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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  }