Package org.tweetyproject.logics.pl.syntax

Class AssociativePlFormula

java.lang.Object

org.tweetyproject.logics.pl.syntax.PlFormula

org.tweetyproject.logics.pl.syntax.AssociativePlFormula

All Implemented Interfaces:

Iterable<PlFormula>, Collection<PlFormula>, List<PlFormula>, SequencedCollection<PlFormula>, Formula, AssociativeFormulaSupport.AssociativeSupportBridge, AssociativeFormula<PlFormula>, ClassicalFormula, Conjunctable, Disjunctable, Invertable, ProbabilityAware, SimpleLogicalFormula

Direct Known Subclasses:

Conjunction, Disjunction, ExclusiveDisjunction

public abstract class AssociativePlFormula
extends PlFormula
implements AssociativeFormula<PlFormula>, AssociativeFormulaSupport.AssociativeSupportBridge, Collection<PlFormula>

This class captures the common functionalities of formulas with an associative operation like conjunction, disjunction, etc.

Author:

Matthias Thimm, Tim Janus

Constructor Summary

Constructors

Constructor	Description
AssociativePlFormula()	Creates a new (empty) associative formula.
AssociativePlFormula(Collection<? extends PlFormula> formulas)	Creates a new associative formula with the given inner formulas.
AssociativePlFormula(PlFormula first, PlFormula second)	Creates a new associative formula with the two given formulae

Method Summary

Modifier and Type	Method	Description
void	add(int index, PlFormula element)
boolean	add(PlFormula f)
boolean	add(PlFormula... formulas)	Adds the specified elements to the end of this collection (optional operation).
boolean	addAll(int index, Collection<? extends PlFormula> c)
boolean	addAll(Collection<? extends PlFormula> c)
void	clear()
boolean	contains(Object o)
boolean	containsAll(Collection<?> c)
Signature	createEmptySignature()
boolean	equals(Object obj)
PlFormula	get(int index)
Set<Proposition>	getAtoms()	Processes the set of all atoms which appear in this formula
List<PlFormula>	getFormulas()
<C extends SimpleLogicalFormula> Set<C>	getFormulas(Class<C> cls)	Process the formulas of type C that are children of this associative formula
Set<PlFormula>	getLiterals()	Returns all literals, i.e.
Set<PlPredicate>	getPredicates()	Processes the set of all predicates which appear in this formula
PlSignature	getSignature()	Returns the signature of the language of this formula.
int	hashCode()
int	indexOf(Object o)
boolean	isEmpty()
Iterator<PlFormula>	iterator()
int	lastIndexOf(Object o)
ListIterator<PlFormula>	listIterator()
ListIterator<PlFormula>	listIterator(int index)
int	numberOfOccurrences(Proposition p)	Returns the number of occurrences of the given proposition within this formula
PlFormula	remove(int index)
boolean	remove(Object o)
boolean	removeAll(Collection<?> c)
boolean	retainAll(Collection<?> c)
PlFormula	set(int index, PlFormula element)
int	size()
List<PlFormula>	subList(int fromIndex, int toIndex)
Object[]	toArray()
Object[]	toArray(Object[] a)
String	toString()

Methods inherited from class org.tweetyproject.logics.pl.syntax.PlFormula

clone, collapseAssociativeFormulas, combineWithAnd, combineWithOr, complement, getModels, getModels, getPredicateCls, getPrimeImplicants, getUniformProbability, isClause, isConjunctiveClause, isLiteral, replace, resolvableWith, resolveWith, toBlakeCanonicalForm, toCnf, toDnf, toNnf, trim

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.tweetyproject.logics.commons.syntax.AssociativeFormulaSupport.AssociativeSupportBridge

createEmptyFormula, getEmptySymbol, getOperatorSymbol

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream, toArray

Methods inherited from interface java.lang.Iterable

forEach

Methods inherited from interface java.util.List

addFirst, addLast, getFirst, getLast, removeFirst, removeLast, replaceAll, reversed, sort, spliterator

Methods inherited from interface org.tweetyproject.logics.commons.syntax.interfaces.SimpleLogicalFormula

clone, getPredicateCls, isLiteral

Constructor Details

AssociativePlFormula

public AssociativePlFormula()

Creates a new (empty) associative formula.

AssociativePlFormula

public AssociativePlFormula(Collection<? extends PlFormula> formulas)

Creates a new associative formula with the given inner formulas.

Parameters:

formulas - a collection of formulas.

AssociativePlFormula

public AssociativePlFormula(PlFormula first,
 PlFormula second)

Creates a new associative formula with the two given formulae

Parameters:

first - a propositional formula.

second - a propositional formula.

Method Details

getPredicates

public Set<PlPredicate> getPredicates()

Description copied from interface: SimpleLogicalFormula

Processes the set of all predicates which appear in this formula

Specified by:

getPredicates in interface SimpleLogicalFormula

Specified by:

getPredicates in class PlFormula

Returns:

all predicates that appear in this formula

getFormulas

public List<PlFormula> getFormulas()

Specified by:

getFormulas in interface AssociativeFormula<PlFormula>

Returns:

all the formulas saved as childs in the associative formula

getFormulas

public <C extends SimpleLogicalFormula> Set<C> getFormulas(Class<C> cls)

Description copied from interface: AssociativeFormula

Process the formulas of type C that are children of this associative formula

Specified by:

getFormulas in interface AssociativeFormula<PlFormula>

Type Parameters:

C - the type of formulas

Parameters:

cls - the class structure defining the type of formulas which are searched.

Returns:

A set of formulas of type C which are members of the associative formula

getAtoms

public Set<Proposition> getAtoms()

Description copied from interface: SimpleLogicalFormula

Processes the set of all atoms which appear in this formula

Specified by:

getAtoms in interface SimpleLogicalFormula

Specified by:

getAtoms in class PlFormula

Returns:

The set of all atoms

getLiterals

public Set<PlFormula> getLiterals()

Description copied from class: PlFormula

Returns all literals, i.e. all formulas of the form "a" or "!a" where "a" is a proposition, that appear in this formula.

Specified by:

getLiterals in class PlFormula

Returns:

all literals appearing in this formula.

toString

public String toString()

Overrides:

toString in class Object

getSignature

public PlSignature getSignature()

Description copied from interface: Formula

Returns the signature of the language of this formula.

Specified by:

getSignature in interface Formula

Overrides:

getSignature in class PlFormula

Returns:

the signature of the language of this formula.

createEmptySignature

public Signature createEmptySignature()

Specified by:

createEmptySignature in interface AssociativeFormulaSupport.AssociativeSupportBridge

Returns:

An empty signature of the language of the AssociativeFormula implementation

numberOfOccurrences

public int numberOfOccurrences(Proposition p)

Description copied from class: PlFormula

Returns the number of occurrences of the given proposition within this formula

Specified by:

numberOfOccurrences in class PlFormula

Parameters:

p - some proposition

Returns:

the number of occurrences of the given proposition within this formula

hashCode

public int hashCode()

Specified by:

hashCode in interface Collection<PlFormula>

Specified by:

hashCode in interface List<PlFormula>

Specified by:

hashCode in interface SimpleLogicalFormula

Specified by:

hashCode in class PlFormula

equals

public boolean equals(Object obj)

Specified by:

equals in interface Collection<PlFormula>

Specified by:

equals in interface List<PlFormula>

Specified by:

equals in interface SimpleLogicalFormula

Specified by:

equals in class PlFormula

add

public boolean add(PlFormula f)

Specified by:

add in interface Collection<PlFormula>

Specified by:

add in interface List<PlFormula>

add

public boolean add(PlFormula... formulas)

Adds the specified elements to the end of this collection (optional operation).

Parameters:

formulas - to be appended to collection

Returns:

true if all elements were added, false otherwise

addAll

public boolean addAll(Collection<? extends PlFormula> c)

Specified by:

addAll in interface Collection<PlFormula>

Specified by:

addAll in interface List<PlFormula>

clear

public void clear()

Specified by:

clear in interface Collection<PlFormula>

Specified by:

clear in interface List<PlFormula>

contains

public boolean contains(Object o)

Specified by:

contains in interface Collection<PlFormula>

Specified by:

contains in interface List<PlFormula>

containsAll

public boolean containsAll(Collection<?> c)

Specified by:

containsAll in interface Collection<PlFormula>

Specified by:

containsAll in interface List<PlFormula>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Collection<PlFormula>

Specified by:

isEmpty in interface List<PlFormula>

iterator

public Iterator<PlFormula> iterator()

Specified by:

iterator in interface Collection<PlFormula>

Specified by:

iterator in interface Iterable<PlFormula>

Specified by:

iterator in interface List<PlFormula>

remove

public boolean remove(Object o)

Specified by:

remove in interface Collection<PlFormula>

Specified by:

remove in interface List<PlFormula>

removeAll

public boolean removeAll(Collection<?> c)

Specified by:

removeAll in interface Collection<PlFormula>

Specified by:

removeAll in interface List<PlFormula>

retainAll

public boolean retainAll(Collection<?> c)

Specified by:

retainAll in interface Collection<PlFormula>

Specified by:

retainAll in interface List<PlFormula>

size

public int size()

Specified by:

size in interface Collection<PlFormula>

Specified by:

size in interface List<PlFormula>

toArray

public Object[] toArray()

Specified by:

toArray in interface Collection<PlFormula>

Specified by:

toArray in interface List<PlFormula>

toArray

public Object[] toArray(Object[] a)

Specified by:

toArray in interface Collection<PlFormula>

Specified by:

toArray in interface List<PlFormula>

add

public void add(int index,
 PlFormula element)

Specified by:

add in interface List<PlFormula>

addAll

public boolean addAll(int index,
 Collection<? extends PlFormula> c)

Specified by:

addAll in interface List<PlFormula>

get

public PlFormula get(int index)

Specified by:

get in interface List<PlFormula>

indexOf

public int indexOf(Object o)

Specified by:

indexOf in interface List<PlFormula>

lastIndexOf

public int lastIndexOf(Object o)

Specified by:

lastIndexOf in interface List<PlFormula>

listIterator

public ListIterator<PlFormula> listIterator()

Specified by:

listIterator in interface List<PlFormula>

listIterator

public ListIterator<PlFormula> listIterator(int index)

Specified by:

listIterator in interface List<PlFormula>

remove

public PlFormula remove(int index)

Specified by:

remove in interface List<PlFormula>

set

public PlFormula set(int index,
 PlFormula element)

Specified by:

set in interface List<PlFormula>

subList

public List<PlFormula> subList(int fromIndex,
 int toIndex)

Specified by:

subList in interface List<PlFormula>