XSF Discussion - 2016-12-28

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  82. ralphm

    Tobias: only one child element is allowed.

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  100. Tobias

    Why is that?

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  106. Tobias

    ralphm, where does it say so in XEP-0060?

  107. ralphm


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  112. ralphm

    And the schema. maxOccurs defaults to 1.

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  117. Tobias

    wonder what the reason was for that restriction

  118. ralphm

    There was a lot of debate on this when we specced this, but consensus was that a single element made the most sense.

  119. ralphm

    Treating a single thing is easier than multiple things that belong together somehow. If you need additional grouping, you can use a wrapper element.

  120. Tobias

    so the recommendation is to do <item><entry><x>here the two elements</x><entry></item>

  121. ralphm

    Yeah. Do you have a concrete use case for multiple elements?

  122. ralphm

    Actually, <entry/> is your wrapper, and x might appear twice.

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  125. Tobias

    see the conversation of goffi and myself yesterday...the idea was to attach info to a pubsub atom item about the images mentioned in the item https://q.zash.se/5e4d0b8702c3.txt

  126. Tobias

    so that a receiver would get further hints where to fetch the image ni:///sha3-256;wqfDv8OGw7jCvx7Dl2ZRw4FHVsKgYcOWYsO14oKsw79Nw6Q7ScO64oCaw5gKS-KCrMO4Q0o from

  127. Tobias

    but since the new stanza isn't part of atom i'd have to create a new entry type, that allows atom and other children

  128. goffi

    ralphm: indeed the issue there is that entry is from atom namespace, while <reference> and <media-sharing> are XMPP

  129. goffi

    and XEP-0277 already use <entry> as item child

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  131. ralphm

    Why not include the meta-data inside the Atom element document?

  132. ralphm

    Atom allows for arbitrary child elements

  133. Tobias

    it does? that would work for me

  134. Tobias

    goffi, what's your opionion on that?

  135. goffi

    I didn't knew it allows arbitraty element, in this case it works for me to

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  137. Tobias

    great :)

  138. goffi


  139. goffi


  140. goffi

    thanks ralphm, didn't knew that

  141. Tobias

    ralphm, thx for the hint

  142. ralphm


  143. ralphm


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  146. Ge0rG

    I remember another usecase for multiple items was concurrent update of bookmarks

  147. ralphm

    The trouble with concurrent updates or batching is that error handling becomes more complex. This is why batch functionality has been removed in various parts of XEP-0060.

  148. ralphm

    If you still want that, you can handle it in your application-specific code.

  149. Ge0rG

    it shouldn't be too hard to edit different items from different clients. but if everything is stored in the same item, race conditions have a more severe effect.

  150. ralphm

    That's more a problem with how bookmarks work, rather that PubSub itself

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  154. goffi

    Ge0rG, ralphm: we (with edehlas and chris deering) have started to work on a new protoXEP for bookmarks, which would actually be a general list of uri, you can check https://lite5.framapad.org/p/OlHwr5GBlY

  155. goffi

    one of the goal is to fix the one item for all issue

  156. goffi

    the other is to have correct handling of non MUC uri

  157. goffi

    and also nice things like tags

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  159. goffi

    it cool be use not only for bookmark, but anywhere where a list or uris if useful

  160. goffi


  161. goffi

    is a bit stalled at the moment because we are all busy, be we could defenitely propose a first protoXEP quickly

  162. ralphm

    goffi: right. Cool

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  187. edhelas

    hey, I'm at the 33c3, if someone else is here, ping me, would be nice to meet :)

  188. Ge0rG

    edhelas: Link Mauve and daniel should be there, somewhere

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  195. Link Mauve

    mathieui, edhelas, daniel, Tobias, kalkin, I’m around Saal G, just finished eating.

  196. Link Mauve

    And you?

  197. Tobias

    just on my way to the CCH

  198. kalkin and Daniel are going too hall 2

  199. kalkin

    We are around saal g right now too

  200. edhelas

    I'm in the hacker room, just in front of the TARDIS and the wooden dome

  201. Link Mauve

    kalkin, where around Saal G?

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  203. Link Mauve

    Had a chat with koolfy, about OTR and OX and OMEMO and related as well as unrelated stuff. ^^

  204. kalkin

    Link Mauve: I'm currently outside where in the direction of saal1

  205. Link Mauve

    For hacking the world?

  206. kalkin

    The stairs down past the digital courage shop and right

  207. mathieui

    that threema talk was a bit disappointing, btw

  208. mathieui

    although there are some nice ideas on trust that could work even without their central server

  209. kalkin

    Link Mauve: Welcome to the Anthropocene? Wednesday, December 28, 2016 1:00 PM, Saal2

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  267. Tobias

    edhelas: so where are you about?

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  270. edhelas

    Tobias, I'm at the Raumzeit Labor table in the dev room

  271. Tobias

    edhelas: let me see if I can find that

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  371. Tobias

    goffi, so the example would look something like this http://ayena.de/files/xeps/sims.xhtml#usecases-microblogging

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