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https://issues.apache.org/jira/browse/JAMES-3516?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17350758#comment-17350758
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Benoit Tellier commented on JAMES-3516:
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Hi Quan,
Designing the storage layer first seems like a mistake to me: we do not know
yet exactly what we want there and might end up with the wrong structure.
To be fairly honnest that would be somehow the last thing I would do.
I would suggest:
- Using the MessageResult::getThreadId property at the JMAP level - in
Email/get + Email/import
- Exposing AppendResult::getThreadId would allow also advertising the threadId
as part of Email/set results
Then, I would encourage abstracting the ThreadIdGuessingAlgorithm behind an API
that given a MailboxMessage returns its ThreadId. I would provide a naive
implementation of it (threadId = messageId) and I would plug that up within the
MessageManager (via injections).
Also, storing the threadId alongside the message would be a topic too. We would
need to add a threadId collumn to the following tables: imapUidTable &
messageIdTable (if not here we default to messageId).
Cheers,
Benoit
> [GSOC-2021] Implement Thread support for JMAP
> ---------------------------------------------
>
> Key: JAMES-3516
> URL: https://issues.apache.org/jira/browse/JAMES-3516
> Project: James Server
> Issue Type: New Feature
> Components: elasticsearch, JMAP, mailbox
> Reporter: Benoit Tellier
> Assignee: Antoine Duprat
> Priority: Major
> Labels: gsoc, gsoc2021, mentor
> Time Spent: 2h 40m
> Remaining Estimate: 0h
>
> h3. Why ?
> Mail user agents generally allow displaying emails grouped by conversations
> (replies, forward, etc...).
> As part of JMAP RFC-8621 implementation, there is a dedicated concepts:
> threads. We did implement JMAP Threads in a rather naive way: each email is a
> thread of its own.
> This naive implementation is specification compliant but defeat the overall
> purposes of threads.
> I propose myself to mentor the implementation of Threads as part of the James
> JMAP implementation.
> See: https://jmap.io/spec-mail.html#threads
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