es.uvigo.esei.dgss.lettab.service

Class EventEJB

java.lang.Object

es.uvigo.esei.dgss.lettab.service.EventEJB

@DeclareRoles(value={"admin","user"})
 @RolesAllowed(value="admin")
public class EventEJB
extends Object

Constructor Summary

Constructors

Constructor and Description
EventEJB()

Method Summary

Modifier and Type	Method and Description
void	createEvent(es.uvigo.esei.dgss.lettab.domain.Event event) Create an event and stores it in the database
List<es.uvigo.esei.dgss.lettab.domain.Event>	findEvent(String text) This method search events by title and description, and order them by ascendant date and descendant participants
String	getCurrentUserLogin()
List<es.uvigo.esei.dgss.lettab.domain.Event>	getFiveRandomEvents() Get five random events using JPQL
List<es.uvigo.esei.dgss.lettab.domain.Event>	getMyEvents(String login)
List<es.uvigo.esei.dgss.lettab.domain.Event>	getPopularEvents(int numEvents) Get popular events and order them date asc and participants desc.
void	linkEventToUser(es.uvigo.esei.dgss.lettab.domain.User participant, es.uvigo.esei.dgss.lettab.domain.Event event) Links an user to an event and increase the number of participants for that event

Methods inherited from class java.lang.Object

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

Constructor Detail

EventEJB

public EventEJB()

Method Detail

getCurrentUserLogin

public String getCurrentUserLogin()

getFiveRandomEvents

@PermitAll
public List<es.uvigo.esei.dgss.lettab.domain.Event> getFiveRandomEvents()

Get five random events using JPQL

Returns:

a list with five random events

getPopularEvents

@PermitAll
public List<es.uvigo.esei.dgss.lettab.domain.Event> getPopularEvents(int numEvents)

Get popular events and order them date asc and participants desc.

Parameters:

numEvents - The number of events to look for

Returns:

a list with the popular events

linkEventToUser

@RolesAllowed(value="user")
public void linkEventToUser(es.uvigo.esei.dgss.lettab.domain.User participant,
                                                        es.uvigo.esei.dgss.lettab.domain.Event event)

Links an user to an event and increase the number of participants for that event

Parameters:

participant - The user that is linked to an event

event - Event assigned to a user

createEvent

@RolesAllowed(value="user")
public void createEvent(es.uvigo.esei.dgss.lettab.domain.Event event)
                                             throws IllegalArgumentException,
                                                    javax.persistence.EntityExistsException,
                                                    javax.persistence.PersistenceException

Create an event and stores it in the database

Parameters:

event - The event that we want to persist

Throws:

IllegalArgumentException - When the event we want to persist is null

javax.persistence.PersistenceException - Happens when there is any error with the persistence

javax.persistence.EntityExistsException

findEvent

@PermitAll
public List<es.uvigo.esei.dgss.lettab.domain.Event> findEvent(String text)
                                                                  throws javax.persistence.EntityNotFoundException

This method search events by title and description, and order them by ascendant date and descendant participants

Parameters:

text - The String that should match with the title or description of the events

Returns:

the result list of events

Throws:

javax.persistence.EntityNotFoundException - if there aren't any event that matches with the text

getMyEvents

@RolesAllowed(value="user")
public List<es.uvigo.esei.dgss.lettab.domain.Event> getMyEvents(String login)

Parameters:

login - The String passed to retrieve the user

Returns:

the result list of events of user