| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| using System; |
| using System.Reflection; |
| using System.Collections.Generic; |
| |
| namespace Apache.NMS.ActiveMQ.Util |
| { |
| public class FactoryFinder<AttributeType, FactoryType> where AttributeType : FactoryAttribute |
| { |
| private static IDictionary<string, bool> DEFAULT_EXCLUDES; |
| |
| static FactoryFinder() |
| { |
| DEFAULT_EXCLUDES = new Dictionary<string, bool>(); |
| |
| DEFAULT_EXCLUDES.Add("mscorlib", true); |
| DEFAULT_EXCLUDES.Add("System", true); |
| DEFAULT_EXCLUDES.Add("Mono", true); |
| DEFAULT_EXCLUDES.Add("Microsoft", true); |
| DEFAULT_EXCLUDES.Add("nunit", true); |
| } |
| |
| public Type FindFactoryType(string factoryId) |
| { |
| try |
| { |
| // Look in this assembly first as its most likely to be the source, if we |
| // don't find it here then we expand out to all the currently loaded |
| // assemblies in the current AppDomain. We could also start searching |
| // through all referenced assemblies in all the currently loaded ones but |
| // that could get out of hand so try this first. |
| Type result = this.SearchAssembly(Assembly.GetExecutingAssembly(), factoryId); |
| |
| if(result == null) |
| { |
| Assembly[] assemblies = AppDomain.CurrentDomain.GetAssemblies(); |
| |
| foreach(Assembly assembly in assemblies) |
| { |
| if(!IsExcluded(assembly)) |
| { |
| result = SearchAssembly(assembly, factoryId); |
| |
| if(result != null) |
| { |
| break; |
| } |
| } |
| } |
| } |
| |
| return result; |
| } |
| catch |
| { |
| return null; |
| } |
| } |
| |
| private bool IsExcluded(Assembly assembly) |
| { |
| if(assembly.Equals(Assembly.GetExecutingAssembly())) |
| { |
| return true; |
| } |
| |
| string name = assembly.GetName().Name; |
| |
| foreach(string key in DEFAULT_EXCLUDES.Keys) |
| { |
| if(name.StartsWith(key)) |
| { |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| private Type SearchAssembly(Assembly assembly, string factoryId) |
| { |
| Tracer.DebugFormat("Searching Assembly: {0} for factory of the id: {1}", |
| assembly.GetName().Name, factoryId); |
| |
| Type[] types = assembly.GetTypes(); |
| |
| foreach(Type type in types) |
| { |
| object[] attributes = type.GetCustomAttributes(false); |
| foreach(Attribute attribute in attributes) |
| { |
| if(attribute is AttributeType) |
| { |
| FactoryAttribute factoryAttribute = (FactoryAttribute)attribute; |
| if(factoryAttribute.FactoryIdentifier.Equals(factoryId)) |
| { |
| Tracer.DebugFormat("Found the Factory of type {0} for id: {1}", |
| type.ToString(), factoryId); |
| return type; |
| } |
| } |
| } |
| } |
| |
| return null; |
| } |
| } |
| } |
| |