Re: GSOC idea: json api for plone

as I understand it json-ld is a kind of rdf over json
http://en.wikipedia.org/wiki/JSON-LD

look at http://www.ohloh.net/p/eea-rdfmarshaller to get an idea what this
can achieve
or live at http://iwlearn.net/iw-projects/970/@@rdf


I think in connection with https://stanbol.apache.org/ and
https://github.com/fusepool/fusepool-ecs
this could be a story to get plone into the semantic linked data space



On Sun, Feb 23, 2014 at 3:49 AM, Laurence Rowe <[email protected]> wrote:

> I think the complexities you mention apply more to the task of extracting
> semantic likes from unstructured content (e.g. from within a Plone rich
> text field.) JSON-LD is about semantically annotating structured json,
> where everything is already split into fields. You just need to say what
> those fields mean and which are links to other resources (reference fields
> in Plone). Basic support should be trivial to implement as you could just
> generate a json-ld context from an existing dexterity schema definition.
>
> You need to expend a significant amount of effort if you want to fully
> connect your metadata into the semantic web as you need to use terms and
> predicates that are also used by others. Plone already has partial support
> for dublin core metadata through the default templates rendering html link
> elements. You'd want a way to specify the predicate url on a dexterity
> schema field.
>
> It's a read-only standard, so it's not going to help with writes,
> JSON-Shema seems to be the relevant standard there. But even basic support
> gives your users the ability to pull down your metadata and load it into a
> SPARQL store for arbitrary querying, without writing custom code to parse
> and load your json.
>
> Laurence
>
> On 22 February 2014 16:01, Jens W. Klein <jens-/[email protected]> wrote:
>
>> Hi,
>>
>> I agree to have a json api for plone. This is essential these days.
>>
>> Ad json.ld:
>>
>> json.ld is - as the name says - a linked data format, thus it predicts
>> semantic links between the content - in order to make it semantic
>> searchable. So the main purpose of json-ld is (more comprehensive, but
>> like RDF) to provide triples (subject, predicate, object) about the
>> content, probably including all its information prepared in this way.
>>
>> I fear in most cases this is difficult. To link data in a sematic
>> approach we need to inspect this data (manually or automatic) in order
>> to enrich the links between the data. The Apache Stanbol Project helps
>> here to make this automatic, but I fear this is a  bit heavyweight for
>> the average Plone "user".
>>
>> So imo json-ld is not the right format for the purpose of a simple json
>> api. IMO a simple TTW crud API is what we want in 95% of cases.
>>
>> I really would like to see Plone supporting json-ld anyway. But its out
>> of scope of a generic json-api which solves the major daily use-cases of
>> the Plone integrators there out in the wild.
>>
>> just my 0.02 Euro
>>
>> Jens
>>
>> On 2014-02-14 22:25, Johannes Raggam wrote:
>> > After discussing this topic with other sprinters at the cathedralsprint,
>> > I think a JSON API for Plone would make a nice project.
>> >
>> > Some of us feel a strong need for a generic JSON API. That can help us
>> > to build modern user interfaces, decoupled from the backend and for data
>> > exchange with other web services. Best would be to implement some
>> > standard, like JSON-LD ( http://json-ld.org/ ,
>> > http://www.w3.org/TR/json-ld/ ), which'd give us semantic data
>> exchange,
>> > which is awesome (more and more web services are agnostic about their
>> > data-backend and implement real mashup services). Or Hydra:
>> > Hypermedia-Driven Web APIs http://www.markus-lanthaler.com/hydra/
>> >
>> > I agree with Martin, that designing an API needs much experience. But I
>> > don't see here a blocker for a GSOC project:
>> >
>> > - There are open standards, which can be implemented (as mentioned
>> > above),
>> > - The mentor can guide, review and optimize the API,
>> > - The framework can do this via reviews also.
>> >
>> > So, what about that?
>> >
>> > Best,
>> > Johannes
>>
>> --
>> Klein & Partner KG, member of BlueDynamics Alliance
>>
>>
>>
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