com.hazelcast.quorum.impl

Class QuorumImpl

java.lang.Object

com.hazelcast.quorum.impl.QuorumImpl

All Implemented Interfaces:

Quorum

public class QuorumImpl
extends Object
implements Quorum

QuorumImpl can be used to notify quorum service for a particular quorum result that originated externally.

Constructor Summary

Constructors

Constructor and Description
QuorumImpl(QuorumConfig config, NodeEngineImpl nodeEngine)

Method Summary

Modifier and Type	Method and Description
void	ensureQuorumPresent(Operation op) Ensures that the quorum is present for the given operation.
QuorumConfig	getConfig()
String	getName()
int	getSize()
boolean	isInitialized()
boolean	isPresent() Returns true if quorum is present, false if absent.
void	setLocalResult(boolean presence) Sets the current quorum presence to the given presence and marks the instance as initialized.
String	toString()
void	update(Collection<Member> members) Determines if the quorum is present for the given member collection, caches the result and publishes an event under the quorumName topic if there was a change in presence.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

QuorumImpl

public QuorumImpl(QuorumConfig config,
                  NodeEngineImpl nodeEngine)

Method Detail

update

public void update(Collection<Member> members)

Determines if the quorum is present for the given member collection, caches the result and publishes an event under the quorumName topic if there was a change in presence.

Parameters:

members - the members for which the presence is determined

getName

public String getName()

getSize

public int getSize()

getConfig

public QuorumConfig getConfig()

isInitialized

public boolean isInitialized()

isPresent

public boolean isPresent()

Description copied from interface: Quorum

Returns true if quorum is present, false if absent.

Specified by:

isPresent in interface Quorum

Returns:

boolean presence of the quorum

setLocalResult

public void setLocalResult(boolean presence)

Sets the current quorum presence to the given presence and marks the instance as initialized.

Parameters:

presence - the quorum presence to be set

ensureQuorumPresent

public void ensureQuorumPresent(Operation op)

Ensures that the quorum is present for the given operation. First checks if the quorum type defined by the configuration covers this operation and checks if the quorum is present. Dispatches an event under the quorumName topic if membership changed after determining the quorum presence.

Parameters:

op - the operation for which the quorum should be present

Throws:

QuorumException - if the operation requires a quorum and the quorum is not present

toString

public String toString()

Overrides:

toString in class Object