com.sleepycat.je.rep.elections

Interface Acceptor.SuggestionGenerator

All Known Implementing Classes:

MasterSuggestionGenerator

Enclosing class:

Acceptor

public static interface Acceptor.SuggestionGenerator

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	Acceptor.SuggestionGenerator.Ranking A description of the ranking used when comparing Promises to pick a Master.

Method Summary

Modifier and Type	Method and Description
Protocol.Value	get(Proposer.Proposal proposal) Used to generate a suggested value for use by a Proposer.
Acceptor.SuggestionGenerator.Ranking	getRanking(Proposer.Proposal proposal) The importance associated with the above suggestion.

Method Detail

get

Protocol.Value get(Proposer.Proposal proposal)

Used to generate a suggested value for use by a Proposer. It's a hint. The proposal argument may be used to freeze values like the VLSN number from advancing (if they were used in the ranking) until an election has completed.

Parameters:

proposal - the Proposal for which the value is being suggested.

Returns:

the suggested value.

getRanking

Acceptor.SuggestionGenerator.Ranking getRanking(Proposer.Proposal proposal)

The importance associated with the above suggestion. Acceptors have to agree on a common system for ranking importance so that the relative importance of different suggestions can be meaningfully compared.

Parameters:

proposal - the proposal associated with the ranking

Returns:

the importance of the suggestion as a number