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  1. JDK
  2. JDK-8021361

ClassCastException:.ScriptObjectMirror -> ScriptObject when getInterface called on object from different ScriptContext

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Details

    • Bug
    • Resolution: Fixed
    • P3
    • 8
    • 8
    • core-libs
    • None
    • b102
    • generic
    • generic

    Description

      import javax.script.*;

      public class Main {
         public static void main(String[] args) throws Exception {
             ScriptEngineManager m = new ScriptEngineManager();
             ScriptEngine e = m.getEngineByName("nashorn");
             Object obj = e.eval("obj = { run: function() { print('hello') } }");

             ScriptContext ctxt = new SimpleScriptContext();
             ctxt.setBindings(e.createBindings(), ScriptContext.ENGINE_SCOPE);
             e.setContext(ctxt);

             Runnable r = ((Invocable)e).getInterface(obj, Runnable.class);
             r.run();
         }
      }

      Results in ClassCastException:

      Exception in thread "main" java.lang.ClassCastException: jdk.nashorn.api.scripting.ScriptObjectMirror cannot be cast to jdk.nashorn.internal.runtime.ScriptObject
      at jdk.nashorn.api.scripting.NashornScriptEngine.getInterfaceInner(NashornScriptEngine.java:187)
      at jdk.nashorn.api.scripting.NashornScriptEngine.getInterface(NashornScriptEngine.java:224)
      at Main.main(Main.java:14)

      This issue is similar to JDK-8021252 - similar issue with Invocable.invokeMethod implementation.

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            sundar Sundararajan Athijegannathan
            sundar Sundararajan Athijegannathan
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              Created:
              Updated:
              Resolved: