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 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"); 42 43 // eval code! 44 engine.eval(<<CODE 45 var obj = { 46 foo: 42, 47 func: function() { 48 print("func: " + this.foo); 49 } 50 }; 51 CODE); 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 60 var foreignObj = engine.get("obj"); 61 // access properties, functions of it 62 // with natural syntax 63 print(foreignObj.foo); 64 foreignObj.func(); 65 print(typeof foreignObj.func); 66 67 // access engine's global 68 var foreignGlobal = engine.eval("this"); 69 // create objects in engine's world from here! 70 print(new foreignGlobal.Object()); 71 print(new foreignGlobal.Date());