blackboard.persist.course
Interface GroupDbLoader

All Superinterfaces:

Loader

public interface GroupDbLoader
extends Loader

This interface describes the set of methods that all database loaders for Group 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: #1 $ $Date: 2005/06/27 $

Nested Class Summary

static class

GroupDbLoader.Default A utility class that provides quick access to the GroupDbLoader 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	loadByCourseId(Id courseId) Load the list of Groups contained with the course (identified by Id) from the database using a connection obtained through this object's database context.
BbList	loadByCourseId(Id courseId, java.sql.Connection con) Load the list of Groups contained with the course (identified by Id) from the database using the supplied connection.
Group	loadById(Id id) Load the Group with the given Id from the database using a connection obtained through this object's database context.
Group	loadById(Id id, java.sql.Connection con) Load the Group with the given Id from the database using the supplied connection.

Methods inherited from interface blackboard.persist.Loader

getAppVersion, init

Field Detail

TYPE

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

Group loadById(Id id)
               throws KeyNotFoundException,
                      PersistenceException

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

Throws:

KeyNotFoundException - if there is no Group in the database with the given id

PersistenceException - if some other error occurs while loading the object

loadById

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

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

Throws:

KeyNotFoundException - if there is no Group in the database with the given id

PersistenceException - if some other error occurs while loading the object

loadByCourseId

BbList loadByCourseId(Id courseId)
                      throws KeyNotFoundException,
                             PersistenceException

Load the list of Groups contained with the course (identified by Id) from the database 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 User

loadByCourseId

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

Load the list of Groups contained with the course (identified by Id) from the database using the supplied connection.

Throws:

KeyNotFoundException - if the provided course id is invalid

PersistenceException - if some other error occurs while loading the User