oracle.spatial.network.lod

Class DummyCostFunction

java.lang.Object

oracle.spatial.network.lod.DummyCostFunction

All Implemented Interfaces:

HeuristicCostFunction

public class DummyCostFunction
extends java.lang.Object
implements HeuristicCostFunction

The heuristic cost function implemented in this class always returns 0.

Since:

Oracle Database 11g Release 2 (11.2)

Constructor Summary

Constructors

Constructor and Description
DummyCostFunction(double cost)

Method Summary

Modifier and Type	Method and Description
double	getHeuristicCost(HeavyPointOnNet currentPoint, HeavyPointOnNet goalPoint) Returns the heuristic cost from the current point to the target point.
int[]	getUserDataCategories() Returns the required user data categories.
void	setUserData(PointOnNet point, NetworkExplorer ne) Sets the user data needed by the heuristic cost function for the input point.

Methods inherited from class java.lang.Object

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

Constructor Detail

DummyCostFunction

public DummyCostFunction(double cost)

Method Detail

getHeuristicCost

public double getHeuristicCost(HeavyPointOnNet currentPoint,
                               HeavyPointOnNet goalPoint)

Description copied from interface: HeuristicCostFunction

Returns the heuristic cost from the current point to the target point.

Specified by:

getHeuristicCost in interface HeuristicCostFunction

Parameters:

currentPoint - current point

goalPoint - target point

Returns:

estimated cost from current point to target point)

getUserDataCategories

public int[] getUserDataCategories()

Description copied from interface: HeuristicCostFunction

Returns the required user data categories.

Specified by:

getUserDataCategories in interface HeuristicCostFunction

Returns:

setUserData

public void setUserData(PointOnNet point,
                        NetworkExplorer ne)
                 throws LODNetworkException

Description copied from interface: HeuristicCostFunction

Sets the user data needed by the heuristic cost function for the input point.

Specified by:

setUserData in interface HeuristicCostFunction

Throws:

LODNetworkException