }
        }

#endregion
        
        internal override bool IsResource
        {
            get { return false; }
        }

        internal bool IsEquivalent(object src, string srcPropName, object targ)
        {
            return (this.source == src &&
                this.target == targ &&
                this.sourceProperty == srcPropName);
        }

        private sealed class Equivalent : System.Collections.Generic.IEqualityComparer<LinkDescriptor>
        {
            public bool Equals(LinkDescriptor x, LinkDescriptor y)
            {
                return x.IsEquivalent(y.source, y.sourceProperty, y.target);
            }

            public int GetHashCode(LinkDescriptor obj)
            {
                return obj.Source.GetHashCode() ^ ((null != obj.Target) ? obj.Target.GetHashCode() : 0) ^ obj.SourceProperty.GetHashCode();
            }
        }
    }
}