net.sf.tweety.arg.delp

Class DelpAnswer

java.lang.Object

net.sf.tweety.commons.Answer

net.sf.tweety.arg.delp.DelpAnswer

class DelpAnswer
extends Answer

Wrapping a generic answer from a reasoner in order to allow UNDECIDED in addition to the traditional YES and NO. We ensure backward compatibility by mapping those 3 values to Double values as follows:

• true  <=> YES       <=> Double(0)

• false <=  NO        <=> negative number

• false <=  UNDECIDED <=> positive number

Note that only true can be reliably mapped to YES, whereas false remains ambiguous.

Author:

Linda.Briesemeister

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
(package private) static class	DelpAnswer.Type

Field Summary

Fields

Modifier and Type	Field and Description
private DelpAnswer.Type	currentType

Constructor Summary

Constructors

Constructor and Description
DelpAnswer(BeliefBase beliefBase, Formula query)

Method Summary

Modifier and Type	Method and Description
void	appendText(java.lang.String text) Appends the given text to this answer's text.
boolean	getAnswerBoolean() Returns the boolean form of this answer.
java.lang.Double	getAnswerDouble() Returns the double form of this answer.
DelpAnswer.Type	getType() Obtain current type of this answer.
void	setAnswer(boolean answer) The answer of the query in boolean form.
void	setAnswer(java.lang.Double answer) The answer of the query in boolean form.
void	setType(DelpAnswer.Type type)

Methods inherited from class net.sf.tweety.commons.Answer

getKnowledgeBase, getQuery, getText, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

currentType

private DelpAnswer.Type currentType

Constructor Detail

DelpAnswer

DelpAnswer(BeliefBase beliefBase,
           Formula query)

Method Detail

getType

public DelpAnswer.Type getType()

Obtain current type of this answer.

Returns:

Type of answer as in YES, NO, UNDECIDED, or UNKNOWN

setType

public void setType(DelpAnswer.Type type)

appendText

public void appendText(java.lang.String text)

Description copied from class: Answer

Appends the given text to this answer's text.

Overrides:

appendText in class Answer

Parameters:

text - a string.

setAnswer

public void setAnswer(boolean answer)

Description copied from class: Answer

The answer of the query in boolean form.

Overrides:

setAnswer in class Answer

Parameters:

answer - a boolean

setAnswer

public void setAnswer(java.lang.Double answer)

Description copied from class: Answer

The answer of the query in boolean form.

Overrides:

setAnswer in class Answer

Parameters:

answer - a boolean

getAnswerBoolean

public boolean getAnswerBoolean()

Description copied from class: Answer

Returns the boolean form of this answer.

Overrides:

getAnswerBoolean in class Answer

Returns:

the boolean form of this answer.

getAnswerDouble

public java.lang.Double getAnswerDouble()

Description copied from class: Answer

Returns the double form of this answer.

Overrides:

getAnswerDouble in class Answer

Returns:

the double form of this answer.