org.jgroups.blocks
Interface TwoPhaseVotingListener

All Known Implementing Classes:

DistributedLockManager

public interface TwoPhaseVotingListener

Implementations of this interface can participate in two-phase voting process.

Author:

Roman Rokytskyy (rrokytskyy@acm.org)

Method Summary

void	abort(java.lang.Object decree) This is unconditional abort of the previous voting on the decree.
boolean	commit(java.lang.Object decree) This is voting on the commiting the decree.
boolean	prepare(java.lang.Object decree) This is voting if the decree is acceptable to the party.

Method Detail

prepare

boolean prepare(java.lang.Object decree)
                throws VoteException

This is voting if the decree is acceptable to the party.

Returns:

true if the decree is acceptable.

Throws:

VoteException - if the decree type is unknown or listener does not want to vote on it.

commit

boolean commit(java.lang.Object decree)
               throws VoteException

This is voting on the commiting the decree.

Returns:

true is the decree is commited.

Throws:

VoteException - if the decree type is unknown or listener does not want to vote on it.

abort

void abort(java.lang.Object decree)
           throws VoteException

This is unconditional abort of the previous voting on the decree.

Throws:

VoteException - if the listener ignores the abort.