Compiling with reference to internal scripting implementation (NativeArray)

Question

I'm interpreting a snippet of JavaScript and getting an object back, but in some cases the object returned is an array. If I ask the returned object for its class I get:
sun.org.mozilla.javascript.internal.NativeArraySounds great, so in the case of an array I want to copy its members to a normal Java array with something like this:
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.ScriptException;
import sun.org.mozilla.javascript.internal.NativeArray;
public class EvalScript
    public static void main( String ... args )
        throws ScriptException
        ScriptEngineManager manager = new ScriptEngineManager();
        ScriptEngine engine = manager.getEngineByName( "js" );
        String snippet = args[0];
        Object rv = engine.eval( snippet );
        if ( rv instanceof NativeArray ) {
            NativeArray jsArray = (NativeArray)rv;
            int numItems = (int)jsArray.getLength();
            Object[] javaArray = new Object[ numItems ];
            for ( int i = 0; i < numItems; i++ ) {
                javaArray[i] = jsArray.get( i, null );
}On compiling it with the latest 1.6 release like:
javac EvalScript.javaI get the output:
EvalScript.java:4: package sun.org.mozilla.javascript.internal does not exist
import sun.org.mozilla.javascript.internal.NativeArray;
                                          ^
EvalScript.java:14: cannot find symbol
symbol  : class NativeArray
location: class EvalScript
        if ( rv instanceof NativeArray ) {
                           ^
EvalScript.java:15: cannot find symbol
symbol  : class NativeArray
location: class EvalScript
            NativeArray jsArray = (NativeArray)rv;
            ^
EvalScript.java:15: cannot find symbol
symbol  : class NativeArray
location: class EvalScript
            NativeArray jsArray = (NativeArray)rv;
                                   ^
4 errorsThe NativeArray class is definitely in the rt.jar:
jar -tvf \work\JDK\1.6.0_02\jre\lib\rt.jar | grep NativeArray 18217 Thu Jul 12 01:46:44 EDT 2007 sun/org/mozilla/javascript/internal/NativeArray.classSo is there some magic I need to invoke to have access to non 'java.' classes, or do I just need to use reflection, or...?

Answer 1

Just typed in this editor - so no syntax-check but you will get the idea:
Pass the internal table and get the reference of it
Store the reference and manipulate the global contents with local field-symbols to which you have assigned the reference.
Hope this helps
Christian
>
> class myObject definition.
> *
>   public section.
> *
>     methods:
>       set_global_table
> importing reference(i_table) type standard
> standard table,
> *
>       change_global_table.
> *
>   private section.
> *
>     data:
> m_pointer_to_table type ref to data
> *
> endclass.
> *
> class myObject implementation.
> *
>   method set_global_table.
> *
     GET REFERENCE of i_table into m_pointer_to_table.
>   endmethod.
> *
> *
>   method change_global_table.
> *
  field-symbols: <lit_table> type any table.
    assign m_pointer_to_table to <lit_table>.
* manipulate <lit_table>
>   endmethod.
> *
> endclass.
> *
> *
> data: gt_itable   type standard table of t_widget,
>       go_myobject type ref to myobject.
> *
> * Main code
> *
>   create object go_myobject.
> *
> *
> *
> * phantom code fills gt_itable
> *
> *
>   call method go_myobject->set_global_table
>                 exporting i_table = gt_itable.
> *
>   call method go_myobject->change_global_table.
> *
> *
>   if gt_itable is initial.
> *
>      write 'this should output'.
> *
>   endif.
>
>
> The code here doesn't work and I've tried messing
> with field-symbols, etc. all to no avail. Thank you
> for any help you could provide!
>
> Brett