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 32 import javax.script.Bindings; 33 import javax.script.ScriptContext; 34 import javax.script.ScriptEngine; 35 import javax.script.ScriptEngineManager; 36 import javax.script.SimpleScriptContext; 37 38 @SuppressWarnings("javadoc") 39 public class MultiScopes { main(final String[] args)40 public static void main(final String[] args) throws Exception { 41 final ScriptEngineManager manager = new ScriptEngineManager(); 42 final ScriptEngine engine = manager.getEngineByName("nashorn"); 43 44 engine.put("x", "hello"); 45 // print global variable "x" 46 engine.eval("print(x);"); 47 // the above line prints "hello" 48 49 // Now, pass a different script context 50 final ScriptContext newContext = new SimpleScriptContext(); 51 newContext.setBindings(engine.createBindings(), ScriptContext.ENGINE_SCOPE); 52 final Bindings engineScope = newContext.getBindings(ScriptContext.ENGINE_SCOPE); 53 54 // add new variable "x" to the new engineScope 55 engineScope.put("x", "world"); 56 57 // execute the same script - but this time pass a different script context 58 engine.eval("print(x);", newContext); 59 // the above line prints "world" 60 } 61 } 62 63 64