pt.unl.fct.di.novasys.babel.crdts.delta.causal.implementations

Class DeltaCausalCounter

java.lang.Object

pt.unl.fct.di.novasys.babel.crdts.generic.CRDT

pt.unl.fct.di.novasys.babel.crdts.delta.generic.DeltaBasedCRDT

pt.unl.fct.di.novasys.babel.crdts.delta.causal.generic.DeltaCausalBasedCRDT

pt.unl.fct.di.novasys.babel.crdts.delta.causal.implementations.DeltaCausalCounter

All Implemented Interfaces:

DeltaCausalCRDT, DeltaCRDT, GenericCRDT

public class DeltaCausalCounter
extends DeltaCausalBasedCRDT

Field Summary

Fields

Modifier and Type	Field and Description
static pt.unl.fct.di.novasys.network.ISerializer<DeltaCausalCounter>	serializer A serializer that serializes the CRDT into (and from) a ByteBuf.

Fields inherited from class pt.unl.fct.di.novasys.babel.crdts.delta.causal.generic.DeltaCausalBasedCRDT

state

Fields inherited from class pt.unl.fct.di.novasys.babel.crdts.generic.CRDT

type

Constructor Summary

Constructors

Constructor and Description
DeltaCausalCounter(CausalContext state)
DeltaCausalCounter(CausalContext state, Integer initialValue)
DeltaCausalCounter(ReplicaID replicaID)
DeltaCausalCounter(ReplicaID replicaID, Integer initialValue)

Method Summary

Modifier and Type	Method and Description
GenericCRDT	copy() Creates a copy of the CRDT.
DeltaCausalCounter	decrement(int amount)
DeltaCausalCounter	generateDelta(VersionVector vv) Calculates a delta from a given version for the current state
CausalContext	getCausalContext()
DeltaCausalCounter	increment(int amount)
DeltaCausalCounter	mergeDelta(DeltaBasedCRDT delta) Applies a delta to the current state.
DeltaCausalCounter	reset()
void	serialize(io.netty.buffer.ByteBuf in) Serializes the CRDT into a ByteBuf
int	value()

Methods inherited from class pt.unl.fct.di.novasys.babel.crdts.delta.causal.generic.DeltaCausalBasedCRDT

getReplicaID, getReplicaState

Methods inherited from class pt.unl.fct.di.novasys.babel.crdts.generic.CRDT

getType

Methods inherited from class java.lang.Object

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

Methods inherited from interface pt.unl.fct.di.novasys.babel.crdts.generic.GenericCRDT

deserializeDataType, getType

Field Detail

serializer

public static pt.unl.fct.di.novasys.network.ISerializer<DeltaCausalCounter> serializer

A serializer that serializes the CRDT into (and from) a ByteBuf.

Constructor Detail

DeltaCausalCounter

public DeltaCausalCounter(CausalContext state)

DeltaCausalCounter

public DeltaCausalCounter(ReplicaID replicaID)

DeltaCausalCounter

public DeltaCausalCounter(ReplicaID replicaID,
                          Integer initialValue)

DeltaCausalCounter

public DeltaCausalCounter(CausalContext state,
                          Integer initialValue)

Method Detail

value

public int value()

increment

public DeltaCausalCounter increment(int amount)

decrement

public DeltaCausalCounter decrement(int amount)

reset

public DeltaCausalCounter reset()

copy

public GenericCRDT copy()

Description copied from interface: GenericCRDT

Creates a copy of the CRDT. Modifications on the copy don't modify the original.

Returns:

a copy of the CRDT

serialize

public void serialize(io.netty.buffer.ByteBuf in)
               throws IOException

Description copied from interface: GenericCRDT

Serializes the CRDT into a ByteBuf

Parameters:

in - ByteBuf to serialize the CRDT to

Throws:

IOException - if an error occurs while serializing

getCausalContext

public CausalContext getCausalContext()

generateDelta

public DeltaCausalCounter generateDelta(VersionVector vv)

Description copied from interface: DeltaCRDT

Calculates a delta from a given version for the current state

Specified by:

generateDelta in interface DeltaCRDT

Specified by:

generateDelta in class DeltaCausalBasedCRDT

Parameters:

vv - a version version to calculate the delta from

Returns:

a delta for the current state

mergeDelta

public DeltaCausalCounter mergeDelta(DeltaBasedCRDT delta)

Description copied from interface: DeltaCRDT

Applies a delta to the current state. This method is analogous to a merge of states

Specified by:

mergeDelta in interface DeltaCRDT

Specified by:

mergeDelta in class DeltaCausalBasedCRDT

Parameters:

delta - a crdt representing the delta

Returns:

the current state