[x3d-public] X3D JSON Schema - validating comments inside a USEnode
John Carlson
yottzumm at gmail.com
Thu Feb 10 14:20:10 PST 2022
Good points, Joe. This particular issue was trying to limit the fields
that go along with a @USE field in JSON. One camp was thinking there should
only be a @class field along with @USE, and another was saying we also
needed #comment with a -children field. We may choose another way of
adding comments, I’m not opposed to that, and I favor that, if we can get
everyone to agree. Otherwise we only have one technique for adding
#comment in JSON. That may be limiting us.
I’ve pretty much always advocated a more XML-like approach for JSON, but
there was a desire to make JSON look like VRML, I guess.
I’m hoping we can discover some kind of sharing mechanism in JSON schema to
reduce heavy duplication.
Anyway, here we are.
John
On Thu, Feb 10, 2022 at 3:36 PM Joseph D Williams <joedwil at earthlink.net>
wrote:
>
> - In general we want to be able to “round trip” convert between any of
> the X3D encodings without loss of X3D scene information, including comments.
>
>
>
> This really shows when, like I did for the kicker, it helped to set a
> comment to identify each coordinate point of the skin shape. The objective
> was to keep track of point index in order of appearance according to names
> assigned to standard surface features. At the first transcoding from
> classic to xml those comments were transported into a big comment at the
> end of the xml. Then when back to classic, of course those comments
> remained basically disassociated from the individual point that was
> intended to be documented.
>
> I sort of knew what was going to happen because when the mf points field
> becomes an attr, it don’t like to find embedded comments. The xml mf field
> only contains sfs to make mfs and needs comment childs or meta childs,
> while the classic mf can have a comment for each individual sf in the mf
> list. So I didn’t compensate using a different style of comments and so the
> reference became basically useless unless the transform rules are known.
>
>
>
> What has changed since we chose our sf and mf xmlization path? Well for
> one thing it ought to be a lot easier to just say Hey if we wanna put
> comments for each sf in the mf list, then OK Thus it will be ok to comment
> an sf in an mf with end of line comment for the mf numeric lists.
>
>
>
> Same with the json/gltF encodings, embedded comment to document an sf in
> the mf should be ok, and directly transcodable from xml or json or gltf to
> classic.
>
>
>
> Thanks,
>
> Joe
>
>
>
> *From: *Brutzman, Donald (Don) (CIV) <brutzman at nps.edu>
> *Sent: *Wednesday, February 9, 2022 9:01 PM
> *To: *John Carlson <yottzumm at gmail.com>
> *Cc: *X3D Graphics public mailing list <x3d-public at web3d.org>
> *Subject: *Re: [x3d-public] X3D JSON Schema - validating comments inside
> a USEnode
>
>
>
> [Adjusted subject line to match topic] Hello again John, thanks for
> further detail.
>
>
>
> The following is valid XML:
>
>
>
> <Shape USE='Torus'>
> <!-- Knot -->
> </Shape>
>
>
>
> As is the following VRML fragment, if found in the right place:
>
>
>
> USE Torus # Knot
>
>
>
> Certainly the most common place to find comments in practice will be as
> children within a grouping node, or at the top of a scene. So it is
> clearly an important use case to support.
>
>
>
> In general we want to be able to “round trip” convert between any of the
> X3D encodings without loss of X3D scene information, including comments.
>
>
>
> So if your JSON schema is not validating such comments, may I recommend
> that you add such support. Good luck!
>
>
>
> all the best, Don
>
> --
>
> Don Brutzman Naval Postgraduate School, Code USW/Br
> brutzman at nps.edu
>
> Watkins 270, MOVES Institute, Monterey CA 93943-5000 USA
> +1.831.656.2149
>
> X3D graphics, virtual worlds, Navy robotics https://
> faculty.nps.edu/brutzman
>
>
>
> *From:* x3d-public <x3d-public-bounces at web3d.org> *On Behalf Of *John
> Carlson
> *Sent:* Wednesday, February 9, 2022 8:02 PM
> *To:* X3D Graphics public mailing list <x3d-public at web3d.org>
> *Subject:* Re: [x3d-public] X3D JSON Schema updated for axis++ defaults
> (regression failure)
>
>
>
> Report on JSON file generated by X3dToJson.xslt, download from
> https://www.web3d.org/x3d/content/examples/Basic/StudentProjects/TrebuchetIndex.html
>
>
>
> Note that the JSON linked file (on the above linked page) is essentially
> identical to the February 9th version, except for the date.
>
>
>
> X3dToJson.xslt needs to be updated to not produce comments inside
> -children fields at the same level as @USE field. There should be NO
> -children fields at the same level as @USE in X3DJSON
>
>
>
> I believe this is the JSON in question. Note @USE and -children at the
> same level.
>
> ==
>
> { "Shape":
> {
> "@USE":"Torus",
> "-children":[
> {
> "#comment":"Knot"
> }
> ]
> }
>
> ==
>
> This appears to be the problematic XML, but double check me please (there
> are two Knot comments).
>
> <Shape USE='Torus'>
> <!-- Knot -->
> </Shape>
>
>
>
> ==
>
>
>
> Please suggest an alternate JSON encoding of this XML
>
>
> Updated JSON schema (with Bounded Object updates) available at normal
> locations (see messages included).
>
>
>
> Thanks!
>
>
>
> John
>
>
>
> $ node x3dvalidate.js Trebuchet.json
> Can only validate version 4.0 presently. Switching version to 4.0.
> Loading schema
> Parsing schema
> Adding schema
> Schema 4.0 added
> Schema 4.0 compiled
>
> ================================================================================
> File: Trebuchet.json
> Error reading Trebuchet.json
> keyword: required
> instancePath: /X3D/Scene/-children/8/Transform
> message: must have required property @USE
> params: {"missingProperty":"@USE"}
> file: Trebuchet.json
> version: 3.0
>
> keyword: required
> instancePath: /X3D/Scene/-children/8/Transform/-children/8/Transform
> message: must have required property @USE
> params: {"missingProperty":"@USE"}
> file: Trebuchet.json
> version: 3.0
>
> keyword: required
> instancePath:
> /X3D/Scene/-children/8/Transform/-children/8/Transform/-children/4/Transform
> message: must have required property @USE
> params: {"missingProperty":"@USE"}
> file: Trebuchet.json
> version: 3.0
>
> keyword: required
> instancePath:
> /X3D/Scene/-children/8/Transform/-children/8/Transform/-children/4/Transform/-children/0/Transform
> message: must have required property @USE
> params: {"missingProperty":"@USE"}
> file: Trebuchet.json
> version: 3.0
>
> keyword: additionalProperties
> instancePath:
> /X3D/Scene/-children/8/Transform/-children/8/Transform/-children/4/Transform/-children/0/Transform/-child
> ren/0/Shape
> message: must NOT have additional properties
> params: {"additionalProperty":"-children"}
> file: Trebuchet.json
> version: 3.0
>
> keyword: additionalProperties
> instancePath:
> /X3D/Scene/-children/8/Transform/-children/8/Transform/-children/4/Transform/-children/0/Transform/-child
> ren/0/Shape
> message: must NOT have additional properties
> params: {"additionalProperty":"@USE"}
> file: Trebuchet.json
> version: 3.0
>
> keyword: oneOf
> instancePath:
> /X3D/Scene/-children/8/Transform/-children/8/Transform/-children/4/Transform/-children/0/Transform/-child
> ren/0/Shape
> message: must match exactly one schema in "oneOf"
> params: {"passingSchemas":null}
> file: Trebuchet.json
> version: 3.0
>
> keyword: oneOf
> instancePath:
> /X3D/Scene/-children/8/Transform/-children/8/Transform/-children/4/Transform/-children/0/Transform
> message: must match exactly one schema in "oneOf"
> params: {"passingSchemas":null}
> file: Trebuchet.json
> version: 3.0
>
> keyword: oneOf
> instancePath:
> /X3D/Scene/-children/8/Transform/-children/8/Transform/-children/4/Transform
> message: must match exactly one schema in "oneOf"
> params: {"passingSchemas":null}
> file: Trebuchet.json
> version: 3.0
>
> keyword: oneOf
> instancePath: /X3D/Scene/-children/8/Transform/-children/8/Transform
> message: must match exactly one schema in "oneOf"
> params: {"passingSchemas":null}
> file: Trebuchet.json
> version: 3.0
>
> keyword: oneOf
> instancePath: /X3D/Scene/-children/8/Transform
> message: must match exactly one schema in "oneOf"
> params: {"passingSchemas":null}
> file: Trebuchet.json
> version: 3.0
>
>
>
> On Mon, Feb 7, 2022 at 11:12 PM John Carlson <yottzumm at gmail.com> wrote:
>
> New fetchable X3D V4.0 JSON Schema fetchable from:
>
>
>
>
> https://github.com/coderextreme/X3DJSONLD/blob/master/src/main/schema/x3d-4.0-JSONSchema.json
> <https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fcoderextreme%2FX3DJSONLD%2Fblob%2Fmaster%2Fsrc%2Fmain%2Fschema%2Fx3d-4.0-JSONSchema.json&data=04%7C01%7Cbrutzman%40nps.edu%7Cbd4c3b3b4b9c480a478708d9ec4a3731%7C6d936231a51740ea9199f7578963378e%7C0%7C0%7C637800626508897471%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=9BFtdH4oQ3m2rgQFhZLZIykqyJx29cTQBstsYI68gUM%3D&reserved=0>
>
>
>
> Includes changes to title...word ordering and date time (now being the
> time generated.
>
>
>
> On Thu, Jan 27, 2022 at 2:55 PM John Carlson <yottzumm at gmail.com> wrote:
>
> You may now grab new versions of X3D JSON schema:
>
>
>
> X3DJSONLD/x3d-4.0-JSONSchema.json at master · coderextreme/X3DJSONLD
> (github.com)
> <https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fcoderextreme%2FX3DJSONLD%2Fblob%2Fmaster%2Fsrc%2Fmain%2Fschema%2Fx3d-4.0-JSONSchema.json&data=04%7C01%7Cbrutzman%40nps.edu%7Cbd4c3b3b4b9c480a478708d9ec4a3731%7C6d936231a51740ea9199f7578963378e%7C0%7C0%7C637800626508897471%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=9BFtdH4oQ3m2rgQFhZLZIykqyJx29cTQBstsYI68gUM%3D&reserved=0>
>
>
>
> (Includes Navigation.type update to JSON string instead of JSON array)
>
>
>
> Thanks for your support!
>
> John
>
>
>
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