edu.stanford.nlp.trees
Class Category

java.lang.Object
  |
  +--edu.stanford.nlp.trees.AbstractLabel
        |
        +--edu.stanford.nlp.trees.StringLabel
              |
              +--edu.stanford.nlp.trees.Category

All Implemented Interfaces:

Comparable, HasCategory, Label

public class Category

extends StringLabel

implements HasCategory

A Category object acts as a Label by containing a String that is a part-of-speech category.

Field Summary

static String

EMPTYSTRING The empty category.

Constructor Summary

Category()
Constructs a Category object.

Category(Label lab)
Creates a new category whose category value is the value of any class that supports the Label interface.

Category(String category)
Constructs a Category object.

Method Summary

String	category() Return the category value of the label (or null if none).
static LabelFactory	factory() Return a factory for this kind of label (i.e., Category).
LabelFactory	labelFactory() Return a factory for this kind of label (i.e., Category).
void	setCategory(String category) Set the category value for the label (if one is stored).

Methods inherited from class edu.stanford.nlp.trees.StringLabel

setFromString, setValue, value

Methods inherited from class edu.stanford.nlp.trees.AbstractLabel

compareTo, equals, hashCode, toString

Methods inherited from class java.lang.Object

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

Field Detail

EMPTYSTRING

public static final String EMPTYSTRING

The empty category.

See Also:

Constant Field Values

Constructor Detail

Category

public Category()

Constructs a Category object.

Category

public Category(String category)

Constructs a Category object.

Parameters:

category - The name of the category

Category

public Category(Label lab)

Creates a new category whose category value is the value of any class that supports the Label interface.

Parameters:

lab - The label to be used as the basis of the new Category

Method Detail

category

public String category()

Description copied from interface: HasCategory

Return the category value of the label (or null if none).

Specified by:

category in interface HasCategory

Returns:

String the category value for the label

setCategory

public void setCategory(String category)

Description copied from interface: HasCategory

Set the category value for the label (if one is stored).

Specified by:

setCategory in interface HasCategory

labelFactory

public LabelFactory labelFactory()

Return a factory for this kind of label (i.e., Category). The factory returned is always the same one (a singleton).

Specified by:

labelFactory in interface Label

Overrides:

labelFactory in class StringLabel

Returns:

The label factory

factory

public static LabelFactory factory()

Return a factory for this kind of label (i.e., Category). The factory returned is always the same one (a singleton).

Returns:

The label factory