org.hypergraphdb.handle

Class SequentialUUIDHandleFactory

java.lang.Object

org.hypergraphdb.handle.UUIDHandleFactory

org.hypergraphdb.handle.SequentialUUIDHandleFactory

All Implemented Interfaces:

HGHandleFactory

public class SequentialUUIDHandleFactory
extends UUIDHandleFactory

A handle factory that generates UUID persistent handles out of a base long and an increment counter long value. The base and the seed of the counter can be set at construction time or at any later time. The base value goes into the higher 8 bytes of the UUID and the counter value goes into the lower 8 bytes.

Author:

Borislav Iordanov

Field Summary

Fields inherited from class org.hypergraphdb.handle.UUIDHandleFactory

I

Constructor Summary

Constructors

Constructor and Description
SequentialUUIDHandleFactory()
SequentialUUIDHandleFactory(long base, long seed)

Method Summary

Methods

Modifier and Type	Method and Description
long	getBase()
long	getSeed()
HGPersistentHandle	makeHandle() Construct and return a new, unique persistent handle.
void	setBase(long base)
void	setSeed(long newSeed)

Methods inherited from class org.hypergraphdb.handle.UUIDHandleFactory

anyHandle, linkTypeHandle, makeHandle, makeHandle, makeHandle, nullHandle, nullTypeHandle, subsumesTypeHandle, topTypeHandle

Methods inherited from class java.lang.Object

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

Constructor Detail

SequentialUUIDHandleFactory

public SequentialUUIDHandleFactory()

SequentialUUIDHandleFactory

public SequentialUUIDHandleFactory(long base,
                           long seed)

Method Detail

getBase

public long getBase()

setBase

public void setBase(long base)

getSeed

public long getSeed()

setSeed

public void setSeed(long newSeed)

makeHandle

public HGPersistentHandle makeHandle()

Description copied from interface: HGHandleFactory

Construct and return a new, unique persistent handle. The handle is permanently unique. It can be persistent (serialized) and restored without ever conflicting with another handle.

Specified by:

makeHandle in interface HGHandleFactory

Overrides:

makeHandle in class UUIDHandleFactory