foreignobject.js revision 802:235d22ccfd24 
1#// Usage: jjs -scripting foreignobject.js
2
3/*
4 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
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 *
17 *   - Neither the name of Oracle nor the names of its
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
24 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
25 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
26 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
27 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
28 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
29 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
30 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
31 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34// cross nashorn engine scripting
35// access script objects from other engines in natural syntax
36
37var ScriptEngineManager = Java.type("javax.script.ScriptEngineManager");
38// create manager
39var manager = new ScriptEngineManager();
40// create engine
41var engine = manager.getEngineByName("js");
42
43// eval code!
44engine.eval(<<CODE
45    var obj = {
46        foo: 42,
47        func: function() {
48            print("func: " + this.foo);
49        }
50    };
51CODE);
52
53// Nashorn engine returns script objects as instance of
54// the class jdk.nashorn.api.scripting.ScriptObjectMirror
55// But nashorn's dynalink linker can treat these objects
56// specially to support natural script syntax to access..
57// In Java code, you need to use ScriptObjectMirror's
58// methods though. Once again, script world is simpler :-)
59
60var foreignObj = engine.get("obj");
61// access properties, functions of it
62// with natural syntax
63print(foreignObj.foo);
64foreignObj.func();
65print(typeof foreignObj.func);
66
67// access engine's global
68var foreignGlobal = engine.eval("this");
69// create objects in engine's world from here!
70print(new foreignGlobal.Object());
71print(new foreignGlobal.Date());
72