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 upstream {@link ChannelStateEvent} 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 UpstreamChannelStateEvent implements ChannelStateEvent {
    30
    31      private final Channel channel;
    32      private final ChannelState state;
    33      private final Object value;
    34
    35      /**
    36       * Creates a new instance.
    37       */
    38      public UpstreamChannelStateEvent(
    39              Channel channel, ChannelState state, Object value) {
    40
    41          if (channel == null) {
    42              throw new NullPointerException("channel");
    43          }
    44          if (state == null) {
    45              throw new NullPointerException("state");
    46          }
    47
    48          this.channel = channel;
    49          this.state = state;
    50          this.value = value;
    51      }
    52
    53      public Channel getChannel() {
    54          return channel;
    55      }
    56
    57      public ChannelFuture getFuture() {
    58          return succeededFuture(getChannel());
    59      }
    60
    61      public ChannelState getState() {
    62          return state;
    63      }
    64
    65      public Object getValue() {
    66          return value;
    67      }
    68
    69      @Override
    70      public String toString() {
    71          String channelString = getChannel().toString();
    72          StringBuilder buf = new StringBuilder(channelString.length() + 64);
    73          buf.append(channelString);
    74          switch (getState()) {
    75          case OPEN:
    76              if (Boolean.TRUE.equals(getValue())) {
    77                  buf.append(" OPEN");
    78              } else {
    79                  buf.append(" CLOSED");
    80              }
    81              break;
    82          case BOUND:
    83              if (getValue() != null) {
    84                  buf.append(" BOUND: ");
    85                  buf.append(getValue());
    86              } else {
    87                  buf.append(" UNBOUND");
    88              }
    89              break;
    90          case CONNECTED:
    91              if (getValue() != null) {
    92                  buf.append(" CONNECTED: ");
    93                  buf.append(getValue());
    94              } else {
    95                  buf.append(" DISCONNECTED");
    96              }
    97              break;
    98          case INTEREST_OPS:
    99              buf.append(" INTEREST_CHANGED");
    100             break;
    101         default:
    102             buf.append(getState().name());
    103             buf.append(": ");
    104             buf.append(getValue());
    105         }
    106         return buf.toString();
    107     }
    108 }