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

Interface DeltaCRDT

All Superinterfaces:

GenericCRDT

All Known Subinterfaces:

DeltaCausalCRDT

All Known Implementing Classes:

DeltaAWORSet, DeltaBasedCRDT, DeltaCausalBasedCRDT, DeltaCausalCounter, DeltaCRDTLWWMap, DeltaEWFlag, DeltaLWWCRDTMap, DeltaLWWMap, DeltaLWWRegister, DeltaLWWSet, DeltaMVMap, DeltaMVRegister, DeltaORMap, DeltaPNCounter, DeltaRGA

public interface DeltaCRDT
extends GenericCRDT

Method Summary

Modifier and Type	Method and Description
DeltaBasedCRDT	generateDelta(VersionVector vv) Calculates a delta from a given version for the current state
ReplicaID	getReplicaID() Gets the replica identifier
VVState	getReplicaState() Gets the replica state.
DeltaBasedCRDT	mergeDelta(DeltaBasedCRDT crdt) Applies a delta to the current state.

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

copy, deserializeDataType, getType, serialize

Method Detail

getReplicaState

VVState getReplicaState()

Gets the replica state. At the moment this state stores the replica identifier and a version vector to handle causal context.

Returns:

the replica state

getReplicaID

ReplicaID getReplicaID()

Gets the replica identifier

Returns:

the replica identifier.

generateDelta

DeltaBasedCRDT generateDelta(VersionVector vv)

Calculates a delta from a given version for the current state

Parameters:

vv - a version version to calculate the delta from

Returns:

a delta for the current state

mergeDelta

DeltaBasedCRDT mergeDelta(DeltaBasedCRDT crdt)
                   throws CRDTNotValidException

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

Parameters:

crdt - a crdt representing the delta

Returns:

the current state

Throws:

CRDTNotValidException - if the crdt passed as argument is invalid