edu.columbia.surge.hashImpl
Class FDRefH

java.lang.Object
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  +--java.util.AbstractMap
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        +--java.util.HashMap
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              +--edu.columbia.surge.hashImpl.FDH
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                    +--edu.columbia.surge.hashImpl.FDRefH

public class FDRefH

extends FDH

implements FDRef

This class is inherrited from the FDH class and implements the FDRef interface. User creates instances of this class whenever they want to specify a hole in a FD, it has one instance variable which will store the hole of a FD. During the unification process, the path of the hole stored will be included in the set statement.

See Also:

FDH, FDNull, FDRef, Serialized Form

Field Summary

protected java.lang.Object

ref A variable to store the hole of a FD

Constructor Summary

FDRefH(java.lang.Object ref)
Constructor.

Method Summary

java.lang.Object

getRef() A method that returns the referrence object stored.

Methods inherited from class edu.columbia.surge.hashImpl.FDH

checkPath, checkPath, computePathDifference, getPath, getPath, putPath, putPath, putPathOverride, putPathOverride, stackToPath, stringToArray, toString, toString, toXML

Methods inherited from class java.util.HashMap

clear, clone, containsKey, containsValue, entrySet, get, isEmpty, keySet, put, putAll, remove, size, values

Methods inherited from class java.util.AbstractMap

equals, hashCode

Methods inherited from class java.lang.Object

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

Field Detail

ref

protected java.lang.Object ref

A variable to store the hole of a FD

Constructor Detail

FDRefH

public FDRefH(java.lang.Object ref)

Constructor. It takes in a ref, i.e., the hole of the clause and stores it.

Parameters:

ref - the hole object

Method Detail

getRef

public java.lang.Object getRef()

A method that returns the referrence object stored.

Specified by:

getRef in interface FDRef

Returns:

the reference object