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From "Tellier Benoit (JIRA)" <server-...@james.apache.org>
Subject [jira] [Commented] (JAMES-2371) Store attachments out of the database
Date Mon, 16 Apr 2018 03:19:00 GMT

    [ https://issues.apache.org/jira/browse/JAMES-2371?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16438948#comment-16438948

Tellier Benoit commented on JAMES-2371:

Hi mostafa,

Regarding project relations

**/mailbox/api** defines the APIs to interact with mail storage. There is a couple of implementations,
for instance,**mailbox/memory** for testing purposes, **mailbox/jpa** for storing emails in
a database over JPA, **mailbox/cassandra** for doing so over Cassandra.

Here are the main interfaces:
 - *MailboxManager* for handling "non selected IMAP operations", mailbox level operations.
 - *MessageManager* is for handling messages level operations.

The **mailbox/store** project proposes an implementation for these managers and delegates
to the implementations only specific storage concerns through mappers. Here are the main mappers:
 - MailboxMapper for simple mailbox storage directives
 - MessageMapper for simple message storage directives

Note that there is a full test suite for each of these mappers, to ensure compliance (at least
for supported, non experimental back-ends mentioned above).

Maybe this page could be enhanced with what I just had been presenting to you. I will create
a ticket for that.

This page gives you a more global overview of the James architecture (not just limited to
the **mailbox**) http://james.apache.org/server/dev.html

If you have some more precise questions, I would be glad to answer it.



> Store attachments out of the database
> -------------------------------------
>                 Key: JAMES-2371
>                 URL: https://issues.apache.org/jira/browse/JAMES-2371
>             Project: James Server
>          Issue Type: New Feature
>          Components: MailStore &amp; MailRepository
>            Reporter: mostafa vtp
>            Priority: Major
>              Labels: storage
> I want to store email attachments on file system(directly or by calling a service to
do it) and save only text part of the message body in database.
> I know that in general, saving whole message body (including attachments) in database
is better But due to certain circumstances, I have to do it. And it may be useful for others
with limited storage space on database.
> We can implement it as a configurable feature.
> And if it is not accepted as a new feature, can anyone help me out how to do it?
> Thank you

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