edu.washington.cs.supple.render
Class DefaultShortcutCostFunction

java.lang.Object
  edu.washington.cs.supple.render.DefaultShortcutCostFunction

All Implemented Interfaces:

ShortcutCostFunction

public class DefaultShortcutCostFunction

extends java.lang.Object

implements ShortcutCostFunction

Author:

kgajos the default implementation of the shortcut cost function

Field Summary

protected GraphTransitionCount

transitionCount

Constructor Summary

DefaultShortcutCostFunction()

DefaultShortcutCostFunction(GraphTransitionCount tc)
Creates an instance of the shortcut cost function based on a transition count object that will keep providing up-to-date estimates of transitions through shortcuts as different rendering options are considered

Method Summary

float	getShortcutCost(Shortcut shortcut) The signature for this method will probably change at some point; it computes the cost associated with a particular shortcut.
GraphTransitionCount	getTransitionCount()
void	setTransitionCount(GraphTransitionCount count)

Methods inherited from class java.lang.Object

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

Field Detail

transitionCount

protected GraphTransitionCount transitionCount

Constructor Detail

DefaultShortcutCostFunction

public DefaultShortcutCostFunction(GraphTransitionCount tc)

Creates an instance of the shortcut cost function based on a transition count object that will keep providing up-to-date estimates of transitions through shortcuts as different rendering options are considered

Parameters:

tc - a graph transition count

DefaultShortcutCostFunction

public DefaultShortcutCostFunction()

Method Detail

getShortcutCost

public float getShortcutCost(Shortcut shortcut)

Description copied from interface: ShortcutCostFunction

The signature for this method will probably change at some point; it computes the cost associated with a particular shortcut. At the moment it assumes a fixed cost per access regardless of how the shortcut is rendered. This is clearly wrong but we will worry about it later

Specified by:

getShortcutCost in interface ShortcutCostFunction

Parameters:

shortcut - shortcut to be evaluated

Returns:

the associated cost (which depends on how much traffic goes through the shortcut)

getTransitionCount

public GraphTransitionCount getTransitionCount()

Specified by:

getTransitionCount in interface ShortcutCostFunction

Returns:

setTransitionCount

public void setTransitionCount(GraphTransitionCount count)

Specified by:

setTransitionCount in interface ShortcutCostFunction

Parameters:

count -