| /* |
| * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * - Neither the name of Oracle nor the names of its |
| * contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS |
| * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| // Flexible script object using AbstractJSObject subclass |
| |
| var AbstractJSObject = Java.type("jdk.nashorn.api.scripting.AbstractJSObject"); |
| |
| // JSObject example that uses a map for properties and |
| // falls back to with methods on a java object (for missing |
| // properties |
| |
| function makeJSObj(map, fallback) { |
| return new AbstractJSObject() { |
| getMember: function(name) { |
| if (map.containsKey(name)) { |
| return map.get(name); |
| } |
| |
| var val = fallback[name]; |
| if (typeof val == 'function') { |
| return function() { |
| var a = arguments; |
| switch (a.length) { |
| case 0: return fallback[name](); |
| case 1: return fallback[name](a[0]); |
| case 2: return fallback[name](a[0], a[1]); |
| case 3: return fallback[name](a[0], a[1], a[2]); |
| case 4: return fallback[name](a[0], a[1], a[2], a[3]); |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| var m = new java.util.HashMap(); |
| m.put("foo", 42); |
| m.put("bar", 'hello'); |
| |
| var obj = makeJSObj(m, new java.io.File(".")); |
| |
| print(obj.foo); |
| print(obj.bar); |
| print(obj.getAbsolutePath()); |
| print(obj.isDirectory()); |