Example usage for jdk.nashorn.api.scripting NashornScriptEngineFactory getScriptEngine

Introduction

In this page you can find the example usage for jdk.nashorn.api.scripting NashornScriptEngineFactory getScriptEngine.

Prototype

public ScriptEngine getScriptEngine(final String... args) 

Source Link

Document

Create a new Script engine initialized with the given arguments.

Usage

From source file:org.xbib.elasticsearch.script.nashorn.NashornScriptEngineService.java

License:Apache License

@Inject
public NashornScriptEngineService(Settings settings) {
    super(settings);
    // setup the engine to share the definition of the Ecma script built-in objects: aka NashornGlobal.
    //      System.setProperty("nashorn.args", "--global-per-engine");
    //      ScriptEngineManager m = new ScriptEngineManager();
    //      this.engine = m.getEngineByName("nashorn");
    // changing a system property is not allowed by the tests.
    // Use the internal API instead
    NashornScriptEngineFactory factory = new NashornScriptEngineFactory();
    this.engine = factory.getScriptEngine(new String[] { "--global-per-engine" });
}

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From source file:se.idsecurity.LDIFTransform.GetTransformer.java

License:Open Source License

/**
 * Attempts to load a JavaScript file that contains code that extends
 * the TransformerCommon abstract class.
 * @param filePath The path to the JavaScript file
 * @param transformFile The properties file
 * @return An object that extends TransformerCommon
 *//* ww w .  ja  va 2s .  c  om*/
private static TransformerCommon getFromJavascript(String filePath, File transformFile) {
    try {
        //https://wiki.openjdk.java.net/display/Nashorn/Nashorn+jsr223+engine+notes
        NashornScriptEngineFactory nsef = new NashornScriptEngineFactory();

        ScriptEngine engine = nsef.getScriptEngine("--language=es6");

        Logger jsLogger = LoggerFactory.getLogger("JS: " + new File(filePath).getName());
        engine.put("logger", jsLogger);

        Bindings bindings = new SimpleBindings();

        engine.getContext().setBindings(bindings, ScriptContext.GLOBAL_SCOPE);

        Object eval = engine.eval(new FileReader(new File(filePath)));

        Invocable invocable = (Invocable) engine;

        Object transformerCommonFromJavaScript = invocable.invokeFunction("getTransformer", transformFile);

        TransformerCommon tc = (TransformerCommon) transformerCommonFromJavaScript;

        return tc;

    } catch (Exception e) {
        logger.error("Couldn't load class " + filePath, e);
        System.exit(1);
        return null;
    }
}

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