- From: Gregg Kellogg <gregg@greggkellogg.net>
- Date: Wed, 17 Aug 2016 13:43:01 -0700
- To: Dave Longley <dlongley@digitalbazaar.com>
- Cc: Aymeric Brisse <aymeric.brisse@gmail.com>, JSON-LD CG <public-linked-json@w3.org>
Gregg Kellogg gregg@greggkellogg.net > On Aug 17, 2016, at 12:50 PM, Dave Longley <dlongley@digitalbazaar.com> wrote: > > On 08/17/2016 12:28 PM, Aymeric Brisse wrote: >> Hello Gregg & Dave, >> >> I am currently dealing with another problem. Let's say 2 resources >> are linked together by more than 1 predicate. >> >> As a JSON API developer that wants to return a tree and not a graph >> I expect that the following LD framed graph... >> >> [snip] >> >> ... to duplicate some parts of it if needed >> >> That way the developper don't have to deal with an identitymap >> pattern just to parse the JSON, meaning that he can access directly >> to the hash object["pmcore:relB"]["rdfs:label"]["@value"] >> >> How can it be achieved in an automatic manner? > > The JavaScript, Python, and PHP framing implementations support several > framing "embed" options: > > @always - always embed (nest) nodes except when a circular reference is > encountered, even if it duplicates data > > @last - (the default) only embed the last occurrence of a particular > node so that the data is not modified via duplication > > @never - never embed nodes, always use simple references > > Some more discussion is here: > > https://github.com/json-ld/json-ld.org/issues/377 > > The default embed option can be changed at the API level by passing in > a flag to the `frame` call. The embed option can also be set at a > more granular level within the frame itself. I've done this on the > playground using your example data and the "@always" option, to produce > what I believe is the desired output: > > http://json-ld.org/playground/#/gist/fa39b164da8dd39e2e9c9991d8392efb > > I don't know if the Ruby implementation supports these features yet. I believe I support all of the embedding options that Dave’s does. BTW, on my short-term list is to try to update the Framing spec based on this common behavior. Gregg > -- > Dave Longley > CTO > Digital Bazaar, Inc. > http://digitalbazaar.com
Received on Wednesday, 17 August 2016 20:43:34 UTC