edu.gwu.wordnet
Class Pointer

java.lang.Object
  edu.gwu.wordnet.Pointer

public class Pointer

extends java.lang.Object

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.

Nested Class Summary

protected 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

protected FileBackedDictionary	dictionary
protected int	index The index of this Pointer within the array of Pointer's in the source Synset.
protected PointerType	pointerType
protected PointerTarget	source
protected Synset	synset
protected Pointer.TargetIndex	targetIndex An index that can be used to retrieve the target.

Method Summary

boolean	equals(java.lang.Object object)
PointerTarget	getSource()
PointerTarget	getTarget()
PointerType	getType()
int	hashCode()
boolean	isLexical()
protected PointerTarget	resolveTarget(Synset synset, int index)
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

dictionary

protected FileBackedDictionary dictionary

synset

protected Synset synset

index

protected int index

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

pointerType

protected PointerType pointerType

source

protected PointerTarget source

targetIndex

protected Pointer.TargetIndex targetIndex

An index that can be used to retrieve the target. The first time this is used, it acts as an external key; subsequent uses, in conjunction with FileBackedDictionary's caching mechanism, can be thought of as a weak reference.

Method Detail

equals

public boolean equals(java.lang.Object object)

hashCode

public int hashCode()

toString

public java.lang.String toString()

getType

public PointerType getType()

isLexical

public boolean isLexical()

resolveTarget

protected PointerTarget resolveTarget(Synset synset,
                                      int index)

getSource

public PointerTarget getSource()

getTarget

public PointerTarget getTarget()