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Java > Open Source Codes > org > jgroups > blocks > VotingListener


1 package org.jgroups.blocks;
2
3 /**
4  * Implemetations of this interface are able to participate in voting process.
5  *
6  * @author Roman Rokytskyy (rrokytskyy@acm.org)
7  */
8 public interface VotingListener {
9     /**
10      * Each member is able to vote with <code>true</code> or <code>false</code>
11      * messages. If the member does not know what to do with the
12      * <code>decree</code> it should throw <code>VoteException</code>. Doing
13      * this he will be excluded from voting process and will not influence
14      * the result.
15      *
16      * @param decree object representing the decree of current voting.
17      *
18      * @throws VoteException if listener does not know the meaning of the
19      * decree and wants to be excluded from this voting.
20      */
21     boolean vote(Object JavaDoc decree) throws VoteException;
22 }
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