View Javadoc

    1   /*
    2    * Copyright 2009 Red Hat, Inc.
    3    *
    4    * Red Hat licenses this file to you under the Apache License, version 2.0
    5    * (the "License"); you may not use this file except in compliance with the
    6    * 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  package org.jboss.netty.channel;
    17
    18  import static org.jboss.netty.channel.Channels.*;
    19
    20  /**
    21   * The default {@link ChildChannelStateEvent} implementation.
    22   *
    23   * @author <a href="http://www.jboss.org/netty/">The Netty Project</a>
    24   * @author <a href="http://gleamynode.net/">Trustin Lee</a>
    25   *
    26   * @version $Rev: 2080 $, $Date: 2010-01-26 18:04:19 +0900 (Tue, 26 Jan 2010) $
    27   *
    28   */
    29  public class DefaultChildChannelStateEvent implements ChildChannelStateEvent {
    30
    31      private final Channel parentChannel;
    32      private final Channel childChannel;
    33
    34      /**
    35       * Creates a new instance.
    36       */
    37      public DefaultChildChannelStateEvent(Channel parentChannel, Channel childChannel) {
    38          if (parentChannel == null) {
    39              throw new NullPointerException("parentChannel");
    40          }
    41          if (childChannel == null) {
    42              throw new NullPointerException("childChannel");
    43          }
    44          this.parentChannel = parentChannel;
    45          this.childChannel = childChannel;
    46      }
    47
    48      public Channel getChannel() {
    49          return parentChannel;
    50      }
    51
    52      public ChannelFuture getFuture() {
    53          return succeededFuture(getChannel());
    54      }
    55
    56      public Channel getChildChannel() {
    57          return childChannel;
    58      }
    59
    60      @Override
    61      public String toString() {
    62          String channelString = getChannel().toString();
    63          StringBuilder buf = new StringBuilder(channelString.length() + 32);
    64          buf.append(channelString);
    65          buf.append(getChildChannel().isOpen()? " CHILD_OPEN: " : " CHILD_CLOSED: ");
    66          buf.append(getChildChannel().getId());
    67          return buf.toString();
    68      }
    69  }