Re: Question about framing

Check out section 2.1.4 Matching on Values [1].

You can use a wild-card in a value object and fix @language, like so [1]:

{
  "@explicit": true,
  "@context": {
    "label_it": {
      "@id": "skos:prefLabel",
      "@language": "it"
    },
    "label_fr": {
      "@id": "skos:prefLabel",
      "@language": "fr"
    }
  },
  "skos:prefLabel": {
    "@value": {},
    "@language": "it"
  }
}

Gregg Kellogg
gregg@greggkellogg.net

[1] https://www.w3.org/TR/json-ld11-framing/#matching-on-values <https://www.w3.org/TR/json-ld11-framing/#matching-on-values>
[2] https://tinyurl.com/yfr3bvxe <https://tinyurl.com/yfr3bvxe>


> On Oct 4, 2022, at 2:05 PM, Roberto Polli <robipolli@gmail.com> wrote:
> 
> Hi Gregg,
> 
> thanks for your reply! I didn't know the playground was able to communicate the frame: cool.
> The proposed solution shows even further entries that I don't want to show, eg. the @lang: en one.
> 
> https://tinyurl.com/yjk3dr76 <https://tinyurl.com/yjk3dr76>
> 
> If this is the correct behavior, IIUC the selection algorithm works at the predicate level
> instead of at the triple level (eg. all of the skos:prefLabel is selected, and not only the triples matching each possible language)...
> 
> Can you point me to the framing specification algorithm that selects the nodes to show?
> 
> Thanks++,
> R.
>  
> 
> On Tue, 4 Oct 2022 at 22:30, Gregg Kellogg <gregg@greggkellogg.net <mailto:gregg@greggkellogg.net>> wrote:
> You’re running afoul some frame selection logic, which ends up selecting just selects one of the values. What happens is that the frame gets expanded, and you show two values for the single property “skos:prefLabel”. You probably want to either have an empty frame, or wild-card “skos:prefLabel”.
> 
> These things are best communicated using links to the playground, such as https://tinyurl.com/yfr3bvxe <https://tinyurl.com/yfr3bvxe>, which uses the following frame:
> 
> {
>   "@context": {
>     "label_it": {"@id": "skos:prefLabel","@language": "it" },
>     "label_fr": {"@id": "skos:prefLabel","@language": "fr" }
>   },
>   "skos:prefLabel": {}
> }
> 
> Gregg Kellogg
> gregg@greggkellogg.net <mailto:gregg@greggkellogg.net>
> 
>> On Oct 4, 2022, at 10:10 AM, Roberto Polli <robipolli@gmail.com <mailto:robipolli@gmail.com>> wrote:
>> 
>> Dear folks,
>> 
>> I am struggling with framing. The result is the same with both pyld and the playground. 
>> 
>> Given a multi-language JSON-LD I want to pick two skos:prefLabels, like that
>> 
>> {
>>   "label_it": {"@language": "it", "@value": {}},
>>   "label_fr": {"@language": "fr", "@value": {}},
>>   "@context": {
>>     "label_it": {"@id": "skos:prefLabel","@language": "it" },
>>     "label_fr": {"@id": "skos:prefLabel","@language": "fr" },
>>   }
>> }
>> 
>> Full gist here
>> - https://gist.github.com/ioggstream/e9c4748208728c5abca34a7c6e309284 <https://gist.github.com/ioggstream/e9c4748208728c5abca34a7c6e309284>
>> 
>> but the framing mechanism only shows the last field (e.g. label_fr), eg.
>> 
>> { label_fr: France }  # No Italy here!
>> 
>> Instead, if I don't filter, like below, the framing mechanism dumps all unmentioned languages in
>> "skos:prefLabel" field, even if "skos:prefLabel" is not mentioned between the "@explicit" fields.
>> 
>> {
>>   "label_it": {},
>>   "label_fr": {},
>>   "@context": {
>>     "label_it": {"@id": "skos:prefLabel","@language": "it" },
>>     "label_fr": {"@id": "skos:prefLabel","@language": "fr" },
>>   }
>> }
>> 
>> Is there a standard way to tell "framing" to strip off specific/unwanted fields like "skos:prefLabel"?
>> 
>> Thanks ++, <>
>> R.
>>  <>
>> 
>> 
>