Examples of javax.script.ScriptEngine.eval()

javax.script.ScriptEngine.eval()
Evaluates the script with the given context, returning any value. @param script path to the script @param context the script context

    // create an R engine
    ScriptEngine engine = factory.getScriptEngine();


    HashMap<String, String> h = new HashMap<String, String>();
    engine.put("h", h);
    engine.eval("import(java.util.HashMap) \n"
                    + " print(h$size())");
  }
  
}

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        engine.put("user", user);
        engine.put("date", new Date());
        try {


            Object result = engine.eval(script);
            if (result instanceof Boolean) {
                return ((Boolean) result).booleanValue();
            }


        } catch (ScriptException e) {

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            for (Map.Entry<String, Object> entry : entries) {
                engine.put(entry.getKey(), entry.getValue());
            }
        }
        try {
            this.result = engine.eval(script);
        } catch (ScriptException e) {
            this.result = e.getMessage();
        }
    }

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            }
            if (Debug.verboseOn()) {
                Debug.logVerbose("Begin processing script [" + script + "] using engine " + engine.getClass().getName(), module);
            }
            ScriptContext scriptContext = createScriptContext(context);
            return engine.eval(script, scriptContext);
        } catch (Exception e) {
            String errMsg = "Error running " + language + " script [" + script + "]: " + e.toString();
            Debug.logWarning(e, errMsg, module);
            throw new IllegalArgumentException(errMsg);
        }

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            Debug.logVerbose("Begin processing script [" + filePath + "] using engine " + engine.getClass().getName(), module);
        }
        engine.setContext(scriptContext);
        URL scriptUrl = FlexibleLocation.resolveLocation(filePath);
        FileReader reader = new FileReader(new File(scriptUrl.getFile()));
        Object result = engine.eval(reader);
        if (UtilValidate.isNotEmpty(functionName)) {
            try {
                Invocable invocableEngine = (Invocable) engine;
                result = invocableEngine.invokeFunction(functionName, args == null ? EMPTY_ARGS : args);
            } catch (ClassCastException e) {

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    maybeInvocableEngine.setContext(globalScriptContext);
    try
    {
      maybeInvocableEngine.eval(globalScript);
    }
    catch (ScriptException e)
    {
      throw new ReportDataFactoryException("DataFactoryScriptingSupport: Failed to execute datafactory init script.", e);
    }

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        throw new ScriptException(String.format
            ("DataFactoryScriptingSupport: Failed to locate scripting engine for language '%s'.", scriptLanguage));
      }


      scriptEngine.setContext(context);
      return scriptEngine.eval(script);
    }


    public Object evalFile(final String file) throws ScriptException
    {
      return evalFile(file, defaultScriptLanguage);

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                // Don't pollute the engine namespace with the listener functions
                scriptEngine.setBindings(new SimpleBindings(), ScriptContext.ENGINE_SCOPE);


                try {
                    scriptEngine.eval(script);
                } catch (ScriptException exception) {
                    reportException(exception, script);
                    break;
                }

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                        }


                        BufferedReader scriptReader = null;
                        try {
                            scriptReader = new BufferedReader(new InputStreamReader(scriptLocation.openStream()));
                            scriptEngine.eval(scriptReader);
                        } catch(ScriptException exception) {
                            reportException(exception);
                        } finally {
                            if (scriptReader != null) {
                                scriptReader.close();

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                    }


                    scriptEngine.setBindings(scriptEngineManager.getBindings(), ScriptContext.ENGINE_SCOPE);


                    try {
                        scriptEngine.eval(script);
                    } catch (ScriptException exception) {
                        reportException(exception, script);
                    }
                }

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