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From: Assia Alexandrova <kobrix@gmail.com>
Date: Mon, 22 May 2017 00:53:20 -0400
Message-ID: <CAAfv3F2gGNOmg4mM2Y9enfOfMbLX0yOTe9ufUB6RNqMdBVuOdQ@mail.gmail.com>
Subject: JSR 223 support behavior
To: users@groovy.apache.org
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archived-at: Mon, 22 May 2017 04:53:31 -0000

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Hi all,

My first time here. I wasn't sure weather to post this to dev list, so
please let me know if I should!

I'm trying to hook the latest Groovy interpreter to a JVM scripting
notebook environment (https://github.com/bolerio/seco). At a minimum I need
good JSR 223 support so that symbols/variables can be shared between
scripting languages. With Groovy and its built-in JSR 223 support, it seems
like an assignment:

something = 10

is placed into the common scripting context, but not a definition like this:

def something = 10

Here is a sample program reproducing the issue:

import javax.script.*;
import org.codehaus.groovy.jsr223.*;

public class TestMe
{

  public static void main(String[] args)
  {
    ScriptEngine engine = (ScriptEngine) new
GroovyScriptEngineFactory().getScriptEngine();

    try
    {
      String decl = "def something = 10";
      String stmt = "println something";
      engine.eval(decl);
      engine.eval(stmt);
    }
    catch (Exception e)
    {
      e.printStackTrace();
    }
  }
}

This yields an error: Caused by: groovy.lang.MissingPropertyException: No
such property: something for class: Script2

I played with GroovyShell a bit, passing in my own groovy.lang.Binding
implementation and indeed whenever there is a "def name = value", the
binding setVariable or setProperty are not called.

Is this a bug? If not, is there a way to get access to those symbols
introduced via 'def'. Disclaimer: I'm not a Groovy programmer, just trying
to learn enough to make this work.

Regards

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<div dir=3D"ltr">Hi all,<div><br></div><div>My first time here. I wasn&#39;=
t sure weather to post this to dev list, so please let me know if I should!=
</div><div><br></div><div>I&#39;m trying to hook the latest Groovy interpre=
ter to a JVM scripting notebook environment (<a href=3D"https://github.com/=
bolerio/seco">https://github.com/bolerio/seco</a>). At a minimum I need goo=
d JSR 223 support so that symbols/variables can be shared between scripting=
 languages. With Groovy and its built-in JSR 223 support, it seems like an =
assignment:</div><div><br></div><div>something =3D 10</div><div><br></div><=
div>is placed into the common scripting context, but not a definition like =
this:</div><div><br></div><div>def something =3D 10</div><div><br></div><di=
v>Here is a sample program reproducing the issue:</div><div><br></div><div>=
<div>import javax.script.*;</div><div>import org.codehaus.groovy.jsr223.*;<=
/div><div><br></div><div>public class TestMe</div><div>{</div><div><br></di=
v><div>=C2=A0 public static void main(String[] args)</div><div>=C2=A0 {</di=
v><div>=C2=A0 =C2=A0 ScriptEngine engine =3D (ScriptEngine) new GroovyScrip=
tEngineFactory().getScriptEngine();</div><div>=C2=A0 =C2=A0=C2=A0</div><div=
>=C2=A0 =C2=A0 try</div><div>=C2=A0 =C2=A0 {</div><div>=C2=A0 =C2=A0 =C2=A0=
 String decl =3D &quot;def something =3D 10&quot;;</div><div>=C2=A0 =C2=A0 =
=C2=A0 String stmt =3D &quot;println something&quot;;</div><div>=C2=A0 =C2=
=A0 =C2=A0 engine.eval(decl);</div><div>=C2=A0 =C2=A0 =C2=A0 engine.eval(st=
mt);</div><div>=C2=A0 =C2=A0 }</div><div>=C2=A0 =C2=A0 catch (Exception e)<=
/div><div>=C2=A0 =C2=A0 {</div><div>=C2=A0 =C2=A0 =C2=A0 e.printStackTrace(=
);</div><div>=C2=A0 =C2=A0 }</div><div>=C2=A0 }</div><div>}</div></div><div=
><br></div><div>This yields an error: Caused by: <span class=3D"gmail-s1">g=
roovy.lang.MissingPropertyException</span>: No such property: something for=
 class: Script2</div><div><br></div><div>I played with GroovyShell a bit, p=
assing in my own=C2=A0<span style=3D"font-family:Monaco;font-size:11px">gro=
ovy.lang.Binding implementation and indeed whenever there is a &quot;def na=
me =3D value&quot;, the binding setVariable or setProperty are not called.=
=C2=A0</span></div><div><span style=3D"font-family:Monaco;font-size:11px"><=
br></span></div><div><font face=3D"Monaco"><span style=3D"font-size:11px">I=
s this a bug? If not, is there a way to get access to those symbols introdu=
ced via &#39;def&#39;. Disclaimer: I&#39;m not a Groovy programmer, just tr=
ying to learn enough to make this work.</span></font></div><div><font face=
=3D"Monaco"><span style=3D"font-size:11px"><br></span></font></div><div><fo=
nt face=3D"Monaco"><span style=3D"font-size:11px">Regards</span></font></di=
v>


</div>

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