blackboard.persist.course
Class GroupDbPersister.Default

java.lang.Object
  blackboard.persist.course.GroupDbPersister.Default

Enclosing interface:

GroupDbPersister

public static final class GroupDbPersister.Default
extends java.lang.Object

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

This class and its method(s) are conveniences and should be used wisely. If one is retrieving many Loader and/or Persister instances within some scope, it will likely be more efficient to retrieve the default database persistence manager directly, and then retrieve loader/persister instances from it instead of making several calls to this and/or other loader/persister utility classes.

Constructor Summary

GroupDbPersister.Default()

Method Summary

static GroupDbPersister

getInstance() Returns the GroupDbPersister instance associated with the default instance of the database BbPersistenceManager.

Methods inherited from class java.lang.Object

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

Constructor Detail

GroupDbPersister.Default

public GroupDbPersister.Default()

Method Detail

getInstance

public static GroupDbPersister getInstance()
                                    throws PersistenceException

Returns the GroupDbPersister instance associated with the default instance of the database BbPersistenceManager.

Calling this method is equivalent to executing the following code:

 BbPersistenceManager pm = BbServiceManager.getPersistenceService().getDbPersistenceManager();
 GroupDbPersister persister = (GroupDbPersister) pm.getPersister( GroupDbPersister.TYPE ) );
 

Returns:

the GroupDbPersister instance associated with the default database persistence manager

Throws:

PersistenceException - if an error occurs when trying to retrieve the GroupDbPersister instance