VersionVector Class

VersionVector Class

Representation of a Vector-based clock (counting clock), inspired by Lamport logical clocks. Based on code from VectorClock. This class is immutable, i.e. "modifying" methods return a new instance.

Inheritance Hierarchy

SystemObject
  Akka.DistributedDataVersionVector
    Akka.DistributedDataMultiVersionVector
    Akka.DistributedDataSingleVersionVector

Namespace: Akka.DistributedData
Assembly: Akka.DistributedData (in Akka.DistributedData.dll) Version: 1.2.3.42 (1.2.3.42)

Syntax

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[SerializableAttribute]
public abstract class VersionVector : IReplicatedData<VersionVector>, 
	IReplicatedData, IReplicatedDataSerialization, IRemovedNodePruning<VersionVector>, IEquatable<VersionVector>

[<AbstractClassAttribute>]
[<SerializableAttribute>]
type VersionVector =  
    class
        interface IReplicatedData<VersionVector>
        interface IReplicatedData
        interface IReplicatedDataSerialization
        interface IRemovedNodePruning<VersionVector>
        interface IEquatable<VersionVector>
    end

The VersionVector type exposes the following members.

Constructors

	Name	Description
	VersionVector	Initializes a new instance of the VersionVector class

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Properties

	Name	Description
	Count
	IsEmpty
	VersionEnumerator

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Methods

	Name	Description
	Compare	Compare two version vectors. The outcome will be one of the following: Version 1 is SAME (==) as Version 2 iff for all i c1(i) == c2(i) Version 1 is BEFORE (<) Version 2 iff for all i c1(i) <= c2(i) and there exist a j such that c1(j) < c2(j) Version 1 is AFTER (>) Version 2 iff for all i c1(i) >= c2(i) and there exist a j such that c1(j) > c2(j) Version 1 is CONCURRENT to Version 2 otherwise
	Contains
	Create(ImmutableDictionaryUniqueAddress, Int64)
	Create(UniqueAddress, Int64)
	Equals(Object)	Determines whether the specified object is equal to the current object. (Overrides ObjectEquals(Object).)
	Equals(VersionVector)	Indicates whether the current object is equal to another object of the same type.
	Finalize	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
	GetHashCode	Serves as the default hash function. (Inherited from Object.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	Increment	Increment the version for the node passed as argument. Returns a new VersionVector.
	IsAfter
	IsBefore
	IsConcurrent
	IsSame	Returns true if x VersionVector has the same history as the y VersionVector else false.
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	Merge(IReplicatedData)
	Merge(VersionVector)	Merges this VersionVector with another VersionVector. E.g. merges its versioned history.
	NeedPruningFrom
	Prune
	PruningCleanup
	ToString	Returns a string that represents the current object. (Inherited from Object.)
	VersionAt

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Operators

	Name	Description
	Equality
	GreaterThan	Returns true if x is after y else false.
	Inequality	Returns true if x VersionVector has other history than the y VersionVector else false.
	LessThan	Returns true if x is before y else false.

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Fields

	Name	Description
	Counter
	Empty

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Extension Methods

	Name	Description
	AsInstanceOfT	TBD (Defined by Extensions.)
	Match	Overloaded. Matches the specified target. (Defined by PatternMatch.)
	MatchT	Overloaded. Matches the specified target and return a result of target processing. (Defined by PatternMatch.)

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Reference

Akka.DistributedData Namespace