[x3d-public] X3DJSAIL, X3dToJava.xslt and DOMX3DLoaderObjecttesting:anotherClassCastException

Don Brutzman brutzman at nps.edu
Wed Jun 13 21:27:31 PDT 2018


On 6/8/2018 12:12 AM, John Carlson wrote:
> I would like for you to make the classpaths portable between windows and Ubuntu in www.web3d.org/x3d/stylesheets/java/nashorn/build.xml <http://www.web3d.org/x3d/stylesheets/java/nashorn/build.xml> .  Search for ;

OK understood now.  First some background:

1. Ant classpath is supposed to be colon/semicolon agnostic, regardless of operating system.
    https://ant.apache.org/manual/using.html

2. You own the nashorn subdirectory tree so you can do anything you want there.  I can followup by confirming elsewhere.

3. I am running

don at it154928 ~
$ java -version
java version "1.8.0_172"
Java(TM) SE Runtime Environment (build 1.8.0_172-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.172-b11, mixed mode)

4.I went into that build.xml and changed entries like

	classpath="${java.classes.dir};${java.jars.dir}/${jsai.full.archive.jar.name}
to
	classpath="${java.classes.dir}:${java.jars.dir}/${jsai.full.archive.jar.name}

5. That change had no effect on output of build.xml test.nashorn, copy follows
==============================================================================
ant -f E:\\x3d-code\\www.web3d.org\\x3d\\stylesheets\\java\\nashorn test.nashorn
test.nashorn:
Compile:
Compiling 1 source file to E:\x3d-code\www.web3d.org\x3d\stylesheets\java\classes
Compiling 1 source file to E:\x3d-code\www.web3d.org\x3d\stylesheets\java\classes
Copy:
Copying 1 file to E:\x3d-code\www.web3d.org\x3d\stylesheets\java\nashorn\examples
Copying E:\x3d-code\www.web3d.org\x3d\stylesheets\java\examples\HelloWorldProgramOutput.x3d to E:\x3d-code\www.web3d.org\x3d\stylesheets\java\nashorn\examples\HelloWorldProgramOutput.x3d
Copying 1 file to E:\x3d-code\www.web3d.org\x3d\stylesheets\java\nashorn\examples
Copying E:\x3d-code\www.web3d.org\x3d\stylesheets\java\examples\HelloWorldProgramOutput.json to E:\x3d-code\www.web3d.org\x3d\stylesheets\java\nashorn\examples\HelloWorldProgramOutput.json
Run:
parameter: source file HelloWorldProgramOutput.x3d filesize 21195 bytes, parsed using Document Object Model (DOM) X3DLoader
parameter: "-tojs" for conversion to X3DJSONLD JavaScript source
parameter: "-toFile" "../nashorn/examples/HelloWorldProgramOutput.Nashorn.js" for result file name root ../nashorn/examples/HelloWorldProgramOutput.Nashorn
convert to JS JavaScript:
Warning: toFileJavaScript() is overwriting prior file ../nashorn/examples/HelloWorldProgramOutput.Nashorn.js
Script DEF=colorTypeConversionScript contains CDATA source-code text, copied as "#sourceText" using "strings" mode
Script DEF=MaterialModulatorScript contains CDATA source-code text, copied as "#sourceText" using "strings" mode
[Error] TODO problem handling local exception within CommandLine, exiting
org.web3d.x3d.sai.X3DException: ScriptException when processing fileName ..\nashorn\examples\HelloWorldProgramOutput.Nashorn.js.intermediate.js, unable to save result: javax.script.ScriptException: TypeError: Cannot load script from nashorn/jvm-npm.js in ../nashorn/examples/HelloWorldProgramOutput.Nashorn.js.intermediate.js at line number 1
	at org.web3d.x3d.jsail.Core.X3DObject.toFileJavaScript(X3DObject.java:1662)
	at org.web3d.x3d.jsail.CommandLine.run(CommandLine.java:628)
	at org.web3d.x3d.jsail.CommandLine.main(CommandLine.java:163)
parameter: source file HelloWorldProgramOutput.x3d filesize 21195 bytes, parsed using Document Object Model (DOM) X3DLoader
parameter: "-toJSON" for conversion to JSON encoding
parameter: "-toFile" "../nashorn/examples/HelloWorldProgramOutput.Java.json" for result file name root ../nashorn/examples/HelloWorldProgramOutput.Java
convert to JSON:
Warning: toFileStylesheetConversion(X3dToJson.xslt) is overwriting prior file ../nashorn/examples/HelloWorldProgramOutput.Java.json
Script DEF=colorTypeConversionScript contains CDATA source-code text, copied as "#sourceText" using "strings" mode
Script DEF=MaterialModulatorScript contains CDATA source-code text, copied as "#sourceText" using "strings" mode
file conversion successful: HelloWorldProgramOutput.Java.json (40043 bytes)
parameter: source file HelloWorldProgramOutput.x3d filesize 21195 bytes, parsed using Document Object Model (DOM) X3DLoader
parameter: "-toX3D" for conversion to X3D encoding
parameter: "-toFile" "../nashorn/examples/HelloWorldProgramOutput.Java.x3d" for result file name root ../nashorn/examples/HelloWorldProgramOutput.Java
convert to X3D:
Warning: toFileX3D() is overwriting prior file ../nashorn/examples/HelloWorldProgramOutput.Java.x3d
file conversion successful: HelloWorldProgramOutput.Java.x3d (21195 bytes)
===========================================
HelloWorldProgramOutput.Java.x3d
1 file(s) have been successfully validated.
1 file(s) have been successfully validated.
matches HelloWorldProgramOutput.x3d: true
===========================================
===========================================
HelloWorldProgramOutput.Java.json
matches HelloWorldProgramOutput.json: true
===========================================
script:
../nashorn/examples/HelloWorldProgramOutput.Nashorn.js:1 TypeError: Cannot load script from nashorn/node/X3Dautoclass.js
Result: 102
===========================================
HelloWorldProgramOutput.Java.x3d
matches HelloWorldProgramOutput.Nashorn.js.new.x3d: false
===========================================
===========================================
HelloWorldProgramOutput.Java.json
matches HelloWorldProgramOutput.Nashorn.js.new.json: false
===========================================
../nashorn/examples/Nashorn.js:1 TypeError: Cannot load script from nashorn/node/X3Dautoclass.js
Result: 102
===========================================
HelloWorldProgramOutput.x3d
matches Nashorn.x3d: false
===========================================
===========================================
HelloWorldProgramOutput.x3d
matches Nashorn0.x3d: false
===========================================
../nashorn/examples/Json.js:1 TypeError: Cannot load script from nashorn/node/X3Dautoclass.js
Result: 102
===========================================
HelloWorldProgramOutput.x3d
matches Json.x3d: false
===========================================
HelloWorldProgramOutput.json
matches Json.json: false
BUILD SUCCESSFUL (total time: 18 seconds)
==============================================================================

so more sleuthing needed... hope this comparison testing helps.

v/r Don


> On Fri, Jun 8, 2018, 1:39 AM Don Brutzman <brutzman at nps.edu <mailto:brutzman at nps.edu>> wrote:
> 
>     Apologies John, not tracking you on this one.  readAllBytes is in your code, not clear if you want me to replace a classpath separator with colon in documentation - or what.
> 
>     Please advise, TIA.
> 
>     On 6/7/2018 8:56 PM, John Carlson wrote:
>      > Then hold at jdk 8.   Doesn't mean you can't fix a bug that's unrelated to JDK 8.
>      >
>      > On Thu, Jun 7, 2018, 11:46 PM Don Brutzman <brutzman at nps.edu <mailto:brutzman at nps.edu> <mailto:brutzman at nps.edu <mailto:brutzman at nps.edu>>> wrote:
>      >
>      >     Sorry but no, advancing a version in Java is a slippery slope if everything can't advance together.  Am holding at JDK 8 until Netbeans (and thus X3D-Edit) gets upgraded to JDK 9 or 10.
>      >
>      >     On 6/6/2018 4:07 PM, John Carlson wrote:
>      >      > Full script under OpenJDK 8,  Ubuntu on Windows 10.  Log attached.  The readAllBytes issue will be fixed by Java 9.  Is there a way to set your ant
>      >      > JDK to JDK 9 inside NetBeans?  Wondering.
>      >      >
>      >      > John
>      >      >
>      >      > $ cd /mnt/c/x3d-code/www.web3d.org/x3d/stylesheets/java/ <http://www.web3d.org/x3d/stylesheets/java/> <http://www.web3d.org/x3d/stylesheets/java/>
>      >      >
>      >      > $ javac -cp lib/javax.json-api-1.0.jar src/net/coderextreme/X3DJSONLD.java
>      >      >
>      >      > $ cp src/net/coderextreme/X3DJSONLD.class classes/net/coderextreme/
>      >      >
>      >      > # use ; instead of : in command prompt and git bash
>      >      >
>      >      > $ jjs -J-Djava.class.path=jars/X3DJSAIL.3.3.full.jar:classes nashorn/examples/Json.js
>      >      >
>      >      > $ diff -w nashorn/examples/HelloWorldProgramOutput.Java.x3d nashorn/examples/Json.x3d
>      >      >
>      >      > You should be able to duplicate the error with JDK 8 this way.  Command prompt will differ slightly.
>      >      >
>      >      > John
>      >      >
>      >      > Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10
>      >      >
>      >      > *From: *John Carlson <mailto:yottzumm at gmail.com <mailto:yottzumm at gmail.com> <mailto:yottzumm at gmail.com <mailto:yottzumm at gmail.com>>>
>      >      > *Sent: *Wednesday, June 6, 2018 6:06 PM
>      >      > *To: *Don Brutzman <mailto:brutzman at nps.edu <mailto:brutzman at nps.edu> <mailto:brutzman at nps.edu <mailto:brutzman at nps.edu>>>
>      >      > *Cc: *x3d-public at web3d.org <mailto:x3d-public at web3d.org> <mailto:x3d-public at web3d.org <mailto:x3d-public at web3d.org>> <mailto:x3d-public at web3d.org <mailto:x3d-public at web3d.org> <mailto:x3d-public at web3d.org <mailto:x3d-public at web3d.org>>>
>      >      > *Subject: *RE: X3DJSAIL, X3dToJava.xslt and DOMX3DLoaderObjecttesting:anotherClassCastException
>      >      >
>      >      > Under OpenJDK 8 on Ubuntu under windows, the jjs command is:
>      >      >
>      >      > $ jjs -J-Djava.class.path=jars/X3DJSAIL.3.3.full.jar:classes nashorn/examples/Json.js
>      >      >
>      >      > And the cd command is:
>      >      >
>      >      > $ cd /mnt/c/x3d-code/www.web3d.org/x3d/stylesheets/java/ <http://www.web3d.org/x3d/stylesheets/java/> <http://www.web3d.org/x3d/stylesheets/java/>
>      >      >
>      >      > Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10
>      >      >
>      >      > *From: *John Carlson <mailto:yottzumm at gmail.com <mailto:yottzumm at gmail.com> <mailto:yottzumm at gmail.com <mailto:yottzumm at gmail.com>>>
>      >      > *Sent: *Wednesday, June 6, 2018 5:37 PM
>      >      > *To: *Don Brutzman <mailto:brutzman at nps.edu <mailto:brutzman at nps.edu> <mailto:brutzman at nps.edu <mailto:brutzman at nps.edu>>>
>      >      > *Cc: *x3d-public at web3d.org <mailto:x3d-public at web3d.org> <mailto:x3d-public at web3d.org <mailto:x3d-public at web3d.org>> <mailto:x3d-public at web3d.org <mailto:x3d-public at web3d.org> <mailto:x3d-public at web3d.org <mailto:x3d-public at web3d.org>>>
>      >      > *Subject: *RE: X3DJSAIL, X3dToJava.xslt and DOM X3DLoaderObjecttesting:anotherClassCastException
>      >      >
>      >      > Try stepping through with these commands at command prompt or similar (you’ll have to use diff and cp from Ubuntu, now available on Windows or similar commands under DOS)
>      >      >
>      >      > $ cd /c/x3d-code/www.web3d.org/x3d/stylesheets/java/ <http://www.web3d.org/x3d/stylesheets/java/> <http://www.web3d.org/x3d/stylesheets/java/>
>      >      >
>      >      > $ javac -cp lib/javax.json-api-1.0.jar src/net/coderextreme/X3DJSONLD.java
>      >      >
>      >      > $ cp src/net/coderextreme/X3DJSONLD.class classes/net/coderextreme/
>      >      >
>      >      > $ jjs -cp "jars/X3DJSAIL.3.3.full.jar;classes" nashorn/examples/Json.js    # you may have to use the Java 8 way of specifying the classpath. See build.xml
>      >      >
>      >      > $ diff -w nashorn/examples/HelloWorldProgramOutput.Java.x3d nashorn/examples/Json.x3d
>      >      >
>      >      > 32a33,35
>      >      >
>      >      >  >         <meta name='translated' content='27 May 2018'/>
>      >      >
>      >      >  >         <meta name='generator' content='X3dToJson.xslt, http://www.web3d.org/x3d/stylesheets/X3dToJson.html'/>
>      >      >
>      >      >  >         <meta name='reference' content='X3D JSON encoding: http://www.web3d.org/wiki/index.php/X3D_JSON_Encoding'/>
>      >      >
>      >      > 35,38c38
>      >      >
>      >      > <         <ViewpointGroup description='Available viewpoints'>
>      >      >
>      >      > <             <Viewpoint DEF='DefaultView' description='Hello X3DJSAIL'/>
>      >      >
>      >      > <             <Viewpoint DEF='TopDownView' description='top-down view from above' orientation='1 0 0 -1.570796' position='0 100 0'/>
>      >      >
>      >      > <         </ViewpointGroup>
>      >      >
>      >      > ---
>      >      >
>      >      >  >         <ViewpointGroup description='Available viewpoints'/>
>      >      >
>      >      > You will see the missing Viewpoint’s (children of ViewpointGroup) as above.  Also jjs will generate significant output.
>      >      >
>      >      > I can’t connect through svn, so I may be out of date.
>      >      >
>      >      > John
>      >      >
>      >      > Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10
>      >      >
>      >      > *From: *Don Brutzman <mailto:brutzman at nps.edu <mailto:brutzman at nps.edu> <mailto:brutzman at nps.edu <mailto:brutzman at nps.edu>>>
>      >      > *Sent: *Wednesday, June 6, 2018 9:41 AM
>      >      > *To: *John Carlson <mailto:yottzumm at gmail.com <mailto:yottzumm at gmail.com> <mailto:yottzumm at gmail.com <mailto:yottzumm at gmail.com>>>
>      >      > *Cc: *x3d-public at web3d.org <mailto:x3d-public at web3d.org> <mailto:x3d-public at web3d.org <mailto:x3d-public at web3d.org>> <mailto:x3d-public at web3d.org <mailto:x3d-public at web3d.org> <mailto:x3d-public at web3d.org <mailto:x3d-public at web3d.org>>>
>      >      > *Subject: *Re: X3DJSAIL, X3dToJava.xslt and DOM X3DLoaderObject testing:anotherClassCastException
>      >      >
>      >      > 1. Hi John, finally getting back to this one.
>      >      >
>      >      > On 4/30/2018 3:15 PM, John Carlson wrote:
>      >      >
>      >      >  > Previously reported problem, now assigned to the X3DLoaderObject, I believe.
>      >      >
>      >      >  >
>      >      >
>      >      >  > No Viewpoint children in X3D or JSON output.
>      >      >
>      >      > Not sure what that means?  Viewpoint node typically does not have any children, except perhaps for a Metadata* node or an IS/connect.
>      >      >
>      >      >  > Is a problem with X3DLoaderObject, looks like another class cast exception.  X3DJSONLD was eliminated from the problem by printing out the DOM object, and verifying the Viewpoint objects were there.   See x3d-code/www.web3d.org/x3d/stylesheets/java/nashorn/examples/Quotes.js <http://www.web3d.org/x3d/stylesheets/java/nashorn/examples/Quotes.js> <http://www.web3d.org/x3d/stylesheets/java/nashorn/examples/Quotes.js>.
>      >      >
>      >      >  >
>      >      >
>      >      >  > Can be regenerated by running `ant test.nashorn` in x3d-code/www.web3d.org/x3d/stylesheets/java <http://www.web3d.org/x3d/stylesheets/java> <http://www.web3d.org/x3d/stylesheets/java>
>      >      >
>      >      >  >
>      >      >
>      >      >  > See output in nashorn/examples/Json.{json,x3d}
>      >      >
>      >      >  >
>      >      >
>      >      >  > John
>      >      >
>      >      > OK have recently updated to Java JDK 1.8.0_172 and adjusted PATH to confirm jjs is running OK.
>      >      >
>      >      > Have also synchronized X3DJSAIL sudirectory nashorn/ and contents with subversion.
>      >      >
>      >      > I get the following outputs when running test.nashorn build target:
>      >      >
>      >      > ============================================================
>      >      >
>      >      > ant -f E:\\x3d-code\\www.web3d.org <http://www.web3d.org> <http://www.web3d.org>\\x3d\\stylesheets\\java test.nashorn
>      >      >
>      >      > test.nashorn:
>      >      >
>      >      > ===========================================
>      >      >
>      >      > ant nashorn/build.xml test.nashorn
>      >      >
>      >      > X3D Nashorn SAI Library.test.nashorn:
>      >      >
>      >      > Compile:
>      >      >
>      >      > Compiling 1 source file to E:\x3d-code\www.web3d.org <http://www.web3d.org> <http://www.web3d.org>\x3d\stylesheets\java\classes
>      >      >
>      >      > Compiling 1 source file to E:\x3d-code\www.web3d.org <http://www.web3d.org> <http://www.web3d.org>\x3d\stylesheets\java\classes
>      >      >
>      >      > Copy:
>      >      >
>      >      > Copying 1 file to E:\x3d-code\www.web3d.org <http://www.web3d.org> <http://www.web3d.org>\x3d\stylesheets\java\nashorn\examples
>      >      >
>      >      > Copying E:\x3d-code\www.web3d.org <http://www.web3d.org> <http://www.web3d.org>\x3d\stylesheets\java\examples\HelloWorldProgramOutput.x3d to E:\x3d-code\www.web3d.org <http://www.web3d.org> <http://www.web3d.org>\x3d\stylesheets\java\nashorn\examples\HelloWorldProgramOutput.x3d
>      >      >
>      >      > Copying 1 file to E:\x3d-code\www.web3d.org <http://www.web3d.org> <http://www.web3d.org>\x3d\stylesheets\java\nashorn\examples
>      >      >
>      >      > Copying E:\x3d-code\www.web3d.org <http://www.web3d.org> <http://www.web3d.org>\x3d\stylesheets\java\examples\HelloWorldProgramOutput.json to E:\x3d-code\www.web3d.org <http://www.web3d.org> <http://www.web3d.org>\x3d\stylesheets\java\nashorn\examples\HelloWorldProgramOutput.json
>      >      >
>      >      > Run:
>      >      >
>      >      > parameter: source file HelloWorldProgramOutput.x3d filesize 20956 bytes, parsed using Document Object Model (DOM) X3DLoader
>      >      >
>      >      > parameter: "-tojs" for conversion to X3DJSONLD JavaScript source
>      >      >
>      >      > parameter: "-toFile" "nashorn/examples/HelloWorldProgramOutput.Nashorn.js" for result file name root nashorn/examples/HelloWorldProgramOutput.Nashorn
>      >      >
>      >      > convert to JS JavaScript:
>      >      >
>      >      > Warning: toFileJavaScript() is overwriting prior file nashorn/examples/HelloWorldProgramOutput.Nashorn.js
>      >      >
>      >      > Script DEF=colorTypeConversionScript contains CDATA source-code text, copied as "#sourceText" using "strings" mode
>      >      >
>      >      > Script DEF=MaterialModulatorScript contains CDATA source-code text, copied as "#sourceText" using "strings" mode
>      >      >
>      >      > TypeError: input.readAllBytes is not a function
>      >      >
>      >      > Error: Cannot read file [E:\x3d-code\www.web3d.org <http://www.web3d.org> <http://www.web3d.org>\x3d\stylesheets\java\nashorn\node_modules\xmldom\package.json]:
>      >      >
>      >      > [Error] TODO problem handling local exception within CommandLine, exiting
>      >      >
>      >      > org.web3d.x3d.sai.X3DException: ScriptException when processing fileName nashorn\examples\HelloWorldProgramOutput.Nashorn.js.intermediate.js, unable to save result: javax.script.ScriptException: Error: Cannot load JSON file in nashorn/jvm-npm.js at line number 216 at column number 8
>      >      >
>      >      >                  at org.web3d.x3d.jsail.Core.X3DObject.toFileJavaScript(X3DObject.java:1662)
>      >      >
>      >      >                  at org.web3d.x3d.jsail.CommandLine.run(CommandLine.java:628)
>      >      >
>      >      >                  at org.web3d.x3d.jsail.CommandLine.main(CommandLine.java:163)
>      >      >
>      >      > parameter: source file HelloWorldProgramOutput.x3d filesize 20956 bytes, parsed using Document Object Model (DOM) X3DLoader
>      >      >
>      >      > parameter: "-toJSON" for conversion to JSON encoding
>      >      >
>      >      > parameter: "-toFile" "nashorn/examples/HelloWorldProgramOutput.Java.json" for result file name root nashorn/examples/HelloWorldProgramOutput.Java
>      >      >
>      >      > convert to JSON:
>      >      >
>      >      > Warning: toFileStylesheetConversion(X3dToJson.xslt) is overwriting prior file nashorn/examples/HelloWorldProgramOutput.Java.json
>      >      >
>      >      > Script DEF=colorTypeConversionScript contains CDATA source-code text, copied as "#sourceText" using "strings" mode
>      >      >
>      >      > Script DEF=MaterialModulatorScript contains CDATA source-code text, copied as "#sourceText" using "strings" mode
>      >      >
>      >      > file conversion successful: HelloWorldProgramOutput.Java.json (39749 bytes)
>      >      >
>      >      > parameter: source file HelloWorldProgramOutput.x3d filesize 20956 bytes, parsed using Document Object Model (DOM) X3DLoader
>      >      >
>      >      > parameter: "-toX3D" for conversion to X3D encoding
>      >      >
>      >      > parameter: "-toFile" "nashorn/examples/HelloWorldProgramOutput.Java.x3d" for result file name root nashorn/examples/HelloWorldProgramOutput.Java
>      >      >
>      >      > convert to X3D:
>      >      >
>      >      > Warning: toFileX3D() is overwriting prior file nashorn/examples/HelloWorldProgramOutput.Java.x3d
>      >      >
>      >      > file conversion successful: HelloWorldProgramOutput.Java.x3d (20956 bytes)
>      >      >
>      >      > ===========================================
>      >      >
>      >      > ============================================================
>      >      >
>      >      > As you can see, the exception is in nashorn/jvm-npm.js:
>      >      >
>      >      >                  TypeError: input.readAllBytes is not a function
>      >      >
>      >      > Header in that file indicates that you have modified it.
>      >      >
>      >      > Specific javascript code block of interest:
>      >      >
>      >      >     function readFile (filename, core) {
>      >      >
>      >      >       var input;
>      >      >
>      >      >       try {
>      >      >
>      >      >         if (core) {
>      >      >
>      >      >           var classloader = java.lang.Thread.currentThread().getContextClassLoader();
>      >      >
>      >      >           input = classloader.getResourceAsStream(filename);
>      >      >
>      >      >         } else {
>      >      >
>      >      >                  input = new java.io.FileInputStream(filename);
>      >      >
>      >      >         }
>      >      >
>      >      >         return new java.lang.String(input.readAllBytes());
>      >      >
>      >      >       } catch (e) {
>      >      >
>      >      >         System.err.println(e);
>      >      >
>      >      >         throw new ModuleError('Cannot read file [' + filename + ']: ', 'IO_ERROR', e);
>      >      >
>      >      >       }
>      >      >
>      >      >     }
>      >      >
>      >      > JDK 8 Javadoc for java.io.FileInputStream does not provide a "readAllBytes()" method.  (Nor does JDK 1.9; however I am currently holding at 1.8 to stay compatible with Netbeans 8.)
>      >      >
>      >      > https://docs.oracle.com/javase/8/docs/api/java/io/FileInputStream.html
>      >      >
>      >      > So it looks like you need another method.
>      >      >
>      >      > A search for "java.io.FileInputStream readAllBytes" provides a number of hits.  For example:
>      >      >
>      >      >                  File to byte[] in Java
>      >      >
>      >      > https://stackoverflow.com/questions/858980/file-to-byte-in-java
>      >      >
>      >      > 2. Continuing with your prior error console also appears fruitful:
>      >      >
>      >      >  >       [exec] [X3DLoaderObject error] Incorrectly handled object construction, current elementObject=ViewpointGroup (ViewpointGroup), child=Viewpoint, java.lang.ClassCastException: org.web3d.x3d.jsail.Navigation.ViewpointGroupObject cannot be cast to org.web3d.x3d.sai.Grouping.X3DGroupingNode
>      >      >
>      >      >  >
>      >      >
>      >      >  >       [exec] java.lang.ClassCastException: org.web3d.x3d.jsail.Navigation.ViewpointGroupObject cannot be cast to org.web3d.x3d.sai.Grouping.X3DGroupingNode
>      >      >
>      >      >  >
>      >      >
>      >      >  >       [exec]     at org.web3d.x3d.jsail.X3DLoaderObject.toX3dObjectTree(X3DLoaderObject.java:1146)
>      >      >
>      >      >  >
>      >      >
>      >      >  >       [exec]     at org.web3d.x3d.jsail.X3DLoaderObject.toX3dObjectTree(X3DLoaderObject.java:542)
>      >      >
>      >      >  >
>      >      >
>      >      >  >       [exec]     at org.web3d.x3d.jsail.X3DLoaderObject.toX3dObjectTree(X3DLoaderObject.java:542)
>      >      >
>      >      >  >
>      >      >
>      >      >  >       [exec]     at org.web3d.x3d.jsail.X3DLoaderObject.toX3dObjectTree(X3DLoaderObject.java:430)
>      >      >
>      >      >  >
>      >      >
>      >      >  >       [exec]     at org.web3d.x3d.jsail.X3DLoaderObject.toX3dObjectTree(X3DLoaderObject.java:399)
>      >      >
>      >      >  >
>      >      >
>      >      >  >       [exec]     at jdk.scripting.nashorn.scripts/jdk.nashorn.internal.scripts.Script$Recompilation$372$Json$cu1$restOf.:program(nashorn/examples/Json.js:15)
>      >      >
>      >      >  >
>      >      >
>      >      >  >       [exec]     at jdk.scripting.nashorn/jdk.nashorn.internal.runtime.ScriptFunctionData.invoke(ScriptFunctionData.java:655)
>      >      >
>      >      >  >
>      >      >
>      >      >  >       [exec]     at jdk.scripting.nashorn/jdk.nashorn.internal.runtime.ScriptFunction.invoke(ScriptFunction.java:513)
>      >      >
>      >      >  >
>      >      >
>      >      >  >       [exec]     at jdk.scripting.nashorn/jdk.nashorn.internal.runtime.ScriptRuntime.apply(ScriptRuntime.java:527)
>      >      >
>      >      >  >
>      >      >
>      >      >  >       [exec]     at jdk.scripting.nashorn/jdk.nashorn.tools.Shell.apply(Shell.java:519)
>      >      >
>      >      >  >
>      >      >
>      >      >  >       [exec]     at jdk.scripting.nashorn/jdk.nashorn.tools.Shell.runScripts(Shell.java:448)
>      >      >
>      >      >  >
>      >      >
>      >      >  >       [exec]     at jdk.scripting.nashorn/jdk.nashorn.tools.Shell.run(Shell.java:186)
>      >      >
>      >      >  >
>      >      >
>      >      >  >       [exec]     at jdk.scripting.nashorn.shell/jdk.nashorn.tools.jjs.Main.main(Main.java:104)
>      >      >
>      >      >  >
>      >      >
>      >      >  >       [exec]     at jdk.scripting.nashorn.shell/jdk.nashorn.tools.jjs.Main.main(Main.java:80)
>      >      >
>      >      > Looks like it was trying to treat ViewpointGroup like a X3DGroupingNode - but it is not.  ViewpointGroup is not a X3DGroupingNode node, and can only contain a Metadata* node, Viewpoint/OrthoViewpoint/GeoViewpoint and other ViewpointGroup nodes.
>      >      >
>      >      > This might have been fixed already as part of the many DOM loader improvements performed; not seeing that error in my console.  Worth retesting if you can address the readAllBytes issue.
>      >      >
>      >      > I've added a warning to X3D tooltips to clarify that.
>      >      >
>      >      > Hope next round of improvement/testing can sort this one out fully.
>      >      >
>      >      > all the best, Don
>      >      >
>      >      > --
>      >      >
>      >      > Don Brutzman  Naval Postgraduate School, Code USW/Br brutzman at nps.edu <mailto:brutzman at nps.edu> <mailto:brutzman at nps.edu <mailto:brutzman at nps.edu>>
>      >      >
>      >      > Watkins 270,  MOVES Institute, Monterey CA 93943-5000 USA   +1.831.656.2149
>      >      >
>      >      > X3D graphics, virtual worlds, navy robotics http://faculty.nps.edu/brutzman
>      >      >
>      >
>      >
>      >     all the best, Don
>      >     --
>      >     Don Brutzman  Naval Postgraduate School, Code USW/Br brutzman at nps.edu <mailto:brutzman at nps.edu> <mailto:brutzman at nps.edu <mailto:brutzman at nps.edu>>
>      >     Watkins 270,  MOVES Institute, Monterey CA 93943-5000 USA   +1.831.656.2149
>      >     X3D graphics, virtual worlds, navy robotics http://faculty.nps.edu/brutzman
>      >
> 
> 
>     all the best, Don
>     -- 
>     Don Brutzman  Naval Postgraduate School, Code USW/Br brutzman at nps.edu <mailto:brutzman at nps.edu>
>     Watkins 270,  MOVES Institute, Monterey CA 93943-5000 USA   +1.831.656.2149
>     X3D graphics, virtual worlds, navy robotics http://faculty.nps.edu/brutzman
> 


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 http://faculty.nps.edu/brutzman




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