VersionVector (Babel CRDTs 0.0.7 API)

java.lang.Object
- pt.unl.fct.di.novasys.babel.crdts.state.utils.VersionVector

```
public class VersionVector
extends Object
```
Represents a version vector. The version vector stores pairs (replicaID, counter)

Field Summary

Fields
Modifier and Type	Field and Description
`ConcurrentMap<ReplicaID,Integer>`	`entries`
`static pt.unl.fct.di.novasys.network.ISerializer<VersionVector>`	`serializer` Static method to serialize (and deserialize) a version vector

Constructor Summary

Constructors
Constructor and Description
`VersionVector()` Creates a new, and empty, version vector.
`VersionVector(ConcurrentMap<ReplicaID,Integer> entries)` Creates a version vector with a given set of entries
`VersionVector(VersionVector vv)` Creates a version vector based on another passed as argument.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`boolean`	`contains(Timestamp ts)` Checks if a timestamp is cointained (i.e., if the counter is more recent) in the version vector
`VersionVector`	`copy()` Creates a copy of this version vector
`boolean`	`equals(Object o)`
`Integer`	`getEntry(ReplicaID replicaID)` Gets the entry (the counter) of a specific replica
`boolean`	`isVVConcurrent(VersionVector vv)` Checks a version vector is concurrent (i.e., is not comparable due to concurrent updates)
`boolean`	`isVVGreater(VersionVector vv)` Checks if a version vector is greater (all entries are bigger)
`boolean`	`isVVGreaterOrEquals(VersionVector vv)` Checks if a version vector is greater (all entries are bigger) or is equal(all entries are equal) to this version vector
`boolean`	`isVVSmaller(VersionVector vv)` Checks if a version vector is smaller (all entries are smaller) to this version vector
`boolean`	`isVVSmallerOrEquals(VersionVector vv)` Checks if a version vector is smaller (all entries are smaller) or is equal(all entries are equal) to this version vector
`Integer`	`max()` Calculates the maximum entry (biggest counter) of the version vector.
`String`	`toString()`
`void`	`updateTs(Timestamp ts)` Updates the version vector with a given timestamp, if there is a valid entry for the replica in question.
`void`	`updateVV(VersionVector vv)` Updates the version vector by performing the union if another version vector.

Methods inherited from class java.lang.Object
clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - entries
```
public ConcurrentMap<ReplicaID,Integer> entries
```
  - serializer
```
public static pt.unl.fct.di.novasys.network.ISerializer<VersionVector> serializer
```
    Static method to serialize (and deserialize) a version vector
- Constructor Detail
  - VersionVector
```
public VersionVector()
```
    Creates a new, and empty, version vector.
  - VersionVector
```
public VersionVector(VersionVector vv)
```
    Creates a version vector based on another passed as argument.
    
    Parameters:
    
    vv - the version vector to initialize.
  - VersionVector
```
public VersionVector(ConcurrentMap<ReplicaID,Integer> entries)
```
    Creates a version vector with a given set of entries
    
    Parameters:
    
    entries - entries of another version vector
- Method Detail
  - getEntry
```
public Integer getEntry(ReplicaID replicaID)
```
    Gets the entry (the counter) of a specific replica
    
    Parameters:
    
    replicaID - replica identifer
    
    Returns:
    
    returns the replica identifier or -1 if the replica entry doesn't exist
  - max
```
public Integer max()
```
    Calculates the maximum entry (biggest counter) of the version vector.
    
    Returns:
    
    the maximum of all entries
  - contains
```
public boolean contains(Timestamp ts)
```
    Checks if a timestamp is cointained (i.e., if the counter is more recent) in the version vector
    
    Parameters:
    
    ts - the timestamp
    
    Returns:
    
    true if it is, or false otherwise
  - updateTs
```
public void updateTs(Timestamp ts)
```
    Updates the version vector with a given timestamp, if there is a valid entry for the replica in question.
    
    Parameters:
    
    ts - a timestamp
  - updateVV
```
public void updateVV(VersionVector vv)
```
    Updates the version vector by performing the union if another version vector. The entries are updated if they counter value is more recent
    
    Parameters:
    
    vv - a version vector
  - isVVSmallerOrEquals
```
public boolean isVVSmallerOrEquals(VersionVector vv)
```
    Checks if a version vector is smaller (all entries are smaller) or is equal(all entries are equal) to this version vector
    
    Parameters:
    
    vv - a version vector
    
    Returns:
    
    true if it is, or false otherwise
  - isVVSmaller
```
public boolean isVVSmaller(VersionVector vv)
```
    Checks if a version vector is smaller (all entries are smaller) to this version vector
    
    Parameters:
    
    vv - a version vector
    
    Returns:
    
    true if it is, or false otherwise
  - isVVGreaterOrEquals
```
public boolean isVVGreaterOrEquals(VersionVector vv)
```
    Checks if a version vector is greater (all entries are bigger) or is equal(all entries are equal) to this version vector
    
    Parameters:
    
    vv - a version vector
    
    Returns:
    
    true if it is, or false otherwise
  - isVVGreater
```
public boolean isVVGreater(VersionVector vv)
```
    Checks if a version vector is greater (all entries are bigger)
    
    Parameters:
    
    vv - a version vector
    
    Returns:
    
    true if it is, or false otherwise
  - isVVConcurrent
```
public boolean isVVConcurrent(VersionVector vv)
```
    Checks a version vector is concurrent (i.e., is not comparable due to concurrent updates)
    
    Parameters:
    
    vv - a version vector
    
    Returns:
    
    true if it is, or false otherwise
  - copy
```
public VersionVector copy()
```
    Creates a copy of this version vector
    
    Returns:
    
    a copy of the version vector
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - equals
```
public boolean equals(Object o)
```
    Overrides:
    
    equals in class Object

Methods inherited from class java.lang.Object

entries

serializer

VersionVector

VersionVector

VersionVector

getEntry

max

contains

updateTs

updateVV

isVVSmallerOrEquals

isVVSmaller

isVVGreaterOrEquals

isVVGreater

isVVConcurrent

copy

toString

equals