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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.activecluster;
    19
    20  import javax.jms.Destination;
    21  import java.io.Serializable;
    22  import java.util.Map;
    23
    24
    25  /***
    26   * Represents a node member in a cluster
    27   *
    28   * @version $Revision: 1.3 $
    29   */
    30  public interface Node extends Serializable {
    31
    32      /***
    33       * Access to the queue to send messages direct to this node.
    34       *
    35       * @return the destination to send messages to this node while its available
    36       */
    37      public Destination getDestination();
    38
    39      /***
    40       * @return an immutable map of the nodes state
    41       */
    42      public Map getState();
    43
    44      /***
    45       * @return the name of the node
    46       */
    47      public String getName();
    48
    49      /***
    50       * @return true if this node has been elected as coordinator
    51       */
    52      public boolean isCoordinator();
    53  }