InversionOfControl/Castle.MicroKernel/ModelBuilder/Inspectors/LifecycleModelInspector.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.MicroKernel.ModelBuilder.Inspectors
  16 {
  17         using System;
  18         using System.ComponentModel;
  19
  20         using Castle.Core;
  21
  22         using Castle.MicroKernel.LifecycleConcerns;
  23
  24         /// <summary>
  25         /// Inspects the type looking for interfaces that constitutes
  26         /// lifecycle interfaces, defined in the Castle.Model namespace.
  27         /// </summary>
  28         [Serializable]
  29         public class LifecycleModelInspector : IContributeComponentModelConstruction
  30         {
  31                 public LifecycleModelInspector()
  32                 {
  33                 }
  34
  35                 /// <summary>
  36                 /// Checks if the type implements <see cref="IInitializable"/> and or
  37                 /// <see cref="IDisposable"/> interfaces.
  38                 /// </summary>
  39                 /// <param name="kernel"></param>
  40                 /// <param name="model"></param>
  41                 public virtual void ProcessModel(IKernel kernel, ComponentModel model)
  42                 {
  43                         if (model == null)
  44                         {
  45                                 throw new ArgumentNullException("model");
  46                         }
  47                         if (typeof (IInitializable).IsAssignableFrom(model.Implementation))
  48                         {
  49                                 model.LifecycleSteps.Add( LifecycleStepType.Commission, InitializationConcern.Instance );
  50                         }
  51                         if (typeof (ISupportInitialize).IsAssignableFrom(model.Implementation))
  52                         {
  53                                 model.LifecycleSteps.Add( LifecycleStepType.Commission, SupportInitializeConcern.Instance );
  54                         }
  55                         if (typeof (IDisposable).IsAssignableFrom(model.Implementation))
  56                         {
  57                                 model.LifecycleSteps.Add( LifecycleStepType.Decommission, DisposalConcern.Instance );
  58                         }
  59                 }
  60         }
  61 }