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oracle.spatial.network.lod
Class DummyLinkCostCalculator

java.lang.Object
oracle.spatial.network.lod.DummyLinkCostCalculator

All Implemented Interfaces:

LinkCostCalculator

public class DummyLinkCostCalculator

extends java.lang.Object

implements LinkCostCalculator

This implementation of LinkCostCalculator always returns 0 for link cost. This class is implemented as a singleton.

Since:

11gR2

Method Summary

double	getLinkCost(LogicalLink link, long fromNodeId) Computes the cost of the specified link.
static LinkCostCalculator	getLinkCostCalculator()
boolean	requiresUserData() Returns true if calculating link cost requires user data information.

Methods inherited from class java.lang.Object

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

Method Detail

getLinkCostCalculator

public static LinkCostCalculator getLinkCostCalculator()

getLinkCost

public double getLinkCost(LogicalLink link,
                          long fromNodeId)

Description copied from interface: LinkCostCalculator

Computes the cost of the specified link.

Specified by:

getLinkCost in interface LinkCostCalculator

Parameters:

link - a standalone logical link

fromNodeId - ID of the node from which the network traverser is traveling from. It is used to indicate travel direction on the link. This ID must be either the start node or end node ID of the link.

Returns:

link cost

requiresUserData

public boolean requiresUserData()

Description copied from interface: LinkCostCalculator

Returns true if calculating link cost requires user data information.

Specified by:

requiresUserData in interface LinkCostCalculator

Returns:

true if calculating link cost requires user data information, false otherwise.

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