rsb

Class EventId

java.lang.Object

rsb.EventId

public class EventId
extends java.lang.Object

This class serves as a Uniform Resource Name to identify events in an RSB system. This URN is based on the participant's ID and a sequence number generated at the sender side unique for this participant. Both can be combined and returned as a UUID. Please note, that the sequence number is a 32bit unsigned integer and thus can overrun in a long-running system. In such cases, the timestamp has to be additionally considered to further distinguish between events.

Author:

swrede, jwienke

Constructor Summary

Constructors

Constructor and Description
EventId(ParticipantId participantId, long sequenceNumber) Creates a unique Id based on participant and sequence number.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(java.lang.Object obj)
static java.lang.String	formatSequenceNumber(long value)
java.util.UUID	getAsUUID()
ParticipantId	getParticipantId() Returns the id of the participant that sent the event.
long	getSequenceNumber() Returns the sequence number which makes this id unique combined with the sending participants id.
int	hashCode()
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

EventId

public EventId(ParticipantId participantId,
       long sequenceNumber)

Creates a unique Id based on participant and sequence number.

Method Detail

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

getAsUUID

public java.util.UUID getAsUUID()

getParticipantId

public ParticipantId getParticipantId()

Returns the id of the participant that sent the event.

Returns:

participant id

getSequenceNumber

public long getSequenceNumber()

Returns the sequence number which makes this id unique combined with the sending participants id.

Returns:

sequence number for sending participant

See Also:

getParticipantId()

formatSequenceNumber

public static java.lang.String formatSequenceNumber(long value)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object