com.graphhopper.storage

Class GHDirectory

java.lang.Object

com.graphhopper.storage.GHDirectory

All Implemented Interfaces:

Directory

Direct Known Subclasses:

MMapDirectory, RAMDirectory

public class GHDirectory
extends Object
implements Directory

Implements some common methods for the subclasses.

Author:

Peter Karich

Field Summary

Fields

Modifier and Type	Field and Description
protected String	location

Constructor Summary

Constructors

Constructor and Description
GHDirectory(String _location, DAType defaultType)

Method Summary

Modifier and Type	Method and Description
void	clear() Removes all contained objects from the directory and releases its resources.
void	close() Releases all allocated resources from the directory without removing backing files.
void	configure(LinkedHashMap<String,String> config) Configure the DAType (specified by the value) of a single DataAccess object (specified by the key).
Directory	create()
DataAccess	create(String name) Creates a new DataAccess object with the given name in the location of this Directory.
DataAccess	create(String name, DAType type)
DataAccess	create(String name, DAType type, int segmentSize)
DataAccess	create(String name, int segmentSize)
DAType	getDefaultType()
DAType	getDefaultType(String dataAccess, boolean preferInts) This method returns the default DAType of the specified DataAccess (as string).
String	getLocation()
boolean	isStoring()
void	loadMMap()
void	remove(String name) Removes the specified object from the directory.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

location

protected final String location

Constructor Detail

GHDirectory

public GHDirectory(String _location,
                   DAType defaultType)

Method Detail

configure

public void configure(LinkedHashMap<String,String> config)

Configure the DAType (specified by the value) of a single DataAccess object (specified by the key). For "MMAP" you can prepend "preload." to the name and specify a percentage which preloads the DataAccess into physical memory of the specified percentage (only applied for load, not for import). As keys can be patterns the order is important and the LinkedHashMap is forced as type.

loadMMap

public void loadMMap()

create

public DataAccess create(String name)

Description copied from interface: Directory

Creates a new DataAccess object with the given name in the location of this Directory. Each name can only be used once.

Specified by:

create in interface Directory

create

public DataAccess create(String name,
                         int segmentSize)

Specified by:

create in interface Directory

segmentSize - segment size in bytes or -1 to use the default of the corresponding DataAccess implementation

create

public DataAccess create(String name,
                         DAType type)

Specified by:

create in interface Directory

create

public DataAccess create(String name,
                         DAType type,
                         int segmentSize)

Specified by:

create in interface Directory

close

public void close()

Description copied from interface: Directory

Releases all allocated resources from the directory without removing backing files.

Specified by:

close in interface Directory

clear

public void clear()

Description copied from interface: Directory

Removes all contained objects from the directory and releases its resources.

Specified by:

clear in interface Directory

remove

public void remove(String name)

Description copied from interface: Directory

Removes the specified object from the directory.

Specified by:

remove in interface Directory

getDefaultType

public DAType getDefaultType()

Specified by:

getDefaultType in interface Directory

Returns:

the default type of a newly created DataAccess object

getDefaultType

public DAType getDefaultType(String dataAccess,
                             boolean preferInts)

This method returns the default DAType of the specified DataAccess (as string). If preferInts is true then this method returns e.g. RAM_INT if the type of the specified DataAccess is RAM.

Specified by:

getDefaultType in interface Directory

isStoring

public boolean isStoring()

create

public Directory create()

Specified by:

create in interface Directory

toString

public String toString()

Overrides:

toString in class Object

getLocation

public String getLocation()

Specified by:

getLocation in interface Directory

Returns:

an id or location in the local filesystem.