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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  
19  package org.codehaus.activecluster.election;
20  
21  import javax.jms.JMSException;
22  import org.codehaus.activecluster.Cluster;
23  import org.codehaus.activecluster.Node;
24  
25  /*** 
26   * <p><code>Service</code> Used by the Cluster to elect a coordinator.</p>
27   *
28   * @version $Revision: 1.1 $
29   */
30  public interface ElectionStrategy {
31   
32      /***
33       * Elect a coordinator. 
34       * @param cluster
35       * @return the elected Node
36       * @throws JMSException
37       */
38      public Node doElection(Cluster cluster) throws JMSException;
39      
40  }