AsynchChannelToClientRequestChannel xref

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    1   /***
    2    *
    3    * Copyright 2004 Hiram Chirino
    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  package org.activeio.adapter;
    18
    19  import java.io.IOException;
    20
    21  import org.activeio.Packet;
    22  import org.activeio.RequestChannel;
    23  import org.activeio.RequestListener;
    24  import org.activeio.SynchChannel;
    25
    26
    27  /***
    28   * Creates a {@see org.activeio.RequestChannel} out of a {@see org.activeio.SynchChannel}.
    29   * Does not support handing requests.  It can only be used to send requests.
    30   *
    31   * @version $Revision$
    32   */
    33  final public class AsynchChannelToClientRequestChannel implements RequestChannel {
    34
    35      private final SynchChannel next;
    36
    37      public AsynchChannelToClientRequestChannel(SynchChannel next) {
    38          this.next = next;
    39      }
    40
    41      public Packet request(Packet request, long timeout) throws IOException {
    42          next.write(request);
    43          next.flush();
    44          return next.read(timeout);
    45      }
    46
    47      public void setRequestListener(RequestListener requestListener) throws IOException {
    48          throw new IOException("Operation not supported.");
    49      }
    50
    51      public RequestListener getRequestListener() {
    52          return null;
    53      }
    54
    55      public Object narrow(Class target) {
    56          return next.narrow(target);
    57      }
    58
    59      public void dispose() {
    60          next.dispose();
    61      }
    62
    63      public void start() throws IOException {
    64          next.start();
    65      }
    66
    67      public void stop(long timeout) throws IOException {
    68          next.stop(timeout);
    69      }
    70  }