TransportServerChannelSupport xref

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    1   /***
    2    *
    3    * Copyright 2004 Protique Ltd
    4    *
    5    * Licensed under the Apache License, Version 2.0 (the "License");
    6    * you may not use this file except in compliance with the License.
    7    * You may obtain a copy of the License at
    8    *
    9    * http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the License for the specific language governing permissions and
    15   * limitations under the License.
    16   *
    17   **/
    18  package org.codehaus.activemq.transport;
    19
    20  import org.apache.commons.logging.Log;
    21  import org.apache.commons.logging.LogFactory;
    22
    23  import javax.jms.JMSException;
    24  import java.net.URI;
    25  import java.util.ArrayList;
    26  import java.util.Iterator;
    27  import java.util.List;
    28
    29  /***
    30   * An abstract base class useful for implementation inheritence
    31   *
    32   * @version $Revision: 1.7 $
    33   */
    34  public abstract class TransportServerChannelSupport implements TransportServerChannel {
    35
    36      private static final Log log = LogFactory.getLog(TransportServerChannelSupport.class);
    37
    38      private String url;
    39      private TransportChannelListener transportChannelListener;
    40      private List channels = new ArrayList();
    41
    42      public TransportServerChannelSupport(URI url) {
    43          this(url.toString());
    44      }
    45
    46      public TransportServerChannelSupport(String url) {
    47          this.url = url;
    48      }
    49
    50      public void start() throws JMSException {
    51          if (transportChannelListener == null) {
    52              throw new JMSException("Must have a TransportChannelListener attached!");
    53          }
    54      }
    55
    56      public synchronized void stop() throws JMSException {
    57          for (Iterator iter = channels.iterator(); iter.hasNext();) {
    58              TransportChannel channel = (TransportChannel) iter.next();
    59              channel.stop();
    60          }
    61      }
    62
    63      public TransportChannelListener getTransportChannelListener() {
    64          return transportChannelListener;
    65      }
    66
    67      public void setTransportChannelListener(TransportChannelListener listener) {
    68          this.transportChannelListener = listener;
    69      }
    70
    71      public String getUrl() {
    72          return url;
    73      }
    74
    75      public void setUrl(String url) {
    76          this.url = url;
    77      }
    78
    79      protected synchronized void addClient(TransportChannel channel) {
    80          if (transportChannelListener == null) {
    81              log.warn("No listener attached, cannot add channel: " + channel);
    82          }
    83          else {
    84              transportChannelListener.addClient(channel);
    85              channel.setTransportChannelListener(transportChannelListener);
    86              channels.add(channel);
    87          }
    88      }
    89  }