de.lmu.ifi.dbs.elki.converter
Class WekaAbstractAttribute<W extends WekaAbstractAttribute<W>>

java.lang.Object
  de.lmu.ifi.dbs.elki.converter.WekaAbstractAttribute<W>

All Implemented Interfaces:

WekaAttribute<W>, Comparable<W>

Direct Known Subclasses:

WekaNominalAttribute, WekaNumericAttribute, WekaStringAttribute

public abstract class WekaAbstractAttribute<W extends WekaAbstractAttribute<W>>
extends Object
implements WekaAttribute<W>

WekaAbstractAttribute handles the type of the attribute.

Author:

Arthur Zimek

Field Summary

private static int	NOMINAL_INDEX The index of the type NOMINAL in TYPES.
private static int	NUMERIC_INDEX The index of the type NUMERIC in TYPES.
private static int	STRING_INDEX The index of the type STRING in TYPES.
private int	TYPE Holds the type of this attribute.
private static String[]	TYPES Collects the possible types of attributes.

Fields inherited from interface de.lmu.ifi.dbs.elki.converter.WekaAttribute

NOMINAL, NUMERIC, STRING

Constructor Summary

protected

WekaAbstractAttribute(String type) Sets this attribute to the specified type.

Method Summary

boolean	equals(Object o) This equals o, if both are of the same type and this.compareTo((W) o) returns 0.
String	getType() Returns the type of the attribute.
int	hashCode() Returns the hashCode of the attribute value.
boolean	isNominal() Returns whether the attribute is weka nominal.
boolean	isNumeric() Returns whether the attribute is weka numeric.
boolean	isString() Returns whether the attribute is weka string.
String	toString() Returns the value of the attribute.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface de.lmu.ifi.dbs.elki.converter.WekaAttribute

getValue

Methods inherited from interface java.lang.Comparable

compareTo

Field Detail

TYPES

private static final String[] TYPES

Collects the possible types of attributes.

NOMINAL_INDEX

private static final int NOMINAL_INDEX

The index of the type NOMINAL in TYPES.

NUMERIC_INDEX

private static final int NUMERIC_INDEX

The index of the type NUMERIC in TYPES.

STRING_INDEX

private static final int STRING_INDEX

The index of the type STRING in TYPES.

TYPE

private final int TYPE

Holds the type of this attribute.

Constructor Detail

WekaAbstractAttribute

protected WekaAbstractAttribute(String type)
                         throws IllegalArgumentException

Sets this attribute to the specified type.

Parameters:

type - the type of this attribute - one of NOMINAL, NUMERIC, or STRING. Another value of the parameter type will result in an IllegalArgumentException.

Throws:

IllegalArgumentException - if the value of type is none of NOMINAL, NUMERIC, or STRING.

Method Detail

getType

public String getType()

Description copied from interface: WekaAttribute

Returns the type of the attribute.

Specified by:

getType in interface WekaAttribute<W extends WekaAbstractAttribute<W>>

Returns:

the type of the attribute, i.e. nominal, numeric, or string

See Also:

WekaAttribute.getType()

isNominal

public boolean isNominal()

Description copied from interface: WekaAttribute

Returns whether the attribute is weka nominal.

Specified by:

isNominal in interface WekaAttribute<W extends WekaAbstractAttribute<W>>

Returns:

true if the attribute is nominal, false otherwise

See Also:

WekaAttribute.isNominal()

isNumeric

public boolean isNumeric()

Description copied from interface: WekaAttribute

Returns whether the attribute is weka numeric.

Specified by:

isNumeric in interface WekaAttribute<W extends WekaAbstractAttribute<W>>

Returns:

true if the attribute is numeric, false otherwise

See Also:

WekaAttribute.isNumeric()

isString

public boolean isString()

Description copied from interface: WekaAttribute

Returns whether the attribute is weka string.

Specified by:

isString in interface WekaAttribute<W extends WekaAbstractAttribute<W>>

Returns:

true if the attribute is string, false otherwise

See Also:

WekaAttribute.isString()

toString

public String toString()

Returns the value of the attribute.

Overrides:

toString in class Object

See Also:

Object.toString()

equals

public boolean equals(Object o)

This equals o, if both are of the same type and this.compareTo((W) o) returns 0.

Specified by:

equals in interface WekaAttribute<W extends WekaAbstractAttribute<W>>

Overrides:

equals in class Object

Parameters:

o - another object to test for equality

Returns:

true if o is of the same type as this and this.compareTo((W)o)==0.

See Also:

Object.equals(java.lang.Object)

hashCode

public int hashCode()

Returns the hashCode of the attribute value.

Overrides:

hashCode in class Object

See Also:

Object.hashCode()