Package me.ahoo.cosid.segment

Class IdSegmentChain

java.lang.Object

me.ahoo.cosid.segment.IdSegmentChain

All Implemented Interfaces:

Comparable<IdSegment>, Grouped, IdSegment

public class IdSegmentChain
extends Object
implements IdSegment

Chained ID segment.

Field Summary

Fields

Modifier and Type	Field	Description
static final IdSegmentChain	NOT_SET
static final int	ROOT_VERSION

Fields inherited from interface me.ahoo.cosid.segment.IdSegment

SEQUENCE_OVERFLOW, TIME_TO_LIVE_FOREVER

Constructor Summary

Constructors

Constructor	Description
IdSegmentChain(long version, IdSegment idSegment, boolean allowReset)
IdSegmentChain(IdSegmentChain previousChain, IdSegment idSegment, boolean allowReset)

Method Summary

Modifier and Type	Method	Description
IdSegmentChain	ensureSetNext(Function<IdSegmentChain,IdSegmentChain> idSegmentChainSupplier)
int	gap(IdSegmentChain end, long step)
long	getFetchTime()	ID segment fetch time.
IdSegment	getIdSegment()
long	getMaxId()
IdSegmentChain	getNext()
long	getOffset()
long	getSequence()
long	getStep()
long	getTtl()	the id segment time to live.
long	getVersion()
GroupedKey	group()
long	incrementAndGet()
static IdSegmentChain	newRoot(boolean allowReset)
void	setNext(IdSegmentChain nextIdSegmentChain)
String	toString()
boolean	trySetNext(Function<IdSegmentChain,IdSegmentChain> idSegmentChainSupplier)	try set next Chained ID segment.

Methods inherited from class java.lang.Object

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

Methods inherited from interface me.ahoo.cosid.segment.IdSegment

compareTo, ensureNextIdSegment, isAvailable, isExpired, isOverflow, isOverflow

Field Details

ROOT_VERSION

public static final int ROOT_VERSION

See Also:

• Constant Field Values

NOT_SET

public static final IdSegmentChain NOT_SET

Constructor Details

IdSegmentChain

public IdSegmentChain(IdSegmentChain previousChain,
 IdSegment idSegment,
 boolean allowReset)

IdSegmentChain

public IdSegmentChain(long version,
 IdSegment idSegment,
 boolean allowReset)

Method Details

trySetNext

public boolean trySetNext(Function<IdSegmentChain,IdSegmentChain> idSegmentChainSupplier)
                   throws NextIdSegmentExpiredException

try set next Chained ID segment.

Parameters:

idSegmentChainSupplier - IdSegmentChain supplier

Returns:

true if set successfully

Throws:

NextIdSegmentExpiredException - This exception is thrown if the provided IdSegmentChain has expired.

setNext

public void setNext(IdSegmentChain nextIdSegmentChain)

ensureSetNext

public IdSegmentChain ensureSetNext(Function<IdSegmentChain,IdSegmentChain> idSegmentChainSupplier)
                             throws NextIdSegmentExpiredException

Throws:

NextIdSegmentExpiredException

getNext

public IdSegmentChain getNext()

getIdSegment

public IdSegment getIdSegment()

group

public GroupedKey group()

Specified by:

group in interface Grouped

getVersion

public long getVersion()

gap

public int gap(IdSegmentChain end,
 long step)

newRoot

public static IdSegmentChain newRoot(boolean allowReset)

getFetchTime

public long getFetchTime()

Description copied from interface: IdSegment

ID segment fetch time. unit TimeUnit.SECONDS

Specified by:

getFetchTime in interface IdSegment

Returns:

fetch time

getTtl

public long getTtl()

Description copied from interface: IdSegment

the id segment time to live. unit TimeUnit.SECONDS

Specified by:

getTtl in interface IdSegment

Returns:

time to live

getMaxId

public long getMaxId()

Specified by:

getMaxId in interface IdSegment

getOffset

public long getOffset()

Specified by:

getOffset in interface IdSegment

getSequence

public long getSequence()

Specified by:

getSequence in interface IdSegment

getStep

public long getStep()

Specified by:

getStep in interface IdSegment

incrementAndGet

public long incrementAndGet()

Specified by:

incrementAndGet in interface IdSegment

toString

public String toString()

Overrides:

toString in class Object