blackboard.persist.announcement
Interface AnnouncementDbLoader

All Superinterfaces:

Loader

public interface AnnouncementDbLoader

extends Loader

This interface describes the set of methods that all database loaders for Announcement objects must implement.

Loading methods are named according to the criteria used for loading and the type of load that is performed.

Since:

Bb 5.5

Version:

$Revision: 23 $ $Date: 10/16/02 11:36a $

Nested Class Summary

static class

AnnouncementDbLoader.Default A utility class that provides quick access to the AnnouncementDbLoader instance associated with the default instance of the database BbPersistenceManager.

Field Summary

static java.lang.String

TYPE Type used to obtain an instance of the class configured to provide the implementation for this interface.

Method Summary

BbList	loadAvailableByType(Announcement.Type type) Load the list of Announcement objects currently available to the user of the type identified by the given Announcement.Type using a connection obtained through this object's database context.
BbList	loadAvailableByType(Announcement.Type type, java.sql.Connection con) Load the list of Announcement objects currently available to the user of the type identified by the given Announcement.Type using the supplied connection.
BbList	loadAvailableByType(Announcement.Type type, int numDaysBack) Load the list of Announcement objects currently available to the user of the type identified by the given Announcement.Type created or modified within the last n days, using a connection obtained through this object's database context.
BbList	loadAvailableByType(Announcement.Type type, int numDaysBack, java.sql.Connection con) Load the list of Announcement objects currently available to the user of the type identified by the given Announcement.Type created or modified within the last n days, using the supplied connection.
BbList	loadAvailableByUserId(Id userId) Loads the list of all available announcements (system, course and organization) that pertain to the user identified by the given user Id, using a connection obtained through this object's database context.
BbList	loadAvailableByUserId(Id userId, java.sql.Connection con) Loads the list of all available announcements (system, course and organization) that pertain to the user identified by the given user Id, using the supplied connection.
BbList	loadAvailableByUserId(Id userId, int numDaysBack) Loads the list of all available announcements (system, course and organization) that pertain to the user identified by the given user Id, within a given time period, using a connection obtained through this object's database context.
BbList	loadAvailableByUserId(Id userId, int numDaysBack, java.sql.Connection con) Loads the list of all available announcements (system, course and organization) that pertain to the user identified by the given user Id, within a given time period, using the supplied connection.
BbList	loadByCourseId(Id courseId) Load the list of Announcement objects that currently exist for the course identified by the given course Id using a connection obtained through this object's database context.
BbList	loadByCourseId(Id courseId, java.sql.Connection con) Load the list of Announcement objects that currently exist for the course identified by the given course Id using the supplied connection.
Announcement	loadById(Id id) Load the Announcement with the given Id from the database using a connection obtained through this object's database context.
Announcement	loadById(Id id, java.sql.Connection con) Load the Announcement with the given Id from the database using the supplied connection.
BbList	loadByType(Announcement.Type type) Load the list of Announcement objects that currently exist of the type identified by the given Announcement.Type using a connection obtained through this object's database context.
BbList	loadByType(Announcement.Type type, java.sql.Connection con) Load the list of Announcement objects that currently exist of the type identified by the given Announcement.Type using the supplied connection.

Methods inherited from interface blackboard.persist.Loader

getAppVersion, init

Field Detail

TYPE

public static final java.lang.String TYPE

Type used to obtain an instance of the class configured to provide the implementation for this interface. Used when making a call to BbPersistenceManager.getLoader(String).

See Also:

Constant Field Values

Method Detail

loadById

public Announcement loadById(Id id)
                      throws KeyNotFoundException,
                             PersistenceException

Load the Announcement with the given Id from the database using a connection obtained through this object's database context.

Parameters:

id - the Id of the Announcement to be loaded

Throws:

KeyNotFoundException - if there is no Announcement in the database with the given Id

PersistenceException - if some other error occurs while loading the object

loadById

public Announcement loadById(Id id,
                             java.sql.Connection con)
                      throws KeyNotFoundException,
                             PersistenceException

Load the Announcement with the given Id from the database using the supplied connection.

Parameters:

id - the Id of the Announcement to be loaded

con - the Connection to use to perform the persistence. If left null, method will use default connection.

Throws:

KeyNotFoundException - if there is no Announcement in the database with the given Id

PersistenceException - if some other error occurs while loading the object

loadByType

public BbList loadByType(Announcement.Type type)
                  throws KeyNotFoundException,
                         PersistenceException

Load the list of Announcement objects that currently exist of the type identified by the given Announcement.Type using a connection obtained through this object's database context.

Parameters:

type - the Announcement.Type of Announcement to be loaded

Throws:

KeyNotFoundException - if the provided course id is invalid

PersistenceException - if some other error occurs while loading the object

loadByType

public BbList loadByType(Announcement.Type type,
                         java.sql.Connection con)
                  throws KeyNotFoundException,
                         PersistenceException

Load the list of Announcement objects that currently exist of the type identified by the given Announcement.Type using the supplied connection.

Parameters:

type - the Announcement.Type of Announcement to be loaded

con - the Connection to use to perform the persistence. If left null, method will use default connection.

Throws:

KeyNotFoundException - if the provided course id is invalid

PersistenceException - if some other error occurs while loading the object

loadAvailableByType

public BbList loadAvailableByType(Announcement.Type type)
                           throws KeyNotFoundException,
                                  PersistenceException

Load the list of Announcement objects currently available to the user of the type identified by the given Announcement.Type using a connection obtained through this object's database context.

Parameters:

type - the Announcement.Type of Announcement to be loaded

Throws:

KeyNotFoundException - if the provided course id is invalid

PersistenceException - if some other error occurs while loading the object

loadAvailableByType

public BbList loadAvailableByType(Announcement.Type type,
                                  java.sql.Connection con)
                           throws KeyNotFoundException,
                                  PersistenceException

Load the list of Announcement objects currently available to the user of the type identified by the given Announcement.Type using the supplied connection.

Parameters:

type - the Announcement.Type of Announcement to be loaded

con - the Connection to use to perform the persistence. If left null, method will use default connection.

Throws:

KeyNotFoundException - if the provided course id is invalid

PersistenceException - if some other error occurs while loading the object

loadAvailableByType

public BbList loadAvailableByType(Announcement.Type type,
                                  int numDaysBack)
                           throws KeyNotFoundException,
                                  PersistenceException

Load the list of Announcement objects currently available to the user of the type identified by the given Announcement.Type created or modified within the last n days, using a connection obtained through this object's database context.

Parameters:

type - the Announcement.Type of Announcement to be loaded

numDaysBack - the number of past days to search (from current date)

Throws:

KeyNotFoundException - if the provided course id is invalid

PersistenceException - if some other error occurs while loading the object

loadAvailableByType

public BbList loadAvailableByType(Announcement.Type type,
                                  int numDaysBack,
                                  java.sql.Connection con)
                           throws KeyNotFoundException,
                                  PersistenceException

Load the list of Announcement objects currently available to the user of the type identified by the given Announcement.Type created or modified within the last n days, using the supplied connection.

Parameters:

type - the Announcement.Type of Announcement to be loaded

numDaysBack - the number of days worth of announcements to load (-1 = all, 0 = today, 1 = today and yesterday, etc.)

con - the Connection to use to perform the persistence. If left null, method will use default connection.

Throws:

KeyNotFoundException - if the provided course id is invalid

PersistenceException - if some other error occurs while loading the object

loadByCourseId

public BbList loadByCourseId(Id courseId)
                      throws KeyNotFoundException,
                             PersistenceException

Load the list of Announcement objects that currently exist for the course identified by the given course Id using a connection obtained through this object's database context.

Throws:

KeyNotFoundException - if the provided course id is invalid

PersistenceException - if some other error occurs while loading the object

loadByCourseId

public BbList loadByCourseId(Id courseId,
                             java.sql.Connection con)
                      throws KeyNotFoundException,
                             PersistenceException

Load the list of Announcement objects that currently exist for the course identified by the given course Id using the supplied connection.

Parameters:

con - the Connection to use to perform the persistence. If left null, method will use default connection.

Throws:

KeyNotFoundException - if the provided course id is invalid

PersistenceException - if some other error occurs while loading the object

loadAvailableByUserId

public BbList loadAvailableByUserId(Id userId)
                             throws KeyNotFoundException,
                                    PersistenceException

Loads the list of all available announcements (system, course and organization) that pertain to the user identified by the given user Id, using a connection obtained through this object's database context.

Parameters:

userId - the Id of the target user

Throws:

KeyNotFoundException - if the provided course id is invalid

PersistenceException - if some other error occurs while loading the object

loadAvailableByUserId

public BbList loadAvailableByUserId(Id userId,
                                    java.sql.Connection con)
                             throws KeyNotFoundException,
                                    PersistenceException

Loads the list of all available announcements (system, course and organization) that pertain to the user identified by the given user Id, using the supplied connection.

Parameters:

userId - the Id of the target user

con - the Connection to use to perform the persistence. If left null, method will use default connection.

Throws:

KeyNotFoundException - if the provided course id is invalid

PersistenceException - if some other error occurs while loading the object

loadAvailableByUserId

public BbList loadAvailableByUserId(Id userId,
                                    int numDaysBack)
                             throws KeyNotFoundException,
                                    PersistenceException

Loads the list of all available announcements (system, course and organization) that pertain to the user identified by the given user Id, within a given time period, using a connection obtained through this object's database context.

Parameters:

userId - the Id of the target user

numDaysBack - the number of days worth of announcements to load (-1 = all, 0 = today, 1 = today and yesterday, etc.)

Throws:

KeyNotFoundException - if the provided course id is invalid

PersistenceException - if some other error occurs while loading the object

loadAvailableByUserId

public BbList loadAvailableByUserId(Id userId,
                                    int numDaysBack,
                                    java.sql.Connection con)
                             throws KeyNotFoundException,
                                    PersistenceException

Loads the list of all available announcements (system, course and organization) that pertain to the user identified by the given user Id, within a given time period, using the supplied connection.

Parameters:

userId - the Id of the target user

numDaysBack - the number of days worth of announcements to load (-1 = all, 0 = today, 1 = today and yesterday, etc.)

con - the Connection to use to perform the persistence. If left null, method will use default connection.

Throws:

KeyNotFoundException - if the provided course id is invalid

PersistenceException - if some other error occurs while loading the object