[x3d-public] X3DJSONLD ... converts XML to JSON client side!

[John Carlson]

Because X3D JSON is very different from X3D XML.  They don’t map well with standard methods.

Yes, it will take a little more work to handle circular dependencies, and all the extra variables in DOM.

Are you proposing JSON.stringify(xmlDom)?  I think that would generate way to much data, and XMLSerializer would work better, but XMLSerializer produces XML.  But that’s essentially what DOM2JSONSerializer is, serializes DOM to X3D JSON.  Duh!

The revolution here is that I can do it client side.  I already had X3dToJson.xslt to do it server side. X3dToJson.xslt doesn’t work client side, last I checked.

I don’t think you’ve found the golden egg yet, Leonard, but see below.

John

I encourage you to propose an X3D JSON standard based on this to see if it will fly.  Send some PROTO examples to the mailing list—believe me, I tried.  The first step is to standardize X3D JSON, not find an XML to JSON converter.  But to finalize the X3D JSON standard, we need two implementations.  Now we have 2 implementations.

Please proposed an X3D JSON standard that is simpler, PLEASE????

Thanks!

Sent from Mail for Windows 10

From: Leonard Daly
Sent: Tuesday, March 20, 2018 11:30 AM
To: x3d-public at web3d.org
Subject: Re: [x3d-public] X3DJSONLD ... converts XML to JSON client side!

John,

I am wondering how this might differ from the following built-in capabilities described below. What does your code do differently than these built-in methods?


XD is an (string) XML fragment, then this fragment can be inserted into the DOM (either as part of the document of a separate sub-tree) using

var parser = new DOMParser();
var xmlDom = parser.parserFromString (XD, 'application/xml');

[Ref: https://developer.mozilla.org/en-US/docs/Web/API/DOMParser]

At this point xmlDom is a DOM tree, but not inserted into the HTML document DOM.

It is possible to go back to XML string using

var S = new XMLSerializer();
var xmlString = s.serializeToString (xmlDom);

[Ref: https://developer.mozilla.org/en-US/docs/Web/API/XMLSerializer]

There is the JSON.stringify method 

[Ref: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify and https://stackoverflow.com/questions/46880822/how-to-json-stringify-a-dom-element - answer 1]

There is at least one other GItHub project (https://gist.github.com/sstur/7379870) that converts to/from JSON and strings/DOM.

Going from an internal object to JSON takes a little careful work to make sure the tree is correctly handled and the code does not follow the circular loops that are present in DOM.


Leonard Daly



The X3D JSON Loader now converts XML to JSON client-side, for your nefarious purposes!
 
https://coderextreme.net/X3DJSONLD/src/main/html/index.html
 
Enjoy loading!
 
John



_______________________________________________
x3d-public mailing list
x3d-public at web3d.org
http://web3d.org/mailman/listinfo/x3d-public_web3d.org

-- 
Leonard Daly
3D Systems & Cloud Consultant
LA ACM SIGGRAPH Past Chair
President, Daly Realism - Creating the Future 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://web3d.org/pipermail/x3d-public_web3d.org/attachments/20180320/593afd3c/attachment-0001.html>