Package jason.stdlib

Class min

java.lang.Object

jason.asSemantics.DefaultInternalAction

jason.stdlib.min

All Implemented Interfaces:

InternalAction, Serializable

Direct Known Subclasses:

max

public class min
extends DefaultInternalAction

Internal action: .min.

Description: gets the minimum value of a list of terms, using the "natural" order of terms. Between different types of terms, the following order is used:
numbers < atoms < structures < lists

Parameters:

• + list (list): the list where to find the minimal term.
  
• +/- minimal (term).

Query version:

• + term (variable or structure): the variable or structure whose instances will be used as min candidate.
  
• + query (logical formula): the formula used to find values for the term
  
• +/- result (term): the min value for the query.
  

Examples:

• .min([c,a,b],X): X unifies with a.
• .min([b,c,10,g,f(10),[3,4],5,[3,10],f(4)],X): X unifies with 5.
• .min([3,2,5],2): true.
• .min([3,2,5],5): false.
• .min([],X): false.
• .min(V, b(V), Min): unifies Min with the min V value for query b(V).

See Also:

• concat
• delete
• length
• member
• nth
• sort
• max
• reverse
• difference
• intersection
• union
• Serialized Form

Constructor Summary

Constructors

Constructor	Description
min()

Method Summary

Modifier and Type	Method	Description
protected void	checkArguments(Term[] args)
protected boolean	compare(Term a, Term t)
static InternalAction	create()
Object	execute(TransitionSystem ts, Unifier un, Term[] args)	Executes the internal action.
int	getMaxArgs()
int	getMinArgs()

Methods inherited from class jason.asSemantics.DefaultInternalAction

canBeUsedInContext, destroy, prepareArguments, suspendIntention

Methods inherited from class java.lang.Object

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

Constructor Details

min

public min()

Method Details

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 Object execute(TransitionSystem ts,
 Unifier un,
 Term[] args)
               throws 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:

Exception

compare

protected boolean compare(Term a,
 Term t)