com.graphhopper.storage

Class StorableProperties

java.lang.Object

com.graphhopper.storage.StorableProperties

All Implemented Interfaces:

Storable<StorableProperties>, Closeable, AutoCloseable

public class StorableProperties
extends Object
implements Storable<StorableProperties>

Writes an in-memory HashMap into a file on flush. Thread safe, see #743.

Author:

Peter Karich

Constructor Summary

Constructors

Constructor and Description
StorableProperties(Directory dir)

Method Summary

Modifier and Type	Method and Description
boolean	checkVersions(boolean silent)
void	close() This method makes sure that the underlying used resources are released.
StorableProperties	create(long size) Creates the underlying storage.
void	flush() This method makes sure that the underlying data is written to the storage.
String	get(String key)
long	getCapacity()
boolean	isClosed()
boolean	loadExisting()
StorableProperties	put(String key, Object val) Before it saves this value it creates a string out of it.
StorableProperties	put(String key, String val)
StorableProperties	putAll(Map<String,String> externMap)
void	putCurrentVersions()
StorableProperties	remove(String key)
String	toString()
String	versionsToString()

Methods inherited from class java.lang.Object

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

Constructor Detail

StorableProperties

public StorableProperties(Directory dir)

Method Detail

loadExisting

public boolean loadExisting()

Specified by:

loadExisting in interface Storable<StorableProperties>

Returns:

true if successfully loaded from persistent storage.

flush

public void flush()

Description copied from interface: Storable

This method makes sure that the underlying data is written to the storage. Keep in mind that a disc normally has an IO cache so that flush() is (less) probably not save against power loses.

Specified by:

flush in interface Storable<StorableProperties>

remove

public StorableProperties remove(String key)

putAll

public StorableProperties putAll(Map<String,String> externMap)

put

public StorableProperties put(String key,
                              String val)

put

public StorableProperties put(String key,
                              Object val)

Before it saves this value it creates a string out of it.

get

public String get(String key)

close

public void close()

Description copied from interface: Storable

This method makes sure that the underlying used resources are released. WARNING: it does NOT flush on close!

Specified by:

close in interface Storable<StorableProperties>

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

isClosed

public boolean isClosed()

Specified by:

isClosed in interface Storable<StorableProperties>

create

public StorableProperties create(long size)

Description copied from interface: Storable

Creates the underlying storage. First operation if it cannot be loaded.

Specified by:

create in interface Storable<StorableProperties>

getCapacity

public long getCapacity()

Specified by:

getCapacity in interface Storable<StorableProperties>

Returns:

the allocated storage size in bytes

putCurrentVersions

public void putCurrentVersions()

versionsToString

public String versionsToString()

checkVersions

public boolean checkVersions(boolean silent)

toString

public String toString()

Overrides:

toString in class Object