cgl.narada.service.reliable.events
Class RdCompanionEntityEvent

java.lang.Object
  cgl.narada.service.reliable.events.RdCompanionEntityEvent

All Implemented Interfaces:

Comparator

public class RdCompanionEntityEvent
extends Object
implements Comparator

This is the event issued by the publishing entity, which allows the reliable delivery service to detect if events were lost in transit.

Constructor Summary

RdCompanionEntityEvent(byte[] marshalledBytes)

RdCompanionEntityEvent(int entityId, int templateId, int catenationNumber, int previousCatenationNumber, EventID eventId)

Method Summary

int	compare(Object one, Object two) For this implementation it is assumed that the entity id and template id of the compared objects are the same.
boolean	equals(Object obj) For this implementation it is assumed that the entity id and template id of the compared object is the same
byte[]	getBytes()
int	getCatenationNumber()
int	getEntityId()
EventID	getEventId() Returns the id of the event for which this serves as a companion event
int	getPreviousCatenationNumber() Returns the previous catenation number for a given template id.
int	getTemplateId()
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

RdCompanionEntityEvent

public RdCompanionEntityEvent(int entityId,
                              int templateId,
                              int catenationNumber,
                              int previousCatenationNumber,
                              EventID eventId)

RdCompanionEntityEvent

public RdCompanionEntityEvent(byte[] marshalledBytes)

Method Detail

getEntityId

public int getEntityId()

getTemplateId

public int getTemplateId()

getCatenationNumber

public int getCatenationNumber()

getPreviousCatenationNumber

public int getPreviousCatenationNumber()

Returns the previous catenation number for a given template id. Since a publisher may publish events conforming to multiple event templates, it is possible that successive events published by this publisher will not be related

getEventId

public EventID getEventId()

Returns the id of the event for which this serves as a companion event

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object obj)

For this implementation it is assumed that the entity id and template id of the compared object is the same

Specified by:

equals in interface Comparator

Overrides:

equals in class Object

compare

public int compare(Object one,
                   Object two)

For this implementation it is assumed that the entity id and template id of the compared objects are the same. We only deal with the catenation numbers here. This plays a role in the SortedSet being maintain in the RdsEventPercolator

Specified by:

compare in interface Comparator

getBytes

public byte[] getBytes()