[jira] [Commented] (JENA-2016) JSON-LD expand problem with `"@type": "@id"`

["Rob Vesse (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/JENA-2016?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17249625#comment-17249625 ] 

Rob Vesse commented on JENA-2016:
---------------------------------

Jena uses the upstream {{java-jsonld}} library for our JSON-LD support, most likely this is an upstream bug there - https://github.com/jsonld-java/jsonld-java

> JSON-LD expand problem with `"@type": "@id"`
> --------------------------------------------
>
>                 Key: JENA-2016
>                 URL: https://issues.apache.org/jira/browse/JENA-2016
>             Project: Apache Jena
>          Issue Type: Bug
>          Components: RIOT
>    Affects Versions: Jena 3.16.0, Jena 3.17.0
>            Reporter: Pierre-Antoine Champin
>            Priority: Major
>
>  
> The following JSON-LD
>  
> {code:java}
> {
>  "@context": {
>      "tag:p": { "@type": "@id" }
>  },
>  "tag:p": [ "foo", 42, false ]
> }{code}
>  
> generates the following triples
>  
> {code:java}
> _:b0 <tag:p> <file:///tmp/foo> .
> _:b0 <tag:p> <file:///tmp/42> .
> _:b0 <tag:p> <file:///tmp/false> . 
> {code}
> while it should generate
>  
> {code:java}
> _:b0 <tag:p> <file:///tmp/foo> .
> _:b0 <tag:p> "42"^^<http://www.w3.org/2001/XMLSchema#integer> .
> _:b0 <tag:p> "false"^^<http://www.w3.org/2001/XMLSchema#boolean> .
> {code}
> Indeed, step 1 for the [value expansion algorithm|https://w3c.github.io/json-ld-api/#algorithm-5] states that the type mapping to `@id` is only considered if the value is a string.
> See for example in the JSON-LD playground: https://json-ld.org/playground/#startTab=tab-nquads&json-ld=%7B%22%40context%22%3A%7B%22tag%3Ap%22%3A%7B%22%40type%22%3A%22%40id%22%7D%7D%2C%22tag%3Ap%22%3A%5B%22foo%22%2C42%2Cfalse%5D%7D



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