Package net.didion.jwnl.data

Class Pointer

java.lang.Object

net.didion.jwnl.data.Pointer

All Implemented Interfaces:

Serializable

public class Pointer
extends Object
implements Serializable

A Pointer encodes a lexical or semantic relationship between WordNet entities. A lexical relationship holds between Words; a semantic relationship holds between Synsets. Relationships are directional: the two roles of a relationship are the source and target. Relationships are typed: the type of a relationship is a PointerType, and can be retrieved via getType.

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	Pointer.TargetIndex	This class is used to avoid paging in the target before it is required, and to prevent keeping a large portion of the database resident once the target has been queried.

Field Summary

Fields

Modifier and Type	Field	Description
private String	_cachedToString
private int	_index	The index of this Pointer within the array of Pointer's in the source Synset.
private PointerType	_pointerType
private PointerTarget	_source	The source of this poiner.
private PointerTarget	_target	Cache for the target after it has been resolved.
private Pointer.TargetIndex	_targetIndex	An index that can be used to retrieve the target.
(package private) static final long	serialVersionUID

Constructor Summary

Constructors

Constructor	Description
Pointer(PointerTarget source, int index, PointerType pointerType, POS targetPOS, long targetOffset, int targetIndex)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object object)
PointerTarget	getSource()	Get the source of this pointer.
int	getSourceIndex()
PointerTarget	getTarget()	Get the actual target of this pointer.
int	getTargetIndex()
long	getTargetOffset()	Get the offset of the target within the target synset.
POS	getTargetPOS()
Synset	getTargetSynset()	Get the synset that is a) the target of this pointer, or b) the * synset that contains the target of this pointer.
PointerType	getType()
int	hashCode()
boolean	isLexical()	True if this pointer's source is a Word
private void	readObject(ObjectInputStream in)
String	toString()

Methods inherited from class java.lang.Object

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

Field Details

serialVersionUID

static final long serialVersionUID

See Also:

• Constant Field Values

_index

private int _index

The index of this Pointer within the array of Pointer's in the source Synset. Used by equal.

_pointerType

private PointerType _pointerType

_source

private PointerTarget _source

The source of this poiner. If the pointer applies to all words in the parent synset, then source and synset are the same, otherwise source is the specific Word object that this pointer applies to.

_targetIndex

private Pointer.TargetIndex _targetIndex

An index that can be used to retrieve the target.

_target

private transient PointerTarget _target

Cache for the target after it has been resolved.

_cachedToString

private transient String _cachedToString

Constructor Details

Pointer

public Pointer(PointerTarget source,
 int index,
 PointerType pointerType,
 POS targetPOS,
 long targetOffset,
 int targetIndex)

Method Details

equals

public boolean equals(Object object)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object

getSourceIndex

public int getSourceIndex()

getType

public PointerType getType()

isLexical

public boolean isLexical()

True if this pointer's source is a Word

getSource

public PointerTarget getSource()

Get the source of this pointer.

getTarget

public PointerTarget getTarget()
                        throws JWNLException

Get the actual target of this pointer.

Throws:

JWNLException

getTargetSynset

public Synset getTargetSynset()
                       throws JWNLException

Get the synset that is a) the target of this pointer, or b) the * synset that contains the target of this pointer.

Throws:

JWNLException

getTargetOffset

public long getTargetOffset()

Get the offset of the target within the target synset. If the offset is * 0, then this pointer applies to all words in the target.

getTargetIndex

public int getTargetIndex()

getTargetPOS

public POS getTargetPOS()

readObject

private void readObject(ObjectInputStream in)
                 throws IOException,
ClassNotFoundException

Throws:

IOException

ClassNotFoundException