Facilities/BatchRegistration/Castle.Facilities.BatchRegistration/BatchRegistrationFacility.cs

   1 // Copyright 2004-2007 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.Facilities.BatchRegistration
  16 {
  17         using System;
  18         using System.Configuration;
  19
  20         using Castle.Core.Configuration;
  21
  22         using Castle.MicroKernel;
  23         using Castle.MicroKernel.Facilities;
  24
  25
  26         public class BatchRegistrationFacility : AbstractFacility
  27         {
  28                 protected override void Init()
  29                 {
  30                         if (FacilityConfig == null) return;
  31
  32                         foreach(IConfiguration config in FacilityConfig.Children)
  33                         {
  34                                 if ("assemblyBatch".Equals(config.Name))
  35                                 {
  36                                         AddComponents(config);
  37                                 }
  38                                 else if ("addFacility".Equals(config.Name))
  39                                 {
  40                                         AddFacility(config);
  41                                 }
  42                                 else
  43                                 {
  44                                         String message = "Invalid node inside facility configuration. Expected assemblyBatch";
  45
  46                                         throw new ConfigurationErrorsException(message);
  47                                 }
  48                         }
  49                 }
  50
  51                 private void AddComponents(IConfiguration config)
  52                 {
  53                         String assemblyName = config.Attributes["name"];
  54
  55                         if (assemblyName == null || assemblyName.Length == 0)
  56                         {
  57                                 String message = "The assemblyBatch node must have a 'name' attribute with the name of the assembly";
  58
  59                                 throw new ConfigurationErrorsException(message);
  60                         }
  61
  62                         ComponentScanner scanner = new ComponentScanner(assemblyName);
  63
  64                         ConfigureScanner(config, scanner);
  65
  66                         ComponentDefinition[] definitions = scanner.Process();
  67
  68                         foreach(ComponentDefinition definition in definitions)
  69                         {
  70                                 if (definition.ServiceType == null)
  71                                 {
  72                                         Kernel.AddComponent( definition.Key, definition.ClassType );
  73                                 }
  74                                 else
  75                                 {
  76                                         Kernel.AddComponent( definition.Key, definition.ServiceType, definition.ClassType );
  77                                 }
  78                         }
  79                 }
  80
  81                 private void AddFacility(IConfiguration config)
  82                 {
  83                         String id = config.Attributes["id"];
  84                         String type = config.Attributes["type"];
  85
  86                         if (type == null || type.Length == 0)
  87                         {
  88                                 String message = "The addFacility node must have a 'type' attribute with the Type's name";
  89
  90                                 throw new ConfigurationErrorsException(message);
  91                         }
  92                         if (id == null || id.Length == 0)
  93                         {
  94                                 String message = "The addFacility node must have a 'id' attribute with facility's key";
  95
  96                                 throw new ConfigurationErrorsException(message);
  97                         }
  98
  99                         Kernel.AddFacility( id, InstatiateFacility( type ) );
 100                 }
 101
 102                 private IFacility InstatiateFacility(String facilityType)
 103                 {
 104                         Type type = TypeLoadUtil.GetType(facilityType);
 105
 106                         return (IFacility) Activator.CreateInstance( type );
 107                 }
 108
 109                 private void ConfigureScanner(IConfiguration config, ComponentScanner scanner)
 110                 {
 111                         if (config.Attributes["useAttributes"] != null)
 112                         {
 113                                 scanner.UseAttributes = config.Attributes["useAttributes"].Equals("true");
 114                         }
 115
 116                         foreach(IConfiguration innerConfig in config.Children)
 117                         {
 118                                 if ("include".Equals(innerConfig.Name) )
 119                                 {
 120                                         String key = innerConfig.Attributes["key"];
 121                                         String service = innerConfig.Attributes["service"];
 122                                         String component = innerConfig.Attributes["component"];
 123
 124                                         scanner.AddInclude( key, service, component );
 125                                 }
 126                                 else if ("exclude".Equals(innerConfig.Name) )
 127                                 {
 128                                         String type = innerConfig.Attributes["type"];
 129
 130                                         scanner.AddExclude( type );
 131                                 }
 132                                 else
 133                                 {
 134                                         String message = "Invalid node inside assemblyBatch configuration. Expected 'include' or 'exclude'";
 135
 136                                         throw new ConfigurationErrorsException(message);
 137                                 }
 138                         }
 139                 }
 140         }
 141 }