Package org.tweetyproject.action.description.syntax

Class DynamicLaw

java.lang.Object

org.tweetyproject.action.description.syntax.CLaw

org.tweetyproject.action.description.syntax.DynamicLaw

All Implemented Interfaces:

CausalLaw, Formula

public class DynamicLaw
extends CLaw

A dynamic law in C has the form "caused F if G after U" where F is a propositional formula over the set of fluent names (called headFormula) G is a propositional formula over the set of fluent names (called ifFormula) U is a propositional formula over the set of fluent names and the set of action names (called afterFormula)

Author:

wutsch

Constructor Summary

Constructors

Constructor	Description
DynamicLaw()	Constructs a new empty dynamic law.
DynamicLaw(FolFormula headFormula, FolFormula afterFormula)	Creates a new dynamic law of the form "caused headFormula after afterFormula"
DynamicLaw(FolFormula headFormula, FolFormula afterFormula, Set<GroundingRequirement> requirements)	Creates a new dynamic law of the form "caused headFormula after afterFormula" requires requirements
DynamicLaw(FolFormula headFormula, FolFormula ifFormula, FolFormula afterFormula)	Creates a new dynamic law of the form: "caused headFormula if ifFormula after afterFormula"
DynamicLaw(FolFormula headFormula, FolFormula ifFormula, FolFormula afterFormula, Set<GroundingRequirement> requirements)	Creates a new dynamic law of the form: "caused headFormula if ifFormula after afterFormula requires requirements"

Method Summary

Modifier and Type	Method	Description
FolFormula	getAfterFormula()	Retrieves the after formula of this causal law.
Set<CLaw>	getAllGrounded()	Retrieves the set of all grounded instances of this causal law.
Set<FolAtom>	getAtoms()	Retrieves the set of propositions (atoms) contained in all formulas within this law.
Set<FolFormula>	getFormulas()	Returns the set of formulas contained in this causal law, e.g.
Signature	getSignature()	Returns the signature of the language of this formula.
boolean	isDefinite()	Returns true iff this law is definite.
Set<CLaw>	toDefinite()	Returns an equivalent definite causal law.
String	toString()

Methods inherited from class org.tweetyproject.action.description.syntax.CLaw

addGroundingRequirement, getHeadFormula, getIfFormula, isGround

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

DynamicLaw

public DynamicLaw()

Constructs a new empty dynamic law.

DynamicLaw

public DynamicLaw(FolFormula headFormula,
 FolFormula ifFormula,
 FolFormula afterFormula)

Creates a new dynamic law of the form: "caused headFormula if ifFormula after afterFormula"

Parameters:

headFormula - some FOL formula

ifFormula - some FOL formula

afterFormula - some FOL formula

DynamicLaw

public DynamicLaw(FolFormula headFormula,
 FolFormula ifFormula,
 FolFormula afterFormula,
 Set<GroundingRequirement> requirements)

Creates a new dynamic law of the form: "caused headFormula if ifFormula after afterFormula requires requirements"

Parameters:

headFormula - some FOL formula

ifFormula - some FOL formula

afterFormula - some FOL formula

requirements - a set of requirements

DynamicLaw

public DynamicLaw(FolFormula headFormula,
 FolFormula afterFormula)

Creates a new dynamic law of the form "caused headFormula after afterFormula"

Parameters:

headFormula - some FOL formula

afterFormula - some FOL formula

DynamicLaw

public DynamicLaw(FolFormula headFormula,
 FolFormula afterFormula,
 Set<GroundingRequirement> requirements)

Creates a new dynamic law of the form "caused headFormula after afterFormula" requires requirements

Parameters:

headFormula - some FOL formula

afterFormula - some FOL formula

requirements - a set of requirements

Method Details

getAfterFormula

public FolFormula getAfterFormula()

Retrieves the after formula of this causal law.

Returns:

the `FolFormula` that constitutes the after formula of this causal law.

isDefinite

public boolean isDefinite()

Description copied from class: CLaw

Returns true iff this law is definite. A causal law is definite if it's head is a literal or a contradiction and all formulas are conjunctions of literals.

Specified by:

isDefinite in class CLaw

Returns:

true, if this law is definite, false otherwise.

toString

public String toString()

Overrides:

toString in class Object

getSignature

public Signature getSignature()

Description copied from interface: Formula

Returns the signature of the language of this formula.

Specified by:

getSignature in interface Formula

Specified by:

getSignature in class CLaw

Returns:

the signature of the language of this formula.

getAtoms

public Set<FolAtom> getAtoms()

Description copied from class: CLaw

Retrieves the set of propositions (atoms) contained in all formulas within this law.

Specified by:

getAtoms in class CLaw

Returns:

a `Set` of `FolAtom` objects representing all the propositions in the formulas that constitute this law.

toDefinite

public Set<CLaw> toDefinite()

Description copied from class: CLaw

Returns an equivalent definite causal law. A causal law is definite if it's head is a literal or a contradiction and all formulas are conjunctions of literals.

Specified by:

toDefinite in class CLaw

Returns:

the equivalent definite causal law if one exists.

getAllGrounded

public Set<CLaw> getAllGrounded()

Description copied from class: CLaw

Retrieves the set of all grounded instances of this causal law.

Specified by:

getAllGrounded in class CLaw

Returns:

a `Set` of `CLaw` objects representing all grounded instances of this causal law.

getFormulas

public Set<FolFormula> getFormulas()

Description copied from class: CLaw

Returns the set of formulas contained in this causal law, e.g. in a static law, this contains the head formula and the if formula.

Specified by:

getFormulas in class CLaw

Returns:

the set of formulas contained in this causal law.