Package net.sf.tweety.logics.commons.syntax

Class TermAdapter<T>

java.lang.Object

net.sf.tweety.logics.commons.syntax.TermAdapter<T>

Type Parameters:

T - The type of the value saved in the term, this might be a string if the term is a constant or a variable, or it might be an integer if the term is a number term.

All Implemented Interfaces:

LogicStructure, Term<T>

Direct Known Subclasses:

FunctionalTerm, NumberTerm, StringTerm

public abstract class TermAdapter<T>
extends Object
implements Term<T>

Abstract base class implementing the substitute(), getSort(), getTerms(), and containsTermsOfType() methods in a way it is useful for terms.

Author:

Tim Janus, Matthias Thimm

Field Summary

Fields

Modifier and Type	Field	Description
protected T	value

Constructor Summary

Constructors

Constructor	Description
TermAdapter(T value)	Default-Ctor: Creates an TermAdapter with the Sort "Thing"
TermAdapter(T value, Sort sort)	Ctor: Creates a TermAdapter with the given Sort

Method Summary

Modifier and Type	Method	Description
abstract TermAdapter<?>	clone()	Creates a deep copy of the term
<C extends Term<?>> boolean	containsTermsOfType(Class<C> cls)	Checks if this logical structure contains at least one term of type C.
boolean	equals(Object obj)
T	get()
Sort	getSort()
Set<Term<?>>	getTerms()
<C extends Term<?>> Set<C>	getTerms(Class<C> cls)	Processes the set containing all terms of type C.
int	hashCode()
void	set(T value)	Changes the java-object representation of the term to the given value.
Term<?>	substitute(Term<?> v, Term<?> t)	Substitutes all occurrences of term "v" in this term by term "t" and returns the new term.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

value

protected T value

Constructor Detail

TermAdapter

public TermAdapter(T value)

Default-Ctor: Creates an TermAdapter with the Sort "Thing"

Parameters:

value - the value of this term

TermAdapter

public TermAdapter(T value,
                   Sort sort)

Ctor: Creates a TermAdapter with the given Sort

Parameters:

value - the value of this term

sort - The Sort (Type) of the TermAdapter instance

Method Detail

getTerms

public Set<Term<?>> getTerms()

Specified by:

getTerms in interface LogicStructure

Returns:

a set containing all terms of this logical structure

getTerms

public <C extends Term<?>> Set<C> getTerms(Class<C> cls)

Description copied from interface: LogicStructure

Processes the set containing all terms of type C. This method uses the equals method of the given Class and therefore does not add terms which are sub classes of type C to the set.

Specified by:

getTerms in interface LogicStructure

Type Parameters:

C - the type of terms

Parameters:

cls - The Class structure containing type information about the searched term

Returns:

A set containing all terms of type C of this logical structure

containsTermsOfType

public <C extends Term<?>> boolean containsTermsOfType(Class<C> cls)

Description copied from interface: LogicStructure

Checks if this logical structure contains at least one term of type C. This method is a shortcut for !getTerms(TermImplementation.class).isEmpty().

Specified by:

containsTermsOfType in interface LogicStructure

Type Parameters:

C - the type of terms

Parameters:

cls - The class structure representing the type C of the term.

Returns:

True if this logical structure contains at least one term of type C or false otherwise.

substitute

public Term<?> substitute(Term<?> v,
                          Term<?> t)
                   throws IllegalArgumentException

Description copied from interface: Term

Substitutes all occurrences of term "v" in this term by term "t" and returns the new term.

Specified by:

substitute in interface Term<T>

Parameters:

v - the term to be substituted.

t - the term to substitute.

Returns:

a term where every occurrence of "v" is replaced by "t".

Throws:

IllegalArgumentException - if "v" and "t" are of different sorts (NOTE: this exception is only thrown when "v" actually appears in this formula)

getSort

public Sort getSort()

Specified by:

getSort in interface Term<T>

Returns:

the sort (type) of this term.

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

clone

public abstract TermAdapter<?> clone()

Description copied from interface: Term

Creates a deep copy of the term

Specified by:

clone in interface Term<T>

Overrides:

clone in class Object

Returns:

the clone

toString

public String toString()

Overrides:

toString in class Object

set

public void set(T value)

Description copied from interface: Term

Changes the java-object representation of the term to the given value.

Specified by:

set in interface Term<T>

Parameters:

value - The new java-object representation of the term.

get

public T get()

Specified by:

get in interface Term<T>

Returns:

the java-object representation of the term.