tcljava-user

[tcljava-user] Using Tcl Blend with NASA WorldWind Java SDK

[<Dan...@dl...>]

Hi,
=20
I'm trying to use Tcl Blend together with the NASA WorldWind Java (WWJ) =
SDK, i.e. creating WWJ objects from Tcl, accessing their fields, =
invoking their methods, etc. [WWJ uses JOGL for the visualization of a =
virtual globe (analogous to Google Earth)]
=20
I have been able to create JOGL objects from Tcl, such as GLCanvas, =
GLJPanel, and some WWJ objects such as IconLayer, =
EarthNASAPlaceNameLayer, etc. but I have not been able to create some =
WWJ objects, in particular WorldWindowGLCanvas and WorldWindowGLJPanel.
=20
Specifically, I get the following error message when trying to create a =
WorldWindowGLCanvas object from jtclsh:
=20
 medina@onyx:/opt/tclblend/bin> ./jtclsh
 % package require java
 1.4.0
 % java::call System getProperty "java.version"
 1.5.0_06
 % java::new javax.swing.JFrame
 java0x1
 % java::new javax.media.opengl.GLCanvas
 java0x2
 % java::new gov.nasa.worldwind.layers.IconLayer
 java0x3
 % java::new gov.nasa.worldwind.layers.Earth.EarthNASAPlaceNameLayer
 java0x4
 % java::new gov.nasa.worldwind.awt.AWTInputHandler
 java0x5
 % java::new gov.nasa.worldwind.awt.WorldWindowGLCanvas
 java.lang.ExceptionInInitializerError
 %
=20
 I would appreciate it if anyone could provide some help on this.
=20
 Thanks in advance!
 Daniel

Re: [tcljava-user] Using Tcl Blend with NASA WorldWind Java SDK

[Patrick F. <pfi...@oz...>]

On Wednesday 23 May 2007 18:33, Dan...@dl... wrote:

>  % java::call System getProperty "java.version"
>  1.5.0_06

AFAIK Tclblend supports <= java 1.4.x. 

Re: [tcljava-user] Using Tcl Blend with NASA WorldWind Java SDK

[Mo D. <mo...@mo...>]

Dan...@dl... wrote:
> Hi,
>   
> Specifically, I get the following error message when trying to create a WorldWindowGLCanvas object from jtclsh:
>  
>  medina@onyx:/opt/tclblend/bin> ./jtclsh
>  % package require java
>  1.4.0
>  % java::call System getProperty "java.version"
>  1.5.0_06
>   

Tcl Blend should work find with JDK 1.5.

>  % java::new javax.swing.JFrame
>  java0x1
>  % java::new javax.media.opengl.GLCanvas
>  java0x2
>  % java::new gov.nasa.worldwind.layers.IconLayer
>  java0x3
>  % java::new gov.nasa.worldwind.layers.Earth.EarthNASAPlaceNameLayer
>  java0x4
>  % java::new gov.nasa.worldwind.awt.AWTInputHandler
>  java0x5
>  % java::new gov.nasa.worldwind.awt.WorldWindowGLCanvas
>  java.lang.ExceptionInInitializerError
>   
This is a generic Java error that indicates an exception was raised 
while loading the class or invoking the
static init method for the class. You will have to look at the class in 
question to find out why. If this package
uses native code then it could fail because it does not find needed DLL 
on the PATH.

I hope that helps
Mo

Re: [tcljava-user] Using Tcl Blend with NASA WorldWind Java SDK

[<Dan...@dl...>]

Hi again,

first of all, thank you for your quick reply!

I haven't yet been able to figure out why I'm getting this =
java.lang.ExceptionInInitializerError, but here's what I get when =
running jtclsh with the -verbose:class option.



medina@medina:/opt/tclblend/bin> ./jtclsh
% set tclblend_init -verbose:class
-verbose:class
% package require java
[...]
1.4.0
% java::new gov.nasa.worldwind.awt.WorldWindowGLCanvas
[...]
[Loaded javax.media.opengl.GLEventListener from tcl.lang.TclClassLoader]
[Loaded gov.nasa.worldwind.AVList from tcl.lang.TclClassLoader]
[Loaded gov.nasa.worldwind.WWObject from tcl.lang.TclClassLoader]
[Loaded gov.nasa.worldwind.AVListImpl from tcl.lang.TclClassLoader]
[Loaded gov.nasa.worldwind.WWObjectImpl from tcl.lang.TclClassLoader]
[Loaded gov.nasa.worldwind.WorldWindowImpl from tcl.lang.TclClassLoader]
[Loaded gov.nasa.worldwind.WorldWindowGLAutoDrawable from =
tcl.lang.TclClassLoader]
[Loaded gov.nasa.worldwind.SceneController from tcl.lang.TclClassLoader]
[Loaded gov.nasa.worldwind.WorldWind from tcl.lang.TclClassLoader]
[Loaded gov.nasa.worldwind.RetrievalService from =
tcl.lang.TclClassLoader]
[Loaded gov.nasa.worldwind.ThreadedTaskService from =
tcl.lang.TclClassLoader]
[Loaded java.lang.ExceptionInInitializerError from =
/usr/lib/jvm/java-1.5.0-sun-1.5.0_06/jre/lib/rt.jar]
[Loaded tcl.lang.ReflectObject from =
file:/opt/tclblend/lib/tcljava1.4.0/tcljava.jar]
[Loaded tcl.lang.ArrayObject from =
file:/opt/tclblend/lib/tcljava1.4.0/tcljava.jar]
[Loaded tcl.lang.JavaInfoCmd from =
file:/opt/tclblend/lib/tcljava1.4.0/tcljava.jar]
[Loaded java.beans.IntrospectionException from =
/usr/lib/jvm/java-1.5.0-sun-1.5.0_06/jre/lib/rt.jar]
java.lang.ExceptionInInitializerError
%



There seems to be something wrong with the =
gov.nasa.worldwind.ThreadedTaskService class, right? Or is it when =
trying to load the next class that the error occurs? In this case, how =
can I find out which class it's trying to load after it has successfully =
loaded the ThreadedTaskService class?

Also, running jtclsh with the -verbose:jni option yields this result:



medina@medina:/opt/tclblend/bin> ./jtclsh
% set tclblend_init -verbose:jni
-verbose:jni
% package require java
[...]
1.4.0
% java::new gov.nasa.worldwind.awt.WorldWindowGLCanvas
[...]
[Dynamic-linking native method =
sun.reflect.NativeMethodAccessorImpl.invoke0 ... JNI]
[Dynamic-linking native method =
com.sun.opengl.impl.x11.GLX.glXChooseVisual1 ... JNI]
[Dynamic-linking native method =
com.sun.opengl.impl.x11.GLX.XGetVisualInfo1 ... JNI]
[Dynamic-linking native method com.sun.opengl.impl.x11.GLX.glXGetConfig1 =
... JNI]
[Dynamic-linking native method sun.awt.X11GraphicsDevice.getNumConfigs =
... JNI]     //here it stays for a while, before continuing
[Dynamic-linking native method tcl.lang.CObject.newCObject ... JNI]
[Dynamic-linking native method tcl.lang.CObject.incrRefCount ... JNI]
[Dynamic-linking native method tcl.lang.TclList.append ... JNI]
[Dynamic-linking native method tcl.lang.Interp.setErrorCode ... JNI]
[Dynamic-linking native method tcl.lang.CObject.decrRefCount ... JNI]
[Dynamic-linking native method tcl.lang.Interp.setResult ... JNI]
java.lang.ExceptionInInitializerError
%





I also tried to create an instance of another class, =
gov.nasa.worldwind.awt.WorldWindowGLJPanel, and got a similar result:


With -verbose:class option:



medina@medina:/opt/tclblend/bin> ./jtclsh
% set tclblend_init -verbose:class
-verbose:class
% package require java
[...]
1.4.0
% java::new gov.nasa.worldwind.awt.WorldWindowGLJPanel
[...]
[Loaded gov.nasa.worldwind.AVListImpl from tcl.lang.TclClassLoader]
[Loaded gov.nasa.worldwind.WWObjectImpl from tcl.lang.TclClassLoader]
[Loaded gov.nasa.worldwind.WorldWindowImpl from tcl.lang.TclClassLoader]
[Loaded gov.nasa.worldwind.WorldWindowGLAutoDrawable from =
tcl.lang.TclClassLoader]
[Loaded gov.nasa.worldwind.SceneController from tcl.lang.TclClassLoader]
[Loaded gov.nasa.worldwind.WorldWind from tcl.lang.TclClassLoader]
[Loaded gov.nasa.worldwind.RetrievalService from =
tcl.lang.TclClassLoader]
[Loaded gov.nasa.worldwind.ThreadedTaskService from =
tcl.lang.TclClassLoader]
[Loaded java.lang.ExceptionInInitializerError from =
/usr/lib/jvm/java-1.5.0-sun-1.5.0_06/jre/lib/rt.jar]
[Loaded tcl.lang.ReflectObject from =
file:/opt/tclblend/lib/tcljava1.4.0/tcljava.jar]
[Loaded tcl.lang.ArrayObject from =
file:/opt/tclblend/lib/tcljava1.4.0/tcljava.jar]
[Loaded tcl.lang.JavaInfoCmd from =
file:/opt/tclblend/lib/tcljava1.4.0/tcljava.jar]
[Loaded java.beans.IntrospectionException from =
/usr/lib/jvm/java-1.5.0-sun-1.5.0_06/jre/lib/rt.jar]
java.lang.ExceptionInInitializerError
%





With -verbose:jni option:



medina@medina:/opt/tclblend/bin> ./jtclsh
% set tclblend_init -verbose:jni
-verbose:jni
% package require java
[...]
1.4.0
% java::new gov.nasa.worldwind.awt.WorldWindowGLJPanel
[...]
[Dynamic-linking native method java.lang.StrictMath.floor ... JNI]
[Dynamic-linking native method java.awt.KeyboardFocusManager.initIDs ... =
JNI]
[Dynamic-linking native method sun.awt.X11.XlibWrapper.XEventsQueued ... =
JNI]
[Dynamic-linking native method sun.awt.X11.XToolkit.waitForEvents ... =
JNI]
[Dynamic-linking native method java.lang.Class.isInstance ... JNI]
[Dynamic-linking native method =
sun.reflect.NativeMethodAccessorImpl.invoke0 ... JNI]
[Dynamic-linking native method java.awt.Rectangle.initIDs ... JNI]     =
//here it stays for a while, before continuing
[Dynamic-linking native method tcl.lang.CObject.newCObject ... JNI]
[Dynamic-linking native method tcl.lang.CObject.incrRefCount ... JNI]
[Dynamic-linking native method tcl.lang.TclList.append ... JNI]
[Dynamic-linking native method tcl.lang.Interp.setErrorCode ... JNI]
[Dynamic-linking native method tcl.lang.CObject.decrRefCount ... JNI]
[Dynamic-linking native method tcl.lang.Interp.setResult ... JNI]
java.lang.ExceptionInInitializerError
%=20





Just in case, the contents of the ThreadedTaskService.java file are as =
follows:




---------------------------------------
---------------------------------------
---------------------------------------




/*
Copyright (C) 2001, 2006 United States Government
as represented by the Administrator of the
National Aeronautics and Space Administration.
All Rights Reserved.
*/
package gov.nasa.worldwind;

/**
 * @author Tom Gaskins
 * @version $Id: ThreadedTaskService.java 1792 2007-05-08 21:28:37Z =
tgaskins $
 */
public class ThreadedTaskService extends WWObjectImpl // TODO: Extract =
interface
    implements Thread.UncaughtExceptionHandler
{
    static final private int DEFAULT_CORE_POOL_SIZE =3D 1;
    static final private int DEFAULT_QUEUE_SIZE =3D 10;
    private static final String RUNNING_THREAD_NAME_PREFIX =3D =
WorldWind.retrieveMessage(
        "ThreadedTaskService.RUNNING_THREAD_NAME_PREFIX", =
"ThreadStrings");
    private static final String IDLE_THREAD_NAME_PREFIX =3D =
WorldWind.retrieveMessage(
        "ThreadedTaskService.IDLE_THREAD_NAME_PREFIX", "ThreadStrings");
    private java.util.concurrent.ConcurrentLinkedQueue<Runnable> =
activeTasks; // tasks currently allocated a thread
    private TaskExecutor executor; // thread pool for running retrievers

    public ThreadedTaskService()
    {
        Integer poolSize =3D =
Configuration.getIntegerValue(AVKey.THREADED_TASK_POOL_SIZE, =
DEFAULT_CORE_POOL_SIZE);
        Integer queueSize =3D =
Configuration.getIntegerValue(AVKey.THREADED_TASK_QUEUE_SIZE, =
DEFAULT_QUEUE_SIZE);

        // this.executor runs the tasks, each in their own thread
        this.executor =3D new TaskExecutor(poolSize, queueSize);

        // this.activeTasks holds the list of currently executing tasks
        this.activeTasks =3D new =
java.util.concurrent.ConcurrentLinkedQueue<Runnable>();
    }

    public void uncaughtException(Thread thread, Throwable throwable)
    {
        if (throwable instanceof WWDuplicateRequestException)
            return;

        String message =3D =
WorldWind.retrieveErrMsg("ThreadedTaskService.UncaughtExceptionDuringTask=
") + thread.getName();
        WorldWind.logger().log(java.util.logging.Level.FINE, message);
        =
Thread.currentThread().getThreadGroup().uncaughtException(thread, =
throwable);
    }

    private class TaskExecutor extends =
java.util.concurrent.ThreadPoolExecutor
    {
        private static final long THREAD_TIMEOUT =3D 2; // keep idle =
threads alive this many seconds

        private TaskExecutor(int poolSize, int queueSize)
        {
            super(poolSize, poolSize, THREAD_TIMEOUT, =
java.util.concurrent.TimeUnit.SECONDS,
                new =
java.util.concurrent.ArrayBlockingQueue<Runnable>(queueSize),
                new java.util.concurrent.ThreadFactory()
                {
                    public Thread newThread(Runnable runnable)
                    {
                        Thread thread =3D new Thread(runnable);
                        thread.setDaemon(true);
                        thread.setPriority(Thread.MIN_PRIORITY);
                        =
thread.setUncaughtExceptionHandler(ThreadedTaskService.this);
                        return thread;
                    }
                }, new =
java.util.concurrent.ThreadPoolExecutor.DiscardPolicy() // abandon task =
when queue is full
            {
                public void rejectedExecution(Runnable runnable,
                    java.util.concurrent.ThreadPoolExecutor =
threadPoolExecutor)
                {
                    // Interposes logging for rejected execution
                    String message =3D =
WorldWind.retrieveErrMsg("ThreadedTaskService.ResourceRejected") + =
runnable;
                    =
WorldWind.logger().log(java.util.logging.Level.FINEST, message);
                    super.rejectedExecution(runnable, =
threadPoolExecutor);
                }
            });
        }

        protected void beforeExecute(Thread thread, Runnable runnable)
        {
            WorldWind.logger().log(java.util.logging.Level.FINEST, =
WorldWind.retrieveErrMsg(
                "ThreadedTaskService.EnteringBeforeExecute"));

            if (thread =3D=3D null)
            {
                String msg =3D =
WorldWind.retrieveErrMsg("nullValue.ThreadIsNull");
                WorldWind.logger().log(java.util.logging.Level.FINE, =
msg);
                throw new IllegalArgumentException(msg);
            }

            if (runnable =3D=3D null)
            {
                String msg =3D =
WorldWind.retrieveErrMsg("nullValue.RunnableIsNull");
                WorldWind.logger().log(java.util.logging.Level.FINE, =
msg);
                throw new IllegalArgumentException(msg);
            }

            if (ThreadedTaskService.this.activeTasks.contains(runnable))
            {
                String message =3D =
WorldWind.retrieveErrMsg("ThreadedTaskService.CancellingDuplicateTask") =
+ runnable;
                WorldWind.logger().log(java.util.logging.Level.FINER, =
message);
                throw new WWDuplicateRequestException(message);
            }

            ThreadedTaskService.this.activeTasks.add(runnable);

            if (RUNNING_THREAD_NAME_PREFIX !=3D null)
                thread.setName(RUNNING_THREAD_NAME_PREFIX + runnable);
            thread.setPriority(Thread.MIN_PRIORITY);
            =
thread.setUncaughtExceptionHandler(ThreadedTaskService.this);

            super.beforeExecute(thread, runnable);

            WorldWind.logger().log(java.util.logging.Level.FINEST, =
WorldWind.retrieveErrMsg(
                "ThreadedTaskService.LeavingBeforeExecute"));
        }

        protected void afterExecute(Runnable runnable, Throwable =
throwable)
        {
            WorldWind.logger().log(java.util.logging.Level.FINEST, =
WorldWind.retrieveErrMsg(
                "ThreadedTaskService.EnteringAfterExecute"));

            if (runnable =3D=3D null)
            {
                String msg =3D =
WorldWind.retrieveErrMsg("nullValue.RunnableIsNull");
                WorldWind.logger().log(java.util.logging.Level.FINE, =
msg);
                throw new IllegalArgumentException(msg);
            }

            super.afterExecute(runnable, throwable);

            ThreadedTaskService.this.activeTasks.remove(runnable);

            if (throwable =3D=3D null && IDLE_THREAD_NAME_PREFIX !=3D =
null)
                Thread.currentThread().setName(IDLE_THREAD_NAME_PREFIX);
        }
    }

    public synchronized boolean contains(Runnable runnable)
    {
        //noinspection SimplifiableIfStatement
        if (runnable =3D=3D null)
            return false;

        return (this.activeTasks.contains(runnable) || =
this.executor.getQueue().contains(runnable));
    }

    /**
     * Enqueues a task to run.
     * @param runnable the task to add
     * @throws IllegalArgumentException if <code>runnable</code> is null
     */
    public synchronized void addTask(Runnable runnable)
    {
        if (runnable =3D=3D null)
        {
            String message =3D =
WorldWind.retrieveErrMsg("nullValue.RunnableIsNull");
            WorldWind.logger().log(java.util.logging.Level.FINE, =
message);
            throw new IllegalArgumentException(message);
        }

        // Do not queue duplicates.
        if (this.activeTasks.contains(runnable) || =
this.executor.getQueue().contains(runnable))
            return;

        this.executor.execute(runnable);
    }

    public boolean isFull()
    {
        return this.executor.getQueue().remainingCapacity() =3D=3D 0;
    }
}






---------------------------------------
---------------------------------------
---------------------------------------






I really would be very grateful if you could help me with this.

Kind regards,
Daniel Medina




-----Original Message-----
From: tcl...@li... on behalf of Mo DeJong
Sent: Wed 5/23/2007 9:46 PM
To: A list for users of tcljava
Subject: Re: [tcljava-user] Using Tcl Blend with NASA WorldWind Java SDK
=20
Dan...@dl... wrote:
> Hi,
>  =20
> Specifically, I get the following error message when trying to create =
a WorldWindowGLCanvas object from jtclsh:
> =20
>  medina@onyx:/opt/tclblend/bin> ./jtclsh
>  % package require java
>  1.4.0
>  % java::call System getProperty "java.version"
>  1.5.0_06
>  =20

Tcl Blend should work find with JDK 1.5.

>  % java::new javax.swing.JFrame
>  java0x1
>  % java::new javax.media.opengl.GLCanvas
>  java0x2
>  % java::new gov.nasa.worldwind.layers.IconLayer
>  java0x3
>  % java::new gov.nasa.worldwind.layers.Earth.EarthNASAPlaceNameLayer
>  java0x4
>  % java::new gov.nasa.worldwind.awt.AWTInputHandler
>  java0x5
>  % java::new gov.nasa.worldwind.awt.WorldWindowGLCanvas
>  java.lang.ExceptionInInitializerError
>  =20
This is a generic Java error that indicates an exception was raised=20
while loading the class or invoking the
static init method for the class. You will have to look at the class in=20
question to find out why. If this package
uses native code then it could fail because it does not find needed DLL=20
on the PATH.

I hope that helps
Mo


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