> -----Original Message-----
> From: Stefano Bagnara [mailto:[EMAIL PROTECTED]
> Sent: 26 October 2005 17:26
> To: 'James Developers List'
> Subject: Re: Re: IMAP status
>
> > Users are going to want to extend James' Message Store Model.
> > A single interface that acts like a "Virtual File System" of
> > soughts will make it easier for them.
> > This interface would deal with only the serialization and
> > retrival of data.
>
> We already have this interface: MailRepository.
> We simply should deprecate the MailRepository (we can always use the
> SpoolRepository instead) and create a new MessageRepository interface.
>
> > Maybe we can get it to the point that a user writing a single
> > class implementing the MailStore interface is all that is
> > needed to port James to a new database system or file format?
> > As with some other message APIs?
>
> MailStore has been removed in the current trunk because it was not
> necessary.
> We already have "Store" as the main object (let's say "repositories")
> factory interface.
>
>
> In my current james (patched trunk) I have this interface for
> MessageRepository:
>
> /**
> * Interface for a Repository to store MimeMessage.
> *
> *
> */
> public interface MessageRepository {
>
> /**
> * Stores a message in this repository.
> *
> * @param mc the message to store
> * @return the key to later retrieve this message
> */
> String store(MimeMessage mc) throws MessagingException;
>
> /**
> * List string keys of messages in repository.
> *
> * @return an <code>Iterator</code> over the list of keys in the
> repository
> *
> */
> Set keySet() throws MessagingException;
>
> /**
> * List key,message touples in repository.
> *
> * @return a <code>Set</code> of Map.Entry representing
> * messagekey => MimeMessage
> */
> Set entrySet() throws MessagingException;
>
> /**
> * Retrieves a message given a key. At the moment, keys can be
> obtained
> * from list()
> *
> * @param key the key of the message to retrieve
> * @return the mail corresponding to this key, null if none exists
> */
> MimeMessage retrieve(String key) throws MessagingException;
>
> /**
> * Removes a message identified by key.
> *
> * @param key the key of the message to be removed from the repository
> */
> void remove(String key) throws MessagingException;
>
// I'd also add
void delete(); // Remove the repository completely
void rename(String newName); //move or rename the repository
// Copy is not required for IMAP as it can be implemented in other
ways
// I'm fairly indifferent to how we get the child reps
// we just need some way to get hold of them
MessageRepository[] getChildren();
void addChild(MessageRepository repository);
> }
There would then be a separate interface for IMAP repositories to wrap
things like access to UIDs and MSNs.
>
> And then I create a MessageRepositoryWrapper that provide a
> MessageRepository over an "old" (currently used) MailRepository. This way
> I've been able to upgrade to my interfaces while keeping the current data
> (file/db structure/data).
>
> The interface is really slim: we just need to decide wether to keep
> "MimeMessage" or use a "Stream" instead.
> Maybe the StreamRepository from cornerstone already implements a similar
> interface. We already use it in the SMTPHandler to store the incoming
> message before sending it to the spooler.
>
> Stefano
>
>
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