jason.stdlib
Class random

java.lang.Object
  jason.asSemantics.DefaultInternalAction
      jason.stdlib.random

All Implemented Interfaces:

InternalAction, java.io.Serializable

public class random
extends DefaultInternalAction

Internal action: .random(N).

Description: unifies N with a random number between 0 and 1.

Parameter:

• - value (number): the variable to receive the random value
  
• + quantify of random numbers (number, optional): default value is 1, value = 0 means that an infinify number of random numbers will be produced (this is useful for some backtrack circumstances).

Example:

• .random(X): unifies X with one random number between 0 and 1.
• .random(X, 5): unifies X with a random number between 0 and 1, and backtracks 5 times. For example: .findall(X, .random(X,5), L) will produce a list of 5 random numbers.
• .random(X, 0): unifies X with a random number between 0 and 1, and but backtracks infinitely.

See Also:

function version, Serialized Form

Constructor Summary

random()

Method Summary

protected void	checkArguments(Term[] args)
static InternalAction	create()
java.lang.Object	execute(TransitionSystem ts, Unifier un, Term[] args) Executes the internal action.
int	getMaxArgs()
int	getMinArgs()

Methods inherited from class jason.asSemantics.DefaultInternalAction

canBeUsedInContext, prepareArguments, suspendIntention

Methods inherited from class java.lang.Object

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

Constructor Detail

random

public random()

Method Detail

create

public static InternalAction create()

getMinArgs

public int getMinArgs()

Overrides:

getMinArgs in class DefaultInternalAction

getMaxArgs

public int getMaxArgs()

Overrides:

getMaxArgs in class DefaultInternalAction

checkArguments

protected void checkArguments(Term[] args)
                       throws JasonException

Overrides:

checkArguments in class DefaultInternalAction

Throws:

JasonException

execute

public java.lang.Object execute(TransitionSystem ts,
                                Unifier un,
                                Term[] args)
                         throws java.lang.Exception

Description copied from interface: InternalAction

Executes the internal action. It should return a Boolean or an Iterator. A true boolean return means that the IA was successfully executed. An Iterator result means that there is more than one answer for this IA (e.g. see member internal action).

Specified by:

execute in interface InternalAction

Overrides:

execute in class DefaultInternalAction

Throws:

java.lang.Exception