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Warn or error if non-keyword strings having "@" are encountered · Issue #598 · json-ld/json-ld.org · GitHub
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apibest-practicesdeferIssue deferred to future Working GroupIssue deferred to future Working Groupspec-designsyntax
Description
Looking at a schema.org example for ItemList, there is a JSON-LD example which includes the fictitious @url
keyword, where they likely meant @id
.
{
"@context": "https://schema.org",
"@type": "ItemList",
"@url": "https://en.wikipedia.org/wiki/Billboard_200",
"name": "Top music artists",
"description": "The artists with the most cumulative weeks at number one according to Billboard 200",
"itemListElement": [
{
"@type": "ListItem",
"position": 1,
"item": {
"@type": "MusicGroup",
"name": "Beatles"
}
},
{
"@type": "ListItem",
"position": 2,
"item": {
"@type": "MusicGroup",
"name": "Elvis Presley"
}
},
{
"@type": "ListItem",
"position": 3,
"item": {
"@type": "MusicGroup",
"name": "Michael Jackson"
}
},
{
"@type": "ListItem",
"position": 3,
"item": {
"@type": "MusicGroup",
"name": "Garth Brooks"
}
}
]
}
There's nothing to signal an issue, and a JSON-LD processor will happily resolve this relative to @vocab
as https://schema.org/@url
. This creates a potential forward-compatibility issue if new keywords are introduced, as they are in 1.1. We might want to describe normative or suggested behavior if a processor encounters a string which could hold a keyword, but holds something else starting with @
.
cc/ @danbri
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