Core/Castle.Core/Model/DependencyModel.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 DependencyType
  20         {
  21                 Service,
  22                 Parameter,
  23                 ServiceOverride
  24         }
  25
  26         /// <summary>
  27         /// Represents a dependency (other component or a
  28         /// fixed value available through external configuration).
  29         /// </summary>
  30         [Serializable]
  31         public class DependencyModel
  32         {
  33                 private String dependencyKey;
  34                 private Type targetType;
  35                 private bool isOptional;
  36                 private DependencyType dependencyType;
  37
  38                 /// <summary>
  39                 /// Initializes a new instance of the <see cref="DependencyModel"/> class.
  40                 /// </summary>
  41                 /// <param name="type">The type.</param>
  42                 /// <param name="dependencyKey">The dependency key.</param>
  43                 /// <param name="targetType">Type of the target.</param>
  44                 /// <param name="isOptional">if set to <c>true</c> [is optional].</param>
  45                 public DependencyModel(DependencyType type, String dependencyKey,
  46                                        Type targetType, bool isOptional)
  47                 {
  48                         dependencyType = type;
  49                         this.dependencyKey = dependencyKey;
  50                         this.targetType = targetType;
  51                         this.isOptional = isOptional;
  52                 }
  53
  54                 /// <summary>
  55                 /// Gets or sets the type of the dependency.
  56                 /// </summary>
  57                 /// <value>The type of the dependency.</value>
  58                 public DependencyType DependencyType
  59                 {
  60                         get { return dependencyType; }
  61                         set { dependencyType = value; }
  62                 }
  63
  64                 /// <summary>
  65                 /// Gets or sets the dependency key.
  66                 /// </summary>
  67                 /// <value>The dependency key.</value>
  68                 public String DependencyKey
  69                 {
  70                         get { return dependencyKey; }
  71                         set { dependencyKey = value; }
  72                 }
  73
  74                 /// <summary>
  75                 /// Gets the type of the target.
  76                 /// </summary>
  77                 /// <value>The type of the target.</value>
  78                 public Type TargetType
  79                 {
  80                         get { return targetType; }
  81                 }
  82
  83                 /// <summary>
  84                 /// Gets or sets whether this dependency is optional.
  85                 /// </summary>
  86                 /// <value>
  87                 ///     <c>true</c> if this dependency is optional; otherwise, <c>false</c>.
  88                 /// </value>
  89                 public bool IsOptional
  90                 {
  91                         get { return isOptional; }
  92                         set { isOptional = value; }
  93                 }
  94
  95                 /// <summary>
  96                 /// Returns a <see cref="T:System.String"/> that represents the current <see cref="T:System.Object"/>.
  97                 /// </summary>
  98                 /// <returns>
  99                 /// A <see cref="T:System.String"/> that represents the current <see cref="T:System.Object"/>.
 100                 /// </returns>
 101                 public override string ToString()
 102                 {
 103                         return string.Format("{0} dependency '{1}' type '{2}'",
 104                                              DependencyType, dependencyKey, TargetType);
 105                 }
 106
 107                 /// <summary>
 108                 /// Serves as a hash function for a particular type, suitable
 109                 /// for use in hashing algorithms and data structures like a hash table.
 110                 /// </summary>
 111                 /// <returns>
 112                 /// A hash code for the current <see cref="T:System.Object"/>.
 113                 /// </returns>
 114                 public override int GetHashCode()
 115                 {
 116                         int result = dependencyKey.GetHashCode();
 117                         result += 37 ^ targetType.GetHashCode();
 118                         result += 37 ^ isOptional.GetHashCode();
 119                         result += 37 ^ dependencyType.GetHashCode();
 120                         return result;
 121                 }
 122
 123                 /// <summary>
 124                 /// Determines whether the specified <see cref="T:System.Object"/> is equal to the current <see cref="T:System.Object"/>.
 125                 /// </summary>
 126                 /// <param name="obj">The <see cref="T:System.Object"/> to compare with the current <see cref="T:System.Object"/>.</param>
 127                 /// <returns>
 128                 ///     <see langword="true"/> if the specified <see cref="T:System.Object"/> is equal to the
 129                 /// current <see cref="T:System.Object"/>; otherwise, <see langword="false"/>.
 130                 /// </returns>
 131                 public override bool Equals(object obj)
 132                 {
 133                         if (this == obj) return true;
 134                         DependencyModel dependencyModel = obj as DependencyModel;
 135                         if (dependencyModel == null) return false;
 136                         if (!Equals(dependencyKey, dependencyModel.dependencyKey)) return false;
 137                         if (!Equals(targetType, dependencyModel.targetType)) return false;
 138                         if (!Equals(isOptional, dependencyModel.isOptional)) return false;
 139                         if (!Equals(dependencyType, dependencyModel.dependencyType)) return false;
 140                         return true;
 141                 }
 142         }
 143 }