Hi Andreas,

Once again I must confess that I don’t know enough about eXist-db.
What I can say is that only some JSON features were standardized, and
not necessarily the ones that you find in eXist-db, BaseX and other
processors (which were implemented much earlier).

I have just referenced some of our JSON features in another mail some
minutes ago [1,2]. They might give you an impression what is possible
with BaseX, and how it differs from eXist-db.

> Or how can I generate a JSON result that is compatible with the existing JSON 
> response from eXist-dB?

It may be best to export the eXist-db documents as JSON and reimport
back (i.e., convert them to our JSON XML representation) in BaseX.

Out of interest: Is the eXist-db JSON format fully bidirectional? If
yes, we could think about adding the conversion rules to the next
version of BaseX.

Best,
Christian

[1] http://docs.basex.org/wiki/XQuery_3.1#JSON_Functions
[2] http://docs.basex.org/wiki/Json_Module



> /rest/foo/?run=foo.xql&method=json
>
> generates an HTTP response with
>
> Content-Type: application/json;charset=utf-8
>
> but the output is a quoted XML string like:
>
> "<item><uri>\/foo\/de\/ayapedia\/addendums\/ernaehrung_9861fc6a-ba68-11e8-a8a1-001c4210b7a0\/current-20180920-111838.bak\/xml\/index.xml<\/uri><title>Ernährung<\/title><description\/><language>de<\/language><status>current<\/status><area>ayapedia<\/area><path\/><date>2018-09<\/date><url\/><atc_code\/><guideline_id>bef53078-2d8d-42d1-af8c-b3d387dfa52e<\/guideline_id><plone_uuid>464520ec154a42839b9f5d2635caccaf<\/plone_uuid><old_authors_additional\/><authors_additional>für
>  den Arbeitskreis Ernährung, Stoffwechsel und Bewegung der 
> DGHO<\/authors_additional><documenttype>ayapedia<\/documenttype><societies 
> xmlns:json=\"http:\/\/basex.org\/modules\/json\" 
> json:array=\"true\">dgho<\/societies><guideline_topics 
> xmlns:json=\"http:\/\/basex.org\/modules\/json\" 
> json:array=\"true\">183<\/guideline_topics><authors 
> xmlns:json=\"http:\/\/basex.org\/modules\/json\" 
> json:array=\"true\">9211<\/authors><authors 
> xmlns:json=\"http:\/\/basex.org\/modules\/json\" 
> json:array=\"true\">5577<\/authors><authors 
> xmlns:json=\"http:\/\/basex.org\/modules\/json\" 
> json:array=\"true\">13728<\/authors><authors 
> xmlns:json=\"http:\/\/basex.org\/modules\/json\" 
> json:array=\"true\">373215<\/authors><\/item>"
>
> Calling
>
> /rest/foo/?run=foo.xql&method=json&json=format=jsonml"
>
> finally generates JSON but not in the related format.
>
> Isn't the JSON serialization supposed being standardized and compatible?
> Or how can I generate a JSON result that is compatible with the existing JSON 
> response from eXist-dB?
>
> Andreas
>
>

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