Re: Collection/Container design - AS, Hydra, LDP, SIOC, ...

I accidentally forgot to reply all, so I'll CC the list back in here.

This problem doesn't apply to AS because we don't use "AS:follows" 
properties or similar

> ☮ elf Pavlik ☮ <mailto:perpetual-tripper@wwelves.org>
> 09 November 2014 01:23
> 1. Not sure if you wanted to send it just to or simply missed cc list
> 2. If you put collection directly as values of follows you will get some
> undesired consequences in RDF!
>
> * https://github.com/HydraCG/Specifications/issues/33
> * https://github.com/HydraCG/Specifications/issues/41
>
> Owen Shepherd <mailto:owen.shepherd@e43.eu>
> 08 November 2014 23:58
> Translating your Hydra sample to AS2 (as through the lens of 
> ActivityPump, and borrowing from AS1 where AS2 is currently missing):
> {
> "@id": "https://wwelves.org/perpetual-tripper",
> "@type": "as:Person",
> "follows": {
>    "@id": "https://wwelves.org/perpetual-tripper/follows",
>    "@type": "as:Collection",
>    "memberTypes": "as:Actor",
>    "totalItems": 23,
>    "items": [
>       "http://owenshepherd.net",
>       "https://e14n.com/evan",
>       ...
>    ]
> }
> }
>
> with the provisio that it must remembered that ActivityStreams 
> collections are *paged* - there may be more items than conveyed in the 
> items member, in which case you must page your way through the 
> collection to find them all. (When I get around to exhaustively 
> documenting collections in ActivityPump I'll likely provide a 
> guaranteed mechanism for requesting a given number of items at once 
> and require impls to support at least ~200)
>
> - Owen
> ☮ elf Pavlik ☮ <mailto:perpetual-tripper@wwelves.org>
> 08 November 2014 23:49
> Howdy,
>
> In Owen's draft of ActivityPump we can find some use cases for
> collections/containers:
> http://oshepherd.github.io/activitypump/ActivityPump.html#collections
>
> While ago I started page for comparing existing designs:
> https://www.w3.org/wiki/Socialwg/Collection_Comparison
>
> So far it only has examples in Hydra, I'll try to add AS and LDP
> versions ASAP. Collection of people I follow, using hydra:Collection
> would look something like:
>
> {
> "@context": [
> "http://www.w3.org/ns/hydra/context.jsonld",
> { "schema": "http://schema.org/" }
> ]
> "@id": "/perpetual-tripper",
> "collection": {
> "@id": "/pepetual-tripper/follows",
> "@type": "Collection",
> "manages": {
> "property": "schema:follows",
> "subject": "/perpetual-tripper"
> }
> "member: [
> "http://owenshepherd.net",
> "https://e14n.com/evan",
> ...
> ]
> }
> }
>
> For followers one can simply use manages block with object instead of
> subject
>
> "manages": {
> "property": "schema:follows",
> "object": "/perpetual-tripper"
> }
>
>
> Which provides clear way to reuse existing predicates while giving
> collection separate URI and additionally enabling paging.
>
> It looks like some ActivityStreams/Pump features will require putting
> constraint on members of collection. It currently uses "objectTypes"
> documented in under 'collection' in
> *
> https://github.com/activitystreams/activity-schema/blob/master/activity-schema.md#object-types
>
> ActivityPump draft uses it in:
> http://oshepherd.github.io/activitypump/ActivityPump.html#streams
>
> {
> "id": "https://example.com/~alice/my-stream",
> "objectType": "collection",
> "objectTypes": ["activity"]
> "items": [ ... ]
> }
>
> Could we collect on our wiki page other requirements for
> Collections/Containters which we currently stay aware of?
>
> Cheers!
>
>

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