com.meyling.principia.logic.basic
Class Negation

java.lang.Object
  |
  +--com.meyling.principia.argument.AbstractArgument
        |
        +--com.meyling.principia.argument.AbstractArgumentList
              |
              +--com.meyling.principia.logic.basic.AbstractFormula
                    |
                    +--com.meyling.principia.logic.basic.Negation

All Implemented Interfaces:

Argument, Formula

public class Negation

extends AbstractFormula

implements Argument, Formula

Logical negation, logical "not".

Version:

$Revision 0.00.50$

Author:

Michael Meyling

Field Summary

private Formula

formula formula to negate

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

arguments

Constructor Summary

Negation(Argument[] arguments)
Constructs negation of first argument.

Negation(Formula formula)
Constructs negation of formula.

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.
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, 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, registerNatives, 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

Field Detail

formula

private final Formula formula

formula to negate

Constructor Detail

Negation

public Negation(Argument[] arguments)
         throws ArgumentException

Constructs negation of first argument.

Parameters:

arguments - formula to negate

Throws:

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

Negation

public Negation(Formula formula)
         throws ArgumentException

Constructs negation of formula.

Parameters:

formula - formula to negate

Throws:

ArgumentException - should never occur

Method Detail

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

Overrides:

getPartFormulaSize in class AbstractFormula

Returns:

1, the number of part formulas

getPartFormula

public final Formula getPartFormula(int i)

Description copied from interface: Formula

Get the requested part formula

Specified by:

getPartFormula in interface Formula

Overrides:

getPartFormula in class AbstractFormula

Following copied from interface: com.meyling.principia.logic.basic.Formula

Parameters:

i - number of part formula (starting with 0)

Returns:

i-th part formula

Throws:

IllegalArgumentException - if i is not inbetween 0 and Formula.getPartFormulaSize() - 1

getFreeSubjectVariables

public final SubjectVariables getFreeSubjectVariables()

Description copied from interface: Formula

Get all free subject variables.

Specified by:

getFreeSubjectVariables in interface Formula

Overrides:

getFreeSubjectVariables in class AbstractFormula

Following copied from interface: com.meyling.principia.logic.basic.Formula

Returns:

all free subject variables

getBoundSubjectVariables

public final SubjectVariables getBoundSubjectVariables()

Description copied from interface: Formula

Get all bounded subject variables.

Specified by:

getBoundSubjectVariables in interface Formula

Overrides:

getBoundSubjectVariables in class AbstractFormula

Following copied from interface: com.meyling.principia.logic.basic.Formula

Returns:

all bounded subject variables

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

Overrides:

getSubjectVariables in class AbstractFormula

Following copied from interface: com.meyling.principia.logic.basic.Formula

Returns:

all subject variables

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

Overrides:

create in class AbstractArgumentList

Following copied from interface: com.meyling.principia.argument.Argument

Parameters:

arguments - with these arguments the operator should be created

Returns:

new constructed Argument

Throws:

ArgumentException - if creation failed

toString

public final String toString()

Description copied from interface: Argument

Get the argument in String form.

Specified by:

toString in interface Argument

Overrides:

toString in class AbstractArgumentList

Following copied from interface: com.meyling.principia.argument.Argument

Returns:

readable formula