com.graphhopper.routing.lm

Class LMPreparationHandler

java.lang.Object

com.graphhopper.routing.lm.LMPreparationHandler

public class LMPreparationHandler
extends Object

This class deals with the A*, landmark and triangulation (ALT) preparations.

Author:

Peter Karich

Constructor Summary

Constructors

Constructor and Description
LMPreparationHandler()

Method Summary

Modifier and Type	Method and Description
int	getLandmarks()
List<LMProfile>	getLMProfiles()
int	getPreparationThreads()
void	init(GraphHopperConfig ghConfig)
boolean	isEnabled()
List<LandmarkStorage>	load(List<LMConfig> lmConfigs, GraphHopperStorage ghStorage) Loads the landmark data for all given configs if available.
List<PrepareLandmarks>	prepare(List<LMConfig> lmConfigs, GraphHopperStorage ghStorage, LocationIndex locationIndex, boolean closeEarly) Prepares the landmark data for all given configs
LMPreparationHandler	setLMProfiles(Collection<LMProfile> lmProfiles) Enables the use of landmarks to reduce query times.
LMPreparationHandler	setLMProfiles(LMProfile... lmProfiles)
void	setPreparationThreads(int preparationThreads) This method changes the number of threads used for preparation on import.

Methods inherited from class java.lang.Object

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

Constructor Detail

LMPreparationHandler

public LMPreparationHandler()

Method Detail

init

public void init(GraphHopperConfig ghConfig)

getLandmarks

public int getLandmarks()

isEnabled

public final boolean isEnabled()

getPreparationThreads

public int getPreparationThreads()

setPreparationThreads

public void setPreparationThreads(int preparationThreads)

This method changes the number of threads used for preparation on import. Default is 1. Make sure that you have enough memory when increasing this number!

setLMProfiles

public LMPreparationHandler setLMProfiles(LMProfile... lmProfiles)

setLMProfiles

public LMPreparationHandler setLMProfiles(Collection<LMProfile> lmProfiles)

Enables the use of landmarks to reduce query times.

getLMProfiles

public List<LMProfile> getLMProfiles()

load

public List<LandmarkStorage> load(List<LMConfig> lmConfigs,
                                  GraphHopperStorage ghStorage)

Loads the landmark data for all given configs if available.

Returns:

the loaded landmark storages

prepare

public List<PrepareLandmarks> prepare(List<LMConfig> lmConfigs,
                                      GraphHopperStorage ghStorage,
                                      LocationIndex locationIndex,
                                      boolean closeEarly)

Prepares the landmark data for all given configs