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1   /*
2    * Copyright 2014 The Netty Project
3    *
4    * The Netty Project licenses this file to you under the Apache License,
5    * version 2.0 (the "License"); you may not use this file except in compliance
6    * with the License. You may obtain a copy of the License at:
7    *
8    *   http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13   * License for the specific language governing permissions and limitations
14   * under the License.
15   */
16  
17  package io.netty.channel;
18  
19  import io.netty.util.internal.StringUtil;
20  
21  /**
22   * A {@link ChannelFactory} that instantiates a new {@link Channel} by invoking its default constructor reflectively.
23   */
24  public class ReflectiveChannelFactory<T extends Channel> implements ChannelFactory<T> {
25  
26      private final Class<? extends T> clazz;
27  
28      public ReflectiveChannelFactory(Class<? extends T> clazz) {
29          if (clazz == null) {
30              throw new NullPointerException("clazz");
31          }
32          this.clazz = clazz;
33      }
34  
35      @Override
36      public T newChannel() {
37          try {
38              return clazz.getConstructor().newInstance();
39          } catch (Throwable t) {
40              throw new ChannelException("Unable to create Channel from class " + clazz, t);
41          }
42      }
43  
44      @Override
45      public String toString() {
46          return StringUtil.simpleClassName(clazz) + ".class";
47      }
48  }