com.meyling.principia.logic.basic
Class PropositionVariable

java.lang.Object
  com.meyling.principia.argument.AbstractArgument
      com.meyling.principia.argument.AbstractArgumentList
          com.meyling.principia.logic.basic.AbstractFormula
              com.meyling.principia.logic.basic.PropositionVariable

All Implemented Interfaces:

Argument, Formula

public class PropositionVariable

extends AbstractFormula

implements Argument, Formula

Represents an arbitrary logical proposition.

Version:

$Revision: 1.6 $

Author:

Michael Meyling

Constructor Summary

PropositionVariable(Argument[] arguments)
Constructs a proposition variable.

PropositionVariable(int number)
Constructs certain proposition variable.

Method Summary

Argument	create(Argument[] arguments) Create a new Argument with given arguments.
SubjectVariables	getBoundSubjectVariables() Get all bounded subject variables.
SubjectVariables	getFreeSubjectVariables() Get all free subject variables.
int	getNumber() Get the identity number of this proposition variable.
Formula	getPartFormula(int i) Get the requested part formula
int	getPartFormulaSize() Get the number of part formulas that this formula contains.
SubjectVariables	getSubjectVariables() Get all subject variables that occur in this formula.
String	toString() Get the argument in String form.

Methods inherited from class com.meyling.principia.logic.basic.AbstractFormula

createPattern, replaceBoundSubjectVariable, replaceBoundSubjectVariables

Methods inherited from class com.meyling.principia.argument.AbstractArgumentList

copy, getArgument, getArgumentSize

Methods inherited from class com.meyling.principia.argument.AbstractArgument

containsPatternVariables, equals, getHighestNumber, getPatternVariables, getReplacementParents, getSearchParents, hashCode, matches, matches, replace, replace, replace, replaceMatches

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.meyling.principia.argument.Argument

containsPatternVariables, copy, equals, getArgument, getArgumentSize, getPatternVariables, getReplacementParents, getSearchParents, hashCode, matches, matches, replace, replace, replace, replaceMatches

Methods inherited from interface com.meyling.principia.logic.basic.Formula

replaceBoundSubjectVariable, replaceBoundSubjectVariables

Constructor Detail

PropositionVariable

public PropositionVariable(Argument[] arguments)
                    throws ArgumentException

Constructs a proposition variable.

Parameters:

arguments - first argument is number of this proposition variable

Throws:

ArgumentException - if there is not exactly one argument that is an instance of Counter

PropositionVariable

public PropositionVariable(int number)
                    throws ArgumentException

Constructs certain proposition variable.

Parameters:

number - number of proposition variable

Throws:

ArgumentException - if Counter couldn't be created

Method Detail

getNumber

public int getNumber()

Get the identity number of this proposition variable.

Returns:

identity number

getPartFormulaSize

public final int getPartFormulaSize()

Description copied from interface: Formula

Get the number of part formulas that this formula contains.

Specified by:

getPartFormulaSize in interface Formula

Specified by:

getPartFormulaSize in class AbstractFormula

Returns:

always 0

getPartFormula

public final Formula getPartFormula(int i)

Description copied from interface: Formula

Get the requested part formula

Specified by:

getPartFormula in interface Formula

Specified by:

getPartFormula in class AbstractFormula

Returns:

will never occur

getFreeSubjectVariables

public final SubjectVariables getFreeSubjectVariables()

Description copied from interface: Formula

Get all free subject variables.

Specified by:

getFreeSubjectVariables in interface Formula

Specified by:

getFreeSubjectVariables in class AbstractFormula

getBoundSubjectVariables

public final SubjectVariables getBoundSubjectVariables()

Description copied from interface: Formula

Get all bounded subject variables.

Specified by:

getBoundSubjectVariables in interface Formula

Specified by:

getBoundSubjectVariables in class AbstractFormula

getSubjectVariables

public final SubjectVariables getSubjectVariables()

Description copied from interface: Formula

Get all subject variables that occur in this formula.

Specified by:

getSubjectVariables in interface Formula

Specified by:

getSubjectVariables in class AbstractFormula

create

public final Argument create(Argument[] arguments)
                      throws ArgumentException

Description copied from interface: Argument

Create a new Argument with given arguments.

Specified by:

create in interface Argument

Specified by:

create in class AbstractArgumentList

Throws:

ArgumentException

toString

public final String toString()

Description copied from interface: Argument

Get the argument in String form.

Specified by:

toString in interface Argument

Specified by:

toString in class AbstractArgumentList