Subj : Linking in a JS library
To   : netscape.public.mozilla.jseng
From : ongewenste_email
Date : Tue Oct 19 2004 03:04 am

Hi all,

I'm trying to link in a javascript library using Rhino. I have a main
script A, which needs to import library B. What I've done is create a
java Import class, which looks something like this :

public class JSImport {
    // the library 
    private static String m_Script = "function
b(){Packages.java.lang.System.out.println("Hello B");}";
    // do the import 
    public static void doImport() throws Exception{
        Context ctx = Context.enter();
        ctx.setCompileFunctionsWithDynamicScope(true);
        ScriptableObject scope = new ImporterTopLevel(ctx);
        Script script = ctx.compileString(ScriptCompileTest.lib,
"lib", 0,null);
        script.exec(ctx, scope);
        ctx.exit();
    }
}

Now from some script A I import B : 

// invoke the import
Packages.tools.JSImport.doImport();
// run the code.
a();
function a(){
    Packages.java.lang.System.out.println("Hello A");
}
b();


The problem is that the calling thread's scope doesn't see the
library, which makes sense since I use a threadLocal scope in the
calling script:

        ScriptableObject scope = ctx.initStandardObjects(null, false);
        Scriptable threadScope = new ImporterTopLevel(ctx);
        threadScope.setPrototype(scope);
        m_CompiledScript.exec(ctx, threadScope);

If I make the threadScope object accessible to JSImport , it works
fine, but I don't like that. So my question is, is there a way I can
get to the active scope object using Rhino's API, or is there a
different way altogether to achieve this import functionality in
javascript ?

cheers,
Edwin.

.