[x3d-public] X3DJSAIL JSON loader (yes!)

[John Carlson]

Note that that this feature is built entirely from the X3D sourceforge
repository, that is, it's provided independent of X3DJSONLD (note that the
main class is titled X3DJSONLD.java -- it's a pure java port of
X3DJSONLD.js, and any shared code between X3DJSAIL and X3DJSONLD is for
backup or testing reasons.

On Wed, May 20, 2020 at 8:21 PM John Carlson <yottzumm at gmail.com> wrote:

> https://www.web3d.org/specifications/java/X3DJSAIL.html
>
> say .json import/file load is TODO.
>
> Here is a sample Node.js file which shows the feature, and the Nashorn has
> a similar example.
>
> var java = require('java');
> var autoclass = require ('./X3Dautoclass');
> var X3DJSONLD = java.import("net.coderextreme.X3DJSONLD")
> var loader = new X3DJSONLD();
> var File = java.import("java.io.File")
> var jsobj = loader.readJsonFileSync(new
> File("./examples/HelloWorldProgramOutput.json"));
> var document = loader.loadJsonIntoDocumentSync(jsobj);
> console.log(loader.serializeDOMSync(loader.getX3DVersionSync(jsobj),
> document));
> var X3DLoaderDOM = java.import("org.web3d.x3d.jsail.X3DLoaderDOM")
> var xmlLoader = new X3DLoaderDOM();
> var X3D0 = xmlLoader.toX3dObjectTreeSync(document);
> X3D0.toFileX3DSync("./examples/Json.x3d");
> X3D0.toFileJSONSync("./examples/Json.json");
>
>
> Note that this is easily converted to Java.  I've done it once, in fact.
> All these pure Java functions (minus Sync) are available in Java code.
>
> This leverages a port provided to X3DJSAIL which does the JSON -> DOM
> conversion in the X3DJSONLD.java class.
>
> Might I suggest that browser vendors leverage X3DJSAIL jars and openjdk to
> support X3D JSON until a C/C++ version is complete?  Some lubrication ($$)
> is currently required to get a C/C++ version pushed out the door (I can't
> stand dealing with Xerces, CMake, autoconf), but last time I tried it, the
> alpha version worked.
>
> John
>
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