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

Fields inherited from class Attribute

name

Constructor Summary

Constructors

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

Method Summary

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.
java.lang.String	getValue(int index) Returns the value of this nominal attribute at the specified index.
static void	main(java.lang.String[] args)
int	size() Gets the size of this nominal attribute's domain.
java.lang.String	toString() Returns a string representation of this NominalAttribute.
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

Constructor Detail

NominalAttribute

public NominalAttribute()

Default constructor.

NominalAttribute

public NominalAttribute(java.lang.String name)

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

Parameters:

name - the name of this data set

Method Detail

addValue

public void addValue(java.lang.String value)

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

Parameters:

value - the attribute's new domain value

size

public int size()

Gets the size of this nominal attribute's domain.

Overrides:

size in class Attribute

Returns:

an int storing the size of the domain

getValue

public java.lang.String getValue(int index)

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

Parameters:

index - the attribute value's index

Returns:

the attribute value at the specified index

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

Returns:

the index of the specified value

Throws:

java.lang.Exception - if the value is not in the domain

toString

public java.lang.String toString()

Returns a string representation of this NominalAttribute.

Overrides:

toString in class Attribute

Returns:

a string representation of this NominalAttribute

validValue

public boolean validValue(java.lang.String value)

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

main

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