edu.uci.isr.yancees.server.service.persistency
Class PersistencyService

java.lang.Object
  edu.uci.isr.yancees.server.service.AbstractService
      edu.uci.isr.yancees.server.service.persistency.PersistencyService

All Implemented Interfaces:

ServiceInterface

public class PersistencyService

extends AbstractService

This persistency service stores the events in main memory. Future extensions will store them in a secondary memory device.

Constructor Summary

PersistencyService()
constructor

Method Summary

void	clearAllEvents() Removes all the events from all the accounts of the database
EventInterface[]	getAndRemoveEvents(SubscriberInterface si) Gets all the events from a subscriber
EventInterface[]	getAndRemoveEventsAfter(java.util.Date date, SubscriberInterface si) Get the events after a given date and remove them from the database
EventInterface[]	getAndRemoveEventsBefore(java.util.Date date, SubscriberInterface si) Gets all the events before a given date for the especified account
EventInterface[]	getEvents(SubscriberInterface si) Gets all the events stored for a subscriber
EventInterface[]	getEventsAfter(java.util.Date date, SubscriberInterface si) Gets all the events after a given date, for a given subscriber
EventInterface[]	getEventsBefore(java.util.Date date, SubscriberInterface si) Gets all the events before a given date
void	removeEvents(SubscriberInterface si) Removes all the events, stored in the database, that are associated to the provided subscriber
void	removeEvents(SubscriberInterface si, EventInterface[] eventList) Removes specific events form a subscriber account
void	storeEvent(SubscriberInterface si, EventInterface event) Stores the event in the database in the si account.

Methods inherited from class edu.uci.isr.yancees.server.service.AbstractService

getName, isActive, setName

Methods inherited from class java.lang.Object

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

Constructor Detail

PersistencyService

public PersistencyService()

constructor

Method Detail

storeEvent

public void storeEvent(SubscriberInterface si,
                       EventInterface event)

Stores the event in the database in the si account.

Parameters:

si - is the account to store the event

event - is the event to be stored

getEvents

public EventInterface[] getEvents(SubscriberInterface si)

Gets all the events stored for a subscriber

Parameters:

si - is the subscriber account identifier

Returns:

a list of events or an empty list if no events found

getAndRemoveEvents

public EventInterface[] getAndRemoveEvents(SubscriberInterface si)

Gets all the events from a subscriber

Parameters:

si - is the accoutn where the events are stored

Returns:

a list of events or an empty list if no event is found

getEventsAfter

public EventInterface[] getEventsAfter(java.util.Date date,
                                       SubscriberInterface si)

Gets all the events after a given date, for a given subscriber

Parameters:

date - is the date to be used as reference

si - is the subscriber account identifier

Returns:

a list of events stored in the database or an empty list if no event matched the query.

getEventsBefore

public EventInterface[] getEventsBefore(java.util.Date date,
                                        SubscriberInterface si)

Gets all the events before a given date

Parameters:

date - is the reference date to be considered

si - is the subscriber interface (account) to query

Returns:

a list of events before a referecne date or an empty list if no events matching the query are found

getAndRemoveEventsAfter

public EventInterface[] getAndRemoveEventsAfter(java.util.Date date,
                                                SubscriberInterface si)

Get the events after a given date and remove them from the database

Parameters:

date - is the reference date

si - is the account to be considered

Returns:

the list of events removed from the database or an empty list if no event was found

getAndRemoveEventsBefore

public EventInterface[] getAndRemoveEventsBefore(java.util.Date date,
                                                 SubscriberInterface si)

Gets all the events before a given date for the especified account

Parameters:

date - is the reference date considered

si - is the subscriber account to be queried

Returns:

the list of the events removed or an empty list if no event is found

removeEvents

public void removeEvents(SubscriberInterface si)

Removes all the events, stored in the database, that are associated to the provided subscriber

Parameters:

si - is the subscriber account to be removed

removeEvents

public void removeEvents(SubscriberInterface si,
                         EventInterface[] eventList)

Removes specific events form a subscriber account

Parameters:

si - is the subscriber interface (account) to be considered

eventList - is the list of events to be removed

clearAllEvents

public void clearAllEvents()

Removes all the events from all the accounts of the database