uk.ac.ed.epcc.webapp.charts.strategy

Class HashMapper<T>

java.lang.Object

uk.ac.ed.epcc.webapp.charts.strategy.HashMapper<T>

Type Parameters:

T - type of object being mapped

All Implemented Interfaces:

Labelled, LabelledSetRangeMapper<T>, PlotStrategy, RangeMapper<T>, SetRangeMapper<T>

public class HashMapper<T>
extends java.lang.Object
implements LabelledSetRangeMapper<T>

HashMapper base class for LabeledTransform Mappers that builds the label vector and the mappings as data is seen. Sets are ordered according to the order the first data from that set was seen. The Rangemapper interface is provided by composition

Constructor Summary

Constructors

Constructor and Description
HashMapper(AppContext conn, RangeMapper<T> r, HashLabeller<T,java.lang.Number> l)

Method Summary

Modifier and Type	Method and Description
AppContext	getContext()
java.util.Vector<java.lang.String>	getLabels() What are the labels corresponding to the Sets
float	getOverlapp(T o, java.util.Date start, java.util.Date end) get the contribution of the object to the specified time period.
int	getSet(T o) which dataset/plot does this object contribute to.
int	nSets() How many sets can the mapper map to
boolean	overlapps(T o, java.util.Date start, java.util.Date end) does this object overlap with the specified time period.

Methods inherited from class java.lang.Object

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

Constructor Detail

HashMapper

public HashMapper(AppContext conn,
                  RangeMapper<T> r,
                  HashLabeller<T,java.lang.Number> l)

Method Detail

getContext

public AppContext getContext()

getLabels

public java.util.Vector<java.lang.String> getLabels()

Description copied from interface: Labelled

What are the labels corresponding to the Sets

Specified by:

getLabels in interface Labelled

Returns:

Vector of Strings

getOverlapp

public float getOverlapp(T o,
                         java.util.Date start,
                         java.util.Date end)
                  throws java.lang.Exception

Description copied from interface: RangeMapper

get the contribution of the object to the specified time period.

Specified by:

getOverlapp in interface RangeMapper<T>

start - period start as Date

end - period end as Date

Returns:

value of overlapp.

Throws:

java.lang.Exception

getSet

public int getSet(T o)

Description copied from interface: SetRangeMapper

which dataset/plot does this object contribute to.

Specified by:

getSet in interface SetRangeMapper<T>

Returns:

int

nSets

public int nSets()

Description copied from interface: Labelled

How many sets can the mapper map to

Specified by:

nSets in interface Labelled

Returns:

int number of sets

overlapps

public boolean overlapps(T o,
                         java.util.Date start,
                         java.util.Date end)

Description copied from interface: RangeMapper

does this object overlap with the specified time period.

Specified by:

overlapps in interface RangeMapper<T>

start - period start as Date

end - period end as Date

Returns:

true if overlapps