34 lines
1.1 KiB
Markdown
34 lines
1.1 KiB
Markdown
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# collections are kinda underspecced tbh
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loosely inspired by the submission of FEP-5bf0 Collection sorting and filtering
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## filtering
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you could pre-create collections that contain a subset of items, but there's no way to dynamically do server-side filtering; this has to be done client-side by downloading the entire collection and creating any useful indices
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## sorting
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OrderedCollection is mandated reverse-chronological but it should have been possible to specify the ordering
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taking schema.org/ItemList and schema.org/ListItem as prior art:
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- `ListItem.position` is the index
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- `ItemList.itemListOrder` is the type of ordering
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- `itemListOrderAscending`
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- `itemListOrderDescending`
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- `itemListUnordered`
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what might this imply is needed for activitypub?
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- `orderedBy`?
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- what about multiple ordering criteria? SQL has `ORDER BY`
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- actually, is a query language a good fit here?
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- `reversed`? more like `order: Ascending` or `order: Descending`?
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## querying
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how do you tell if an arbitrary object is included in a collection or not? without iterating over the entire collection, that is.
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## constraining range
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how do you know what a collection contains?
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