View Javadoc

    1   /*
    2    * Copyright 2012 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  package org.jboss.netty.channel;
    17
    18  import static org.jboss.netty.channel.Channels.*;
    19
    20  /**
    21   * The default {@link ChildChannelStateEvent} implementation.
    22   */
    23  public class DefaultChildChannelStateEvent implements ChildChannelStateEvent {
    24
    25      private final Channel parentChannel;
    26      private final Channel childChannel;
    27
    28      /**
    29       * Creates a new instance.
    30       */
    31      public DefaultChildChannelStateEvent(Channel parentChannel, Channel childChannel) {
    32          if (parentChannel == null) {
    33              throw new NullPointerException("parentChannel");
    34          }
    35          if (childChannel == null) {
    36              throw new NullPointerException("childChannel");
    37          }
    38          this.parentChannel = parentChannel;
    39          this.childChannel = childChannel;
    40      }
    41
    42      public Channel getChannel() {
    43          return parentChannel;
    44      }
    45
    46      public ChannelFuture getFuture() {
    47          return succeededFuture(getChannel());
    48      }
    49
    50      public Channel getChildChannel() {
    51          return childChannel;
    52      }
    53
    54      @Override
    55      public String toString() {
    56          String channelString = getChannel().toString();
    57          StringBuilder buf = new StringBuilder(channelString.length() + 32);
    58          buf.append(channelString);
    59          buf.append(getChildChannel().isOpen()? " CHILD_OPEN: " : " CHILD_CLOSED: ");
    60          buf.append(getChildChannel().getId());
    61          return buf.toString();
    62      }
    63  }