Core/Castle.Core/Model/InterceptorReference.cs

   1 // Copyright 2004-2008 Castle Project - http://www.castleproject.org/
   2 //
   3 // Licensed under the Apache License, Version 2.0 (the "License");
   4 // you may not use this file except in compliance with the License.
   5 // You may obtain a copy of the License at
   6 //
   7 //     http://www.apache.org/licenses/LICENSE-2.0
   8 //
   9 // Unless required by applicable law or agreed to in writing, software
  10 // distributed under the License is distributed on an "AS IS" BASIS,
  11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 // See the License for the specific language governing permissions and
  13 // limitations under the License.
  14
  15 namespace Castle.Core
  16 {
  17         using System;
  18
  19         public enum InterceptorReferenceType
  20         {
  21                 Interface,
  22                 Key
  23         }
  24
  25         /// <summary>
  26         /// Represents an reference to a Interceptor component.
  27         /// </summary>
  28         [Serializable]
  29         public class InterceptorReference : IEquatable<InterceptorReference>
  30         {
  31                 private readonly InterceptorReferenceType refType;
  32                 private readonly Type serviceType;
  33                 private readonly String componentKey;
  34
  35                 /// <summary>
  36                 /// Initializes a new instance of the <see cref="InterceptorReference"/> class.
  37                 /// </summary>
  38                 /// <param name="componentKey">The component key.</param>
  39                 public InterceptorReference(String componentKey)
  40                 {
  41                         if (componentKey == null)
  42                         {
  43                                 throw new ArgumentNullException("componentKey cannot be null");
  44                         }
  45
  46                         refType = InterceptorReferenceType.Key;
  47                         this.componentKey = componentKey;
  48                 }
  49
  50                 /// <summary>
  51                 /// Initializes a new instance of the <see cref="InterceptorReference"/> class.
  52                 /// </summary>
  53                 /// <param name="serviceType">Type of the service.</param>
  54                 public InterceptorReference(Type serviceType)
  55                 {
  56                         if (serviceType == null)
  57                         {
  58                                 throw new ArgumentNullException("'serviceType' cannot be null");
  59                         }
  60
  61                         refType = InterceptorReferenceType.Interface;
  62                         this.serviceType = serviceType;
  63                 }
  64
  65                 /// <summary>
  66                 /// Gets the type of the service.
  67                 /// </summary>
  68                 /// <value>The type of the service.</value>
  69                 public Type ServiceType
  70                 {
  71                         get { return serviceType; }
  72                 }
  73
  74                 /// <summary>
  75                 /// Gets the interceptor component key.
  76                 /// </summary>
  77                 /// <value>The component key.</value>
  78                 public String ComponentKey
  79                 {
  80                         get { return componentKey; }
  81                 }
  82
  83                 /// <summary>
  84                 /// Gets the type of the reference.
  85                 /// </summary>
  86                 /// <value>The type of the reference.</value>
  87                 public InterceptorReferenceType ReferenceType
  88                 {
  89                         get { return refType; }
  90                 }
  91
  92                 /// <summary>
  93                 /// Gets an <see cref="InterceptorReference"/> for the component key.
  94                 /// </summary>
  95                 /// <param name="key">The component key.</param>
  96                 /// <returns>The <see cref="InterceptorReference"/></returns>
  97                 public static InterceptorReference ForKey(String key)
  98                 {
  99                         return new InterceptorReference(key);
 100                 }
 101
 102                 /// <summary>
 103                 /// Gets an <see cref="InterceptorReference"/> for the service.
 104                 /// </summary>
 105                 /// <param name="service">The service.</param>
 106                 /// <returns>The <see cref="InterceptorReference"/></returns>
 107                 public static InterceptorReference ForType(Type service)
 108                 {
 109                         return new InterceptorReference(service);
 110                 }
 111
 112                 /// <summary>
 113                 /// Gets an <see cref="InterceptorReference"/> for the service.
 114                 /// </summary>
 115                 /// <typeparam name="T">The service type.</typeparam>
 116                 /// <returns>The <see cref="InterceptorReference"/></returns>
 117                 public static InterceptorReference ForType<T>()
 118                 {
 119                         return new InterceptorReference(typeof(T));
 120                 }
 121
 122                 public bool Equals(InterceptorReference interceptorReference)
 123                 {
 124                         if (interceptorReference == null) return false;
 125                         if (!Equals(refType, interceptorReference.refType)) return false;
 126                         if (!Equals(serviceType, interceptorReference.serviceType)) return false;
 127                         if (!Equals(componentKey, interceptorReference.componentKey)) return false;
 128                         return true;
 129                 }
 130
 131                 public override bool Equals(object obj)
 132                 {
 133                         if (ReferenceEquals(this, obj)) return true;
 134                         return Equals(obj as InterceptorReference);
 135                 }
 136
 137                 public override int GetHashCode()
 138                 {
 139                         int result = refType.GetHashCode();
 140                         result = 29*result + (serviceType != null ? serviceType.GetHashCode() : 0);
 141                         result = 29*result + (componentKey != null ? componentKey.GetHashCode() : 0);
 142                         return result;
 143                 }
 144         }
 145 }