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

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) A main method for testing.
java.lang.String	toString() Returns a string representation of this NominalAttribute.

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)
              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 the value can not be added

getSize

public int getSize()

Gets the size of this nominal attribute's domain.

Overrides:

getSize in class Attribute

Returns:

an int storing the size of the domain

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 the index is out of bounds

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 the value is illegal

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

main

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

A main method for testing.