Thu, 08 Sep 2016 14:39:51 -0700
Merge
1 #// Usage: jjs -scripting interface2.js
3 /*
4 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
5 *
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7 * modification, are permitted provided that the following conditions
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9 *
10 * - Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 *
13 * - Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
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18 * contributors may be used to endorse or promote products derived
19 * from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
22 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
23 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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32 */
34 // Simple example demonstrating how to implement java interface
35 // whose methods are backed by script methods of a script object
37 var ScriptEngineManager = Java.type("javax.script.ScriptEngineManager");
38 // create manager
39 var manager = new ScriptEngineManager();
40 // create engine
41 var engine = manager.getEngineByName("js");
43 // eval code - too many script escapes?
44 // use heredoc !
45 engine.eval(<<CODE
46 var obj = {
47 run: function() {
48 print("I am run method of 'obj'");
49 }
50 };
51 CODE);
53 // create Java interface object whose methods are
54 // implemented by script methods of a script object
55 // This is from javax.script.Invocable. But we are
56 // in JS world, don't worry about types :)
58 var Runnable = Java.type("java.lang.Runnable");
60 var scriptObj = engine.get("obj");
61 var r = engine.getInterface(scriptObj, Runnable.class);
62 print(r.class);
63 r.run();