161266 - java.lang.UnsatisfiedLinkError: getBrowserType in External Authering Interface (EAI)

Status: RESOLVED EXPIRED

(Core Graveyard :: Java: OJI, defect)

Description

[Hendri Hondorp]

From Bugzilla Helper:
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.1a) Gecko/20020611
BuildID:    2002061104

Using Cosmoplayer 2.1.1 as plugin for VRML in Mozilla 1.x
and Netscape 6.x

My Java Plugin is:
   Java(TM) Plug-in: Version 1.4.0_01
   Using JRE version 1.4.0_01-ea Java HotSpot(TM) Client VM

I always get the following error.
java.lang.UnsatisfiedLinkError: getBrowserType	
	at vrml.cosmo.Browser.getBrowserType(Native Method) 	
	at vrml.external.Browser.getBrowser(Browser.java) 	
	at vrml.external.Browser.getBrowser(Browser.java)

In java file Browser.getBrowser()  is called to contact the
VRML-plugin with JVM using LiveConnect.

In Netscape 3.x and 4.x and Internet Explorer this is done
by EAI (External Authoring Interface) to connect Java VM
with the VRML world, so events can be thrown and catched
from this VRML world and the VR world can be changed on runtime.

It is not a bug in Cosmoplayer because other Plugins (Cortona for
example, http://www.parallelgraphics.com) do have the same problem.


Reproducible: Always
Steps to Reproduce:
1. install CosmoPlayer as VRML-Plugin
2. install Java Plugin
3. Load URL mentioned above and see the linkage error.

Actual Results:  I get an linkage error in the Java Console:
  java.lang.UnsatisfiedLinkError: getBrowserType	
	at vrml.cosmo.Browser.getBrowserType(Native Method) 	
	at vrml.external.Browser.getBrowser(Browser.java) 	
	at vrml.external.Browser.getBrowser(Browser.java)

Because the Java program can't make a connection to the VR world
a 'dead' VR world appears. No communication between Java and VR-plugin
is possible.

Expected Results:  Return a 'pointer' to the Browser Component which is able to use
the getBrowserType.

The other way to make a Browser connection using LiveConnect is using
JSObject:
class myApplet extends Applet {
...
JSObject win = JSObject.getWindow(this);
JSObject emb = (JSObject) win.getMember("embeds");
Browser browser = (Browser) emb.getSlot(0);
}

This is alos not working. The getSlot call returns an Exception.
Also this code is Browser depended (because JSObject is Netscape code)
and not preferable.

Comment 1

[Kai Lahmann (is there, where MNG is)]

the Plugin API has changed and LiveConnect doesn't exist any more. I'm not
shure, if the Cosmo Plugin is aware or this...

Comment 2

[Phil Schwartau]

Reassigning to OJI, particulary for the reporter's last remark:

> The other way to make a Browser connection using LiveConnect
> is using JSObject:

> class myApplet extends Applet {
> ...
>   JSObject win = JSObject.getWindow(this);
>   JSObject emb = (JSObject) win.getMember("embeds");
>   Browser browser = (Browser) emb.getSlot(0);
> }

> This is also not working. The getSlot call returns an Exception.
> Also this code is Browser depended (because JSObject is Netscape code)
> and not preferable.


That applet code should work, shouldn't it?

Comment 3

[Hendri Hondorp]

No.
There is a ClassCastException: sun.plugin.navig5.JSObject
As Attchements a give you three files:
- test.wrl
- test.html
- Test.java
The wrl is a very little VRML file. The html file starts the VRML plugin
and the Java Class file. Inside the Java file is uncommented code which
gives the Browser.getBrowser() error.

Comment 4

[Hendri Hondorp]

Attachment: Test file to start up VRML plugin and Java Class file

Comment 5

[Hendri Hondorp]

Attachment: Simple vrml file

Comment 6

[Hendri Hondorp]

Attachment: Simple Java file

Please compile with javaws.jar

Comment 7

[Joe Chou]

Reporter, could you try this on a more recent build of mozilla (1.1, 1.2 etc.)
and JRE (1.4.1rc, available for downloading from java.sun.com/j2se), and see
what happens?

Comment 8

[Hendri Hondorp]

I've tried your suggestion. Same errors.
Mozilla 1.2a
Java 1.4.1.

Comment 9

[Jan Truyens]

Mozilla also does not respond correctly to the ASP command:
client=Server.CreateObject("MSWC.BrowserType"), must be the same problem, I guess.
client.browser returns: Default
client.cookies returns: false (and that just can't be true!)

using IIS 5.1 on WinXP
using Mozilla 1.3 on WinXP and on Win98

Comment 10

[Gervase Markham [:gerv]]

This is an automated message, with ID "auto-resolve01".

This bug has had no comments for a long time. Statistically, we have found that
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Comment 11

[Gervase Markham [:gerv]]

This bug has been automatically resolved after a period of inactivity (see above
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