io.atomix.utils.time

Class VectorClock<T extends Identifier>

java.lang.Object

io.atomix.utils.time.VectorClock<T>

All Implemented Interfaces:

Clock<VectorTimestamp<T>>

@Beta
public class VectorClock<T extends Identifier>
extends java.lang.Object
implements Clock<VectorTimestamp<T>>

Vector clock.

Constructor Summary

Constructors

Constructor and Description
VectorClock(T localIdentifier)
VectorClock(VectorTimestamp<T> localTimestamp)
VectorClock(VectorTimestamp<T> localTimestamp, java.util.Collection<VectorTimestamp<T>> vector)

Method Summary

Modifier and Type	Method and Description
LogicalTimestamp	getLocalTimestamp() Returns the local logical timestamp.
VectorTimestamp<T>	getTime() Returns the current time of the clock.
LogicalTimestamp	getTimestamp(T identifier) Returns the logical timestamp for the given identifier.
java.util.Collection<VectorTimestamp<T>>	getTimestamps() Returns a collection of identifier-timestamp pairs.
java.lang.String	toString()
void	update(VectorClock<T> clock) Updates the vector clock.
void	update(VectorTimestamp<T> timestamp) Updates the given timestamp.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

VectorClock

public VectorClock(T localIdentifier)

VectorClock

public VectorClock(VectorTimestamp<T> localTimestamp)

VectorClock

public VectorClock(VectorTimestamp<T> localTimestamp,
                   java.util.Collection<VectorTimestamp<T>> vector)

Method Detail

getTime

public VectorTimestamp<T> getTime()

Description copied from interface: Clock

Returns the current time of the clock.

Specified by:

getTime in interface Clock<VectorTimestamp<T extends Identifier>>

Returns:

the current time

getLocalTimestamp

public LogicalTimestamp getLocalTimestamp()

Returns the local logical timestamp.

Returns:

the logical timestamp for the local identifier

getTimestamp

public LogicalTimestamp getTimestamp(T identifier)

Returns the logical timestamp for the given identifier.

Parameters:

identifier - the identifier for which to return the timestamp

Returns:

the logical timestamp for the given identifier

getTimestamps

public java.util.Collection<VectorTimestamp<T>> getTimestamps()

Returns a collection of identifier-timestamp pairs.

Returns:

a collection of identifier-timestamp pairs

update

public void update(VectorTimestamp<T> timestamp)

Updates the given timestamp.

Parameters:

timestamp - the timestamp to update

update

public void update(VectorClock<T> clock)

Updates the vector clock.

Parameters:

clock - the vector clock with which to update this clock

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object