Class NominalAttribute

java.lang.Object

Attribute

NominalAttribute

public class NominalAttribute
extends Attribute

Stores information for a nominal attribute. A nominal attribute has has a name and a domain.

Field Summary

Fields

Modifier and Type	Field and Description
(package private) java.util.ArrayList<java.lang.String>	domain a list of strings for the domain of nominal attributes
(package private) boolean	sorted a Boolean indicating whether the nominal domain is sorted

Fields inherited from class Attribute

name

Constructor Summary

Constructors

Constructor and Description
NominalAttribute() Default constructor.
NominalAttribute(java.lang.String name) Explicit constructor.

Method Summary

Methods

Modifier and Type	Method and Description
void	addValue(java.lang.String value) Adds a new nominal value to the domain of this nominal attribute.
int	getIndex(java.lang.String value) Returns the index of the specified value index for this nominal attribute.
int	getSize() Gets the size of this nominal attribute's domain.
java.lang.String	getValue(int index) Returns the value of this nominal attribute at the specified index.
static void	main(java.lang.String[] args)
java.lang.String	toString() Returns a string representation of this attribute.
boolean	validValue(java.lang.String value) Returns whether the value is valid for a nominal attribute

Methods inherited from class Attribute

getName, setName

Methods inherited from class java.lang.Object

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

Field Detail

domain

java.util.ArrayList<java.lang.String> domain

a list of strings for the domain of nominal attributes

sorted

boolean sorted

a Boolean indicating whether the nominal domain is sorted

Constructor Detail

NominalAttribute

public NominalAttribute()

Default constructor.

NominalAttribute

public NominalAttribute(java.lang.String name)
                 throws java.lang.Exception

Explicit constructor. Creates a nominal attribute with the specified name.

Parameters:

name - the name of this data set

Throws:

java.lang.Exception

Method Detail

addValue

public void addValue(java.lang.String value)
              throws java.lang.Exception

Adds a new nominal value to the domain of this nominal attribute.

Parameters:

value - the attribute's new domain value

Throws:

java.lang.Exception - if an exception occurs

getSize

public int getSize()
            throws java.lang.Exception

Gets the size of this nominal attribute's domain.

Overrides:

getSize in class Attribute

Returns:

an int storing the size of the domain

Throws:

java.lang.Exception

getValue

public java.lang.String getValue(int index)
                          throws java.lang.Exception

Returns the value of this nominal attribute at the specified index.

Parameters:

index - the attribute value's index

Throws:

java.lang.Exception - if an exception occurs

getIndex

public int getIndex(java.lang.String value)
             throws java.lang.Exception

Returns the index of the specified value index for this nominal attribute.

Parameters:

value - the attribute's value

Throws:

java.lang.Exception - if an exception occurs

toString

public java.lang.String toString()

Returns a string representation of this attribute.

Overrides:

toString in class Attribute

Returns:

a string representation of this attribute

validValue

public boolean validValue(java.lang.String value)
                   throws java.lang.Exception

Returns whether the value is valid for a nominal attribute

Parameters:

value - the value for testing

Returns:

true if the value is valid; false otherwise

Throws:

java.lang.Exception - if an exception occurs

main

public static void main(java.lang.String[] args)