oracle.spatial.network.lod

Interface LinkLevelSelector

All Known Implementing Classes:

DummyLinkLevelSelector, DynamicLinkLevelSelector

public interface LinkLevelSelector

A LinkLevelSelector selects the link level for the next node to expand on.

Since:

11gR2

Method Summary

Modifier and Type	Method and Description
int	getLinkLevelToExpand(LODAnalysisInfo ai) Returns the link level for the next node to expand on.
int[]	getUserDataCategories() Returns the required user data categories.
boolean	requiresAnalysisInfo() Whether analysis info is required.
void	reset(HeavyPointOnNet[][] points) Resets the attributes of this link level selector according to the input points of interest.
void	setNetworkAnalyst(NetworkAnalyst analyst) This method allows caller to pass the network analyst object to this link level selector, so that the link level selector can call the analysis functions provided by the network analyst, or access the network explorer associated with the network analyst.

Method Detail

getLinkLevelToExpand

int getLinkLevelToExpand(LODAnalysisInfo ai)
                  throws LODNetworkException

Returns the link level for the next node to expand on.

Parameters:

ai - analysis information

Returns:

Throws:

LODNetworkException

requiresAnalysisInfo

boolean requiresAnalysisInfo()

Whether analysis info is required.

Returns:

true is analysis info cannot be null; false, otherwise.

getUserDataCategories

int[] getUserDataCategories()

Returns the required user data categories.

Returns:

reset

void reset(HeavyPointOnNet[][] points)
    throws LODNetworkException

Resets the attributes of this link level selector according to the input points of interest.

Parameters:

points - points of interest. Each member of the array is an array of equivalent points. For example, in a road network, equivalent points can be the points on either side of a two way road.

Throws:

LODNetworkException

setNetworkAnalyst

void setNetworkAnalyst(NetworkAnalyst analyst)

This method allows caller to pass the network analyst object to this link level selector, so that the link level selector can call the analysis functions provided by the network analyst, or access the network explorer associated with the network analyst. If network analyst is not needed by the link level selector, the link level selector can choose to do nothing with this method.