InversionOfControl/Castle.MicroKernel/Lifestyle/PoolableLifestyleManager.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.Lifestyle
  16 {
  17         using System;
  18         using Castle.Core;
  19         using Castle.MicroKernel.Lifestyle.Pool;
  20
  21         /// <summary>
  22         /// Implements a Poolable Lifestyle Manager.
  23         /// </summary>
  24         [Serializable]
  25         public class PoolableLifestyleManager : AbstractLifestyleManager
  26         {
  27                 private IPool pool;
  28                 private int initialSize;
  29                 private int maxSize;
  30
  31                 public PoolableLifestyleManager(int initialSize, int maxSize)
  32                 {
  33                         this.initialSize = initialSize;
  34                         this.maxSize = maxSize;
  35                 }
  36
  37                 public override void Init(IComponentActivator componentActivator, IKernel kernel, ComponentModel model)
  38                 {
  39                         base.Init(componentActivator, kernel, model);
  40
  41                         pool = CreatePool(initialSize, maxSize);
  42                 }
  43
  44                 public override object Resolve(CreationContext context)
  45                 {
  46                         return pool.Request(context);
  47                 }
  48
  49                 public override void Release(object instance)
  50                 {
  51                         pool.Release(instance);
  52                 }
  53
  54                 public override void Dispose()
  55                 {
  56                         pool.Dispose();
  57                 }
  58
  59                 protected IPool CreatePool(int initialSize, int maxSize)
  60                 {
  61                         if (!Kernel.HasComponent(typeof(IPoolFactory)))
  62                         {
  63                                 Kernel.AddComponent("castle.internal.poolfactory",
  64                                                     typeof(IPoolFactory), typeof(DefaultPoolFactory));
  65                         }
  66
  67                         IPoolFactory factory = Kernel[typeof(IPoolFactory)] as IPoolFactory;
  68
  69                         return factory.Create(initialSize, maxSize, ComponentActivator);
  70                 }
  71         }
  72 }