blackboard.persist.discussionboard
Interface MessageAttachmentDbPersister

All Superinterfaces:

Persister

public interface MessageAttachmentDbPersister
extends Persister

This interface describes the set of methods that all database persisters for MessageAttachment objects must implement.

A database persister allows an object to be stored (either inserted or updated) within the database or to be deleted from the database. Persisting methods are named according to the type of persistence that is performed.

Since:

Bb 6.0

Version:

$Revision: #1 $ $Date: 2007/06/27 $

Nested Class Summary

static class

MessageAttachmentDbPersister.Default A utility class that provides quick access to the MessageAttachmentDbPersister 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

void	deleteById(Id id) Deletes the MessageAttachment identified by the given Id value using a connection from the associated persistence manager's database container.
void	deleteById(Id id, java.sql.Connection con) Deletes the MessageAttachment identified by the given Id value using the supplied connection.
void	deleteByMessageId(Id messageId) Deletes the MessageAttachment that belongs to the Message identified by the given Id value using a connection from the associated persistence manager's database container.
void	deleteByMessageId(Id messageId, java.sql.Connection con) Deletes the MessageAttachment that belongs to the Message identified by the given Id value using the supplied connection.
void	persist(MessageAttachment MessageAttachment) Inserts or updates the supplied MessageAttachment using a connection from the associated persistence manager's database container.
void	persist(MessageAttachment MessageAttachment, java.sql.Connection con) Inserts or updates the supplied MessageAttachment using the supplied connection.

Methods inherited from interface blackboard.persist.Persister

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.getPersister(String)

See Also:

Constant Field Values

Method Detail

persist

void persist(MessageAttachment MessageAttachment)
             throws ValidationException,
                    PersistenceException

Inserts or updates the supplied MessageAttachment using a connection from the associated persistence manager's database container. If the object's id is set and is associated with the same container, then an update is done, otherwise a new object is inserted.

Throws:

ValidationException - if the object is not in a consistent state to be persisted.

PersistenceException - if some other exception happens while persisting the object.

persist

void persist(MessageAttachment MessageAttachment,
             java.sql.Connection con)
             throws ValidationException,
                    PersistenceException

Inserts or updates the supplied MessageAttachment using the supplied connection. The connection must be to the same database as is used by the associated persistence manager. If the object's id is set and is associated with this persistence manager's same container, then an update is done, otherwise a new object is inserted.

Throws:

ValidationException - if the object is not in a consistent state to be persisted.

PersistenceException - if some other exception happens while persisting the object.

deleteById

void deleteById(Id id)
                throws KeyNotFoundException,
                       PersistenceException

Deletes the MessageAttachment identified by the given Id value using a connection from the associated persistence manager's database container.

Throws:

KeyNotFoundException - if an object with the given Id value can not be found

PersistenceException - if some other exception happens during the delete operation

deleteById

void deleteById(Id id,
                java.sql.Connection con)
                throws KeyNotFoundException,
                       PersistenceException

Deletes the MessageAttachment identified by the given Id value using the supplied connection.

Throws:

KeyNotFoundException - if an object with the given Id value can not be found

PersistenceException - if some other exception happens during the delete operation

deleteByMessageId

void deleteByMessageId(Id messageId)
                       throws KeyNotFoundException,
                              PersistenceException

Deletes the MessageAttachment that belongs to the Message identified by the given Id value using a connection from the associated persistence manager's database container.

Throws:

KeyNotFoundException - if an object with the given Id value can not be found

PersistenceException - if some other exception happens during the delete operation

deleteByMessageId

void deleteByMessageId(Id messageId,
                       java.sql.Connection con)
                       throws KeyNotFoundException,
                              PersistenceException

Deletes the MessageAttachment that belongs to the Message identified by the given Id value using the supplied connection.

Throws:

KeyNotFoundException - if an object with the given Id value can not be found

PersistenceException - if some other exception happens during the delete operation