Athijegannathan Sundararajan | 31aa060 | 2013-02-05 09:11:03 +0530 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. |
| 3 | * |
| 4 | * Redistribution and use in source and binary forms, with or without |
| 5 | * modification, are permitted provided that the following conditions |
| 6 | * are met: |
| 7 | * |
| 8 | * - Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * |
| 11 | * - Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
| 14 | * |
| 15 | * - Neither the name of Oracle nor the names of its |
| 16 | * contributors may be used to endorse or promote products derived |
| 17 | * from this software without specific prior written permission. |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS |
| 20 | * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| 21 | * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| 23 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 24 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 25 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 26 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 27 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 28 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 29 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 30 | */ |
| 31 | |
Marcus Lagergren | 88fcdf5 | 2014-11-03 11:47:41 +0100 | [diff] [blame] | 32 | import javax.script.Invocable; |
| 33 | import javax.script.ScriptEngine; |
| 34 | import javax.script.ScriptEngineManager; |
Athijegannathan Sundararajan | 31aa060 | 2013-02-05 09:11:03 +0530 | [diff] [blame] | 35 | |
Marcus Lagergren | 88fcdf5 | 2014-11-03 11:47:41 +0100 | [diff] [blame] | 36 | @SuppressWarnings("javadoc") |
Athijegannathan Sundararajan | 31aa060 | 2013-02-05 09:11:03 +0530 | [diff] [blame] | 37 | public class InvokeScriptMethod { |
Marcus Lagergren | 88fcdf5 | 2014-11-03 11:47:41 +0100 | [diff] [blame] | 38 | public static void main(final String[] args) throws Exception { |
| 39 | final ScriptEngineManager manager = new ScriptEngineManager(); |
| 40 | final ScriptEngine engine = manager.getEngineByName("nashorn"); |
Athijegannathan Sundararajan | 31aa060 | 2013-02-05 09:11:03 +0530 | [diff] [blame] | 41 | |
| 42 | // JavaScript code in a String. This code defines a script object 'obj' |
| 43 | // with one method called 'hello'. |
Marcus Lagergren | 88fcdf5 | 2014-11-03 11:47:41 +0100 | [diff] [blame] | 44 | final String script = "var obj = new Object(); obj.hello = function(name) { print('Hello, ' + name); }"; |
Athijegannathan Sundararajan | 31aa060 | 2013-02-05 09:11:03 +0530 | [diff] [blame] | 45 | // evaluate script |
| 46 | engine.eval(script); |
| 47 | |
| 48 | // javax.script.Invocable is an optional interface. |
| 49 | // Check whether your script engine implements or not! |
| 50 | // Note that the JavaScript engine implements Invocable interface. |
Marcus Lagergren | 88fcdf5 | 2014-11-03 11:47:41 +0100 | [diff] [blame] | 51 | final Invocable inv = (Invocable) engine; |
Athijegannathan Sundararajan | 31aa060 | 2013-02-05 09:11:03 +0530 | [diff] [blame] | 52 | |
| 53 | // get script object on which we want to call the method |
Marcus Lagergren | 88fcdf5 | 2014-11-03 11:47:41 +0100 | [diff] [blame] | 54 | final Object obj = engine.get("obj"); |
Athijegannathan Sundararajan | 31aa060 | 2013-02-05 09:11:03 +0530 | [diff] [blame] | 55 | |
| 56 | // invoke the method named "hello" on the script object "obj" |
| 57 | inv.invokeMethod(obj, "hello", "Script Method !!" ); |
| 58 | } |
| 59 | } |