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<!-- entry begin -->
< h3 > < a class = "ablack" href = "updates-improve-the-attachments-system.html" >
Updates: Improve the Attachments system
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<!-- bashblog_timestamp: #202108051337.42# -->
< div class = "subtitle" > August 05, 2021 —
GNU social development team
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<!-- text begin -->
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< p > With the milestone < a href = "https://www.gnusocial.rocks/v3/milestone-port-media-handling-from-v2.html" > Port Media system from
v2< / a > we had ported the existing
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attachment system. The fact is that this system wasn't good enough.< / p >
< p > It's always important to start with the original code as that allows us
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to review past decisions and understand all the corner cases previously
considered.< / p >
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< p > Sadly, what motivated us to re-design the attachment system were the
non-considered corner cases. In particular:< / p >
< ul >
< li > Remove < code > title< / code > from attachment, as it's part of the relation between attachment and note.< / li >
< li > Remove < code > actor< / code > from attachment, many actors may publish the same attachment.< / li >
< li > Remove < code > is_local< / code > from attachment, as it's part of the relation between attachment and note.< / li >
< li > Remove < code > remote_url< / code > from attachment, different urls can return the same attachment.< / li >
< li > Attachment now has a reference counter < / li >
< li > Add entity GSActorToAttachment< / li >
< li > Add entity GSActorToRemoteURL< / li >
< li > Add entity RemoteURL< / li >
< li > Add entity RemoteURLToNote< / li >
< li > Add entity RemoteURLToAttachment< / li >
< li > AttachmentToNote now has a title attribute< / li >
< / ul >
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< p > Key commits:< / p >
< ul >
< li > < a href = "https://code.undefinedhackers.net/GNUsocial/gnu-social/commit/32ad5dbd74ebb369c4b3ed688e1fb78464fabe49" > 32ad5dbd74 - [ENTITY] Split Attachment in various new entities< / a > < / li >
< li > < a href = "https://code.undefinedhackers.net/GNUsocial/gnu-social/commit/c381e58d3307e7dd07abeb9cf5b3998e34f5bd48" > c381e58d33 - [ENTITY] Refactor RemoteURL entities to Link< / a > < / li >
< / ul >
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< p > The structural changes and how it compares to v2 is detailed in our
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< a href = "http://agile.gnusocial.rocks/doku.php?id=attachment" > wiki< / a > .< / p >
< p > Some relevant observations:< / p >
< ul >
< li > < code > Link< / code > is now part of GNU social Data Representation terms. It represents
any remote URL being shared in a note.< / li >
< li > There's only one fixed directory for GSFiles.< / li >
< / ul >
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