Mercurial > jdk8-mips64-public > nashorn / annotate
docs/source/MultiScopes.java@e1e27c4262be (annotated)
docs/source/MultiScopes.java
Mon, 03 Nov 2014 11:47:41 +0100
- author
- lagergren
- date
- Mon, 03 Nov 2014 11:47:41 +0100
- changeset 1082
- e1e27c4262be
- parent 0
- b1a7da25b547
- permissions
- -rw-r--r--
8060204: Fix warnings in Joni and tests
Reviewed-by: hannesw, sundar, attila
| aoqi@0 | 1 | /* |
| aoqi@0 | 2 | * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. |
| aoqi@0 | 3 | * |
| aoqi@0 | 4 | * Redistribution and use in source and binary forms, with or without |
| aoqi@0 | 5 | * modification, are permitted provided that the following conditions |
| aoqi@0 | 6 | * are met: |
| aoqi@0 | 7 | * |
| aoqi@0 | 8 | * - Redistributions of source code must retain the above copyright |
| aoqi@0 | 9 | * notice, this list of conditions and the following disclaimer. |
| aoqi@0 | 10 | * |
| aoqi@0 | 11 | * - Redistributions in binary form must reproduce the above copyright |
| aoqi@0 | 12 | * notice, this list of conditions and the following disclaimer in the |
| aoqi@0 | 13 | * documentation and/or other materials provided with the distribution. |
| aoqi@0 | 14 | * |
| aoqi@0 | 15 | * - Neither the name of Oracle nor the names of its |
| aoqi@0 | 16 | * contributors may be used to endorse or promote products derived |
| aoqi@0 | 17 | * from this software without specific prior written permission. |
| aoqi@0 | 18 | * |
| aoqi@0 | 19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS |
| aoqi@0 | 20 | * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| aoqi@0 | 21 | * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| aoqi@0 | 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| aoqi@0 | 23 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| aoqi@0 | 24 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| aoqi@0 | 25 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| aoqi@0 | 26 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| aoqi@0 | 27 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| aoqi@0 | 28 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| aoqi@0 | 29 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| aoqi@0 | 30 | */ |
| aoqi@0 | 31 | |
| lagergren@1082 | 32 | import javax.script.Bindings; |
| lagergren@1082 | 33 | import javax.script.ScriptContext; |
| lagergren@1082 | 34 | import javax.script.ScriptEngine; |
| lagergren@1082 | 35 | import javax.script.ScriptEngineManager; |
| lagergren@1082 | 36 | import javax.script.SimpleScriptContext; |
| aoqi@0 | 37 | |
| lagergren@1082 | 38 | @SuppressWarnings("javadoc") |
| aoqi@0 | 39 | public class MultiScopes { |
| lagergren@1082 | 40 | public static void main(final String[] args) throws Exception { |
| lagergren@1082 | 41 | final ScriptEngineManager manager = new ScriptEngineManager(); |
| lagergren@1082 | 42 | final ScriptEngine engine = manager.getEngineByName("nashorn"); |
| aoqi@0 | 43 | |
| aoqi@0 | 44 | engine.put("x", "hello"); |
| aoqi@0 | 45 | // print global variable "x" |
| aoqi@0 | 46 | engine.eval("print(x);"); |
| aoqi@0 | 47 | // the above line prints "hello" |
| aoqi@0 | 48 | |
| aoqi@0 | 49 | // Now, pass a different script context |
| lagergren@1082 | 50 | final ScriptContext newContext = new SimpleScriptContext(); |
| aoqi@0 | 51 | newContext.setBindings(engine.createBindings(), ScriptContext.ENGINE_SCOPE); |
| lagergren@1082 | 52 | final Bindings engineScope = newContext.getBindings(ScriptContext.ENGINE_SCOPE); |
| aoqi@0 | 53 | |
| aoqi@0 | 54 | // add new variable "x" to the new engineScope |
| aoqi@0 | 55 | engineScope.put("x", "world"); |
| aoqi@0 | 56 | |
| aoqi@0 | 57 | // execute the same script - but this time pass a different script context |
| aoqi@0 | 58 | engine.eval("print(x);", newContext); |
| aoqi@0 | 59 | // the above line prints "world" |
| aoqi@0 | 60 | } |
| aoqi@0 | 61 | } |
| aoqi@0 | 62 | |
| aoqi@0 | 63 |
