com.graphhopper.routing.ch

Class CHPreparationHandler

java.lang.Object

com.graphhopper.routing.ch.CHPreparationHandler

public class CHPreparationHandler
extends Object

This class handles the different CH preparations and serves the corresponding RoutingAlgorithmFactory

Author:

Peter Karich, easbar

Constructor Summary

Constructors

Constructor and Description
CHPreparationHandler()

Method Summary

Modifier and Type	Method and Description
CHPreparationHandler	addCHProfile(CHProfile chProfile) Decouple CH profiles from PrepareContractionHierarchies as we need CH profiles for the graphstorage and the graphstorage for the preparation.
CHPreparationHandler	addPreparation(PrepareContractionHierarchies pch)
void	createPreparations(GraphHopperStorage ghStorage)
RoutingAlgorithmFactory	getAlgorithmFactory(HintsMap map)
List<CHProfileConfig>	getCHProfileConfigs()
List<CHProfile>	getCHProfiles()
List<CHProfile>	getEdgeBasedCHProfiles()
List<CHProfile>	getNodeBasedCHProfiles()
PrepareContractionHierarchies	getPreparation(CHProfile chProfile)
PrepareContractionHierarchies	getPreparation(HintsMap map)
List<PrepareContractionHierarchies>	getPreparations()
int	getPreparationThreads()
boolean	hasCHProfiles()
void	init(GraphHopperConfig ghConfig)
boolean	isDisablingAllowed()
boolean	isEnabled()
void	prepare(StorableProperties properties, boolean closeEarly)
CHPreparationHandler	setCHProfileConfigs(CHProfileConfig... chProfileConfigs)
CHPreparationHandler	setCHProfileConfigs(Collection<CHProfileConfig> chProfileConfigs) Enables the use of contraction hierarchies to reduce query times.
CHPreparationHandler	setDisablingAllowed(boolean disablingAllowed) This method specifies if it is allowed to disable CH routing at runtime via routing hints.
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

CHPreparationHandler

public CHPreparationHandler()

Method Detail

init

public void init(GraphHopperConfig ghConfig)

isEnabled

public final boolean isEnabled()

isDisablingAllowed

public final boolean isDisablingAllowed()

setDisablingAllowed

public final CHPreparationHandler setDisablingAllowed(boolean disablingAllowed)

This method specifies if it is allowed to disable CH routing at runtime via routing hints.

addCHProfile

public CHPreparationHandler addCHProfile(CHProfile chProfile)

Decouple CH profiles from PrepareContractionHierarchies as we need CH profiles for the graphstorage and the graphstorage for the preparation.

addPreparation

public CHPreparationHandler addPreparation(PrepareContractionHierarchies pch)

hasCHProfiles

public final boolean hasCHProfiles()

getCHProfiles

public List<CHProfile> getCHProfiles()

getNodeBasedCHProfiles

public List<CHProfile> getNodeBasedCHProfiles()

getEdgeBasedCHProfiles

public List<CHProfile> getEdgeBasedCHProfiles()

setCHProfileConfigs

public CHPreparationHandler setCHProfileConfigs(CHProfileConfig... chProfileConfigs)

setCHProfileConfigs

public CHPreparationHandler setCHProfileConfigs(Collection<CHProfileConfig> chProfileConfigs)

Enables the use of contraction hierarchies to reduce query times. "fastest|u_turn_costs=30 or your own weight-calculation type.

getCHProfileConfigs

public List<CHProfileConfig> getCHProfileConfigs()

getPreparations

public List<PrepareContractionHierarchies> getPreparations()

getAlgorithmFactory

public RoutingAlgorithmFactory getAlgorithmFactory(HintsMap map)

Returns:

a RoutingAlgorithmFactory for CH or throw an error if no preparation is available for the given hints

getPreparation

public PrepareContractionHierarchies getPreparation(HintsMap map)

getPreparation

public PrepareContractionHierarchies getPreparation(CHProfile chProfile)

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!

prepare

public void prepare(StorableProperties properties,
                    boolean closeEarly)

createPreparations

public void createPreparations(GraphHopperStorage ghStorage)