Example usage for javax.script Invocable invokeFunction

Introduction

In this page you can find the example usage for javax.script Invocable invokeFunction.

Prototype

public Object invokeFunction(String name, Object... args) throws ScriptException, NoSuchMethodException;

Source Link

Document

Used to call top-level procedures and functions defined in scripts.

Usage

From source file:Main.java

public static void main(String[] args) throws Exception {
    ScriptEngineManager manager = new ScriptEngineManager();

    ScriptEngine engine = manager.getEngineByName("js");

    engine.eval("function add (a, b) {c = a + b; return c; }");
    Invocable jsInvoke = (Invocable) engine;

    Object result1 = jsInvoke.invokeFunction("add", new Object[] { 10, 5 });
    System.out.println(result1);/*  w w  w  . j  a  va2 s  . c  om*/

    Adder adder = jsInvoke.getInterface(Adder.class);
    int result2 = adder.add(10, 5);
    System.out.println(result2);
}

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From source file:InvocableTest.java

public static void main(String args[]) {
    ScriptEngineManager manager = new ScriptEngineManager();
    ScriptEngine engine = manager.getEngineByName("javascript");
    try {// w ww  .j  a  va  2 s .  c o  m
        engine.eval("function myFunction(name){var output = '';"
                + "  for (i = 0; i <= name.length; i++) {output = name.charAt(i)+'-'+ output"
                + "  } return output;}");
        Invocable invokeEngine = (Invocable) engine;
        Object o = invokeEngine.invokeFunction("myFunction", "abcde");
        System.out.println(o);

    } catch (NoSuchMethodException e) {
        System.err.println(e);
    } catch (ScriptException e) {
        System.err.println(e);
    }
}

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From source file:Main.java

public static void main(String[] args) throws Exception {
    ScriptEngine engine = new ScriptEngineManager().getEngineByName("nashorn");
    engine.eval("load('res/nashorn5.js')");

    Invocable invocable = (Invocable) engine;

    Product product = new Product();
    product.setName("Rubber");
    product.setPrice(1.99);/*from   www. java2s .co  m*/
    product.setStock(1037);

    Object result = invocable.invokeFunction("getValueOfGoods", product);
    System.out.println(result);
}

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From source file:Main.java

public static Object invokeFunction(String filepath, String funcname, Object... params) {
    try {/*from w  w  w  .  j  a v  a 2 s  .  c  om*/
        ScriptEngineManager sem = new ScriptEngineManager();
        ScriptEngine jsEngine = sem.getEngineByName("js");
        jsEngine.eval(new FileReader(filepath));
        Invocable invocable = (Invocable) jsEngine;
        return invocable.invokeFunction(funcname, params);
    } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    return null;
}

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From source file:com.intbit.util.ServletUtil.java

public static String getServerName(ServletContext context) {
    try {//w w  w  .j a va 2s. c  o  m
        ScriptEngineManager manager = new ScriptEngineManager();
        ScriptEngine engine = manager.getEngineByName("JavaScript");
        String path = context.getRealPath("") + "/js/configurations.js";
        // read script file
        engine.eval(Files.newBufferedReader(Paths.get(path), StandardCharsets.UTF_8));

        Invocable inv = (Invocable) engine;
        // call function from script file
        return inv.invokeFunction("getHost", "").toString();
    } catch (Exception ex) {
        return "http://clients.brndbot.com/BrndBot/";
    }
}

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From source file:org.eclairjs.nashorn.Utils.java

public static Object createJavaScriptObject(Object o) {
    /*//  w  ww  .  j  av a2  s.c  o  m
    FIXME we should be able to remove this once all the Spark objects are
    wrappered by Java
     */
    Object obj = null;
    try {
        Invocable invocable = (Invocable) NashornEngineSingleton.getEngine();
        obj = invocable.invokeFunction("createJavaScriptSparkObject", o);
    } catch (java.lang.Exception e) {
        e.printStackTrace();
    }
    return obj;
}

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From source file:org.eclairjs.nashorn.Utils.java

public static String JsonStringify(Object o) {
    String jsonStr = null;//from   w  w  w  .j a  v  a 2s .  c  o m
    if (o == null) {
        return "";
    }
    try {
        Invocable invocable = (Invocable) NashornEngineSingleton.getEngine();
        jsonStr = (String) invocable.invokeFunction("objectToJsonString", o);
    } catch (java.lang.Exception e) {
        e.printStackTrace();
    }
    return jsonStr;

}

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From source file:org.eclairjs.nashorn.Utils.java

public static Object createLambdaFunction(Object func, Object clazz, Object bindArgs) {
    /*/*from  w  ww.ja  va 2s .c  o m*/
    FIXME we might be able to move this from JavaScript to Java once we have converted all the
    wrappper objects to Java
     */
    Object obj = null;
    try {
        Invocable invocable = (Invocable) NashornEngineSingleton.getEngine();
        Object params[] = { func, clazz, null, bindArgs };
        obj = invocable.invokeFunction("createLambdaFunction", params);
    } catch (java.lang.Exception e) {
        e.printStackTrace();
    }
    return obj;
}

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From source file:org.eclairjs.nashorn.Utils.java

public static Object createLambdaFunction(Object func, Object clazz, Object context, Object bindArgs) {
    /*/*from   www .  j  a v  a  2s . c om*/
    FIXME we might be able to move this from JavaScript to Java once we have converted all the
    wrappper objects to Java
     */
    Object obj = null;
    try {
        Invocable invocable = (Invocable) NashornEngineSingleton.getEngine();
        Object params[] = { func, clazz, context, bindArgs };
        obj = invocable.invokeFunction("createLambdaFunction", params);
    } catch (java.lang.Exception e) {
        e.printStackTrace();
    }
    return obj;
}

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From source file:org.eclairjs.nashorn.Utils.java

public static Object createLambdaFunction(Object func, Object clazz, Object context, Object bindArgs,
        org.apache.spark.sql.Encoder encoder) {
    /*//from   ww w  .  j  ava  2  s .com
    FIXME we might be able to move this from JavaScript to Java once we have converted all the
    wrappper objects to Java
     */
    Object obj = null;
    try {
        Invocable invocable = (Invocable) NashornEngineSingleton.getEngine();
        Object params[] = { func, clazz, context, bindArgs, encoder };
        obj = invocable.invokeFunction("createLambdaFunction", params);
    } catch (java.lang.Exception e) {
        e.printStackTrace();
    }
    return obj;
}

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