nars.entity
Class Stamp

java.lang.Object
  nars.entity.Stamp

All Implemented Interfaces:

java.lang.Cloneable

public class Stamp
extends java.lang.Object
implements java.lang.Cloneable

Each Sentence has a get of serial numbers of a constant length attached. The input sentence gets a unique number. The derived sentences inherits from its parents, then cut at the length limit.

Field Summary

private long	creationTime creation time of the stamp
private static long	current serial number, for the whole system
private int	length current stamp length
private long[]	list serial numbers

Constructor Summary

	Stamp() Generate a new stamp, with a new serial number, for input sentence
private	Stamp(Stamp first, Stamp second) Generate a new stamp for derived sentence by merging the two from parents the first one is no shorter than the second

Method Summary

boolean	equals(java.lang.Object that) Check if two stamps contains the same set of numbers
(package private) long	get(int i) Get a number from the list by index, called in this class only
long	getCreationTime() Get the creationTime of the truth-value
int	hashCode() The hash code of Stamp
static void	init() Initialize the stamp machenism of the system, called in Center
int	length() Return the length of the list
static Stamp	make(Stamp first, Stamp second) Try to merge two Stamps, return null if have overlap
TemporalValue	orderWith(Stamp that) Compare two Stamps for their temporal order
(package private) java.util.TreeSet<java.lang.Long>	toSet() Convert the list into a set
java.lang.String	toString() Get a String form of the Stamp for display

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

current

private static long current

serial number, for the whole system

list

private long[] list

serial numbers

length

private int length

current stamp length

creationTime

private final long creationTime

creation time of the stamp

Constructor Detail

Stamp

public Stamp()

Generate a new stamp, with a new serial number, for input sentence

Stamp

private Stamp(Stamp first,
              Stamp second)

Generate a new stamp for derived sentence by merging the two from parents the first one is no shorter than the second

Parameters:

first - The first Stamp

second - The second Stamp

Method Detail

make

public static Stamp make(Stamp first,
                         Stamp second)

Try to merge two Stamps, return null if have overlap

Parameters:

first - The first Stamp

second - The second Stamp

Returns:

The merged Stamp, or null

init

public static void init()

Initialize the stamp machenism of the system, called in Center

length

public int length()

Return the length of the list

Returns:

Length of the Stamp

get

long get(int i)

Get a number from the list by index, called in this class only

Parameters:

i - The index

Returns:

The number at the index

toSet

java.util.TreeSet<java.lang.Long> toSet()

Convert the list into a set

equals

public boolean equals(java.lang.Object that)

Check if two stamps contains the same set of numbers

Overrides:

equals in class java.lang.Object

Parameters:

that - The Stamp to be compared

Returns:

Whether the two have contain the same elements

hashCode

public int hashCode()

The hash code of Stamp

Overrides:

hashCode in class java.lang.Object

Returns:

The hash code

getCreationTime

public long getCreationTime()

Get the creationTime of the truth-value

Returns:

The creation time

orderWith

public TemporalValue orderWith(Stamp that)

Compare two Stamps for their temporal order

Parameters:

that - The Stamp to be compared

Returns:

The temporal order

toString

public java.lang.String toString()

Get a String form of the Stamp for display

Overrides:

toString in class java.lang.Object

Returns:

The Stamp as a String