org.abora.white.spaces.basic
Class BasicSpace

java.lang.Object
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  +--org.abora.white.xpp.basic.Heaper
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        +--org.abora.white.spaces.basic.CoordinateSpace
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              +--org.abora.white.spaces.basic.BasicSpace

public class BasicSpace

extends CoordinateSpace

BasicSpace versus CoordinateSpace is not a type distinction in that there is no difference in contract with the client. BasicSpace exists as a convenience to the definer of new CoordinateSpaces. A new subclass of CoordinateSpace should be a subclass of BasicSpace iff there is only one coordinateSpace that corresponds to the new class. I.e., that the instances are not parameterized to yield different coordinate spaces. BasicSpace provides some conveniences (especially in Smalltalk) for defining a single canonical instance at dynamic initialization time, and always using it. As this class is irrelevent to CoordinateSpace clients, but is useful to those defining other kinds of coordinate spaces, it is an exellent example of something that would be classified as a "protected" class--something to be persued if we try to make modules more like classes.

Field Summary

Fields inherited from class org.abora.white.spaces.basic.CoordinateSpace

myAscending, myDescending, myEmptyRegion, myFullRegion, myIdentityDsp

Constructor Summary

protected	BasicSpace()
	BasicSpace(XnRegion emptyRegion, XnRegion fullRegion, Dsp identityDsp)
	BasicSpace(XnRegion emptyRegion, XnRegion fullRegion, Dsp identityDsp, OrderSpec ascending)
	BasicSpace(XnRegion emptyRegion, XnRegion fullRegion, Dsp identityDsp, OrderSpec ascending, OrderSpec descending)

Method Summary

int	actualHashForEqual() is equal to any basic space on the same category of positions
boolean	isEqual(Heaper anObject) is equal to any basic space on the same category of positions

Methods inherited from class org.abora.white.spaces.basic.CoordinateSpace

ascending, completeMapping, descending, emptyRegion, fetchAscending, fetchDescending, finishCreate, fullRegion, getAscending, getDescending, identityDsp, identityMapping, verify

Methods inherited from class org.abora.white.xpp.basic.Heaper

destroy, destruct, equals, hashForEqual, printContentsOn, printOn, sendSelfTo, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

BasicSpace

protected BasicSpace()

BasicSpace

public BasicSpace(XnRegion emptyRegion,
                  XnRegion fullRegion,
                  Dsp identityDsp,
                  OrderSpec ascending,
                  OrderSpec descending)

BasicSpace

public BasicSpace(XnRegion emptyRegion,
                  XnRegion fullRegion,
                  Dsp identityDsp)

BasicSpace

public BasicSpace(XnRegion emptyRegion,
                  XnRegion fullRegion,
                  Dsp identityDsp,
                  OrderSpec ascending)

Method Detail

actualHashForEqual

public int actualHashForEqual()

is equal to any basic space on the same category of positions

Overrides:

actualHashForEqual in class CoordinateSpace

isEqual

public boolean isEqual(Heaper anObject)

is equal to any basic space on the same category of positions

Specified by:

isEqual in class CoordinateSpace