samples/jsobj_example.js

Fri, 05 Jun 2015 12:38:53 +0200

author
mhaupt
date
Fri, 05 Jun 2015 12:38:53 +0200
changeset 1398
2f1b9f4daec1
parent 963
e2497b11a021
permissions
-rw-r--r--

8080087: Nashorn $ENV.PWD is originally undefined
Summary: On Windows, the PWD environment variable does not exist and cannot be imported in scripting mode, so it is set explicitly.
Reviewed-by: lagergren, sundar

     1 /*
     2  * Copyright (c) 2014, 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  */
    32 // Flexible script object using AbstractJSObject subclass
    34 var AbstractJSObject = Java.type("jdk.nashorn.api.scripting.AbstractJSObject");
    36 // JSObject example that uses a map for properties and
    37 // falls back to with methods on a java object (for missing
    38 // properties
    40 function makeJSObj(map, fallback) {
    41     return new AbstractJSObject() {
    42         getMember: function(name) {
    43             if (map.containsKey(name)) {
    44                 return map.get(name);
    45             }
    47             var val = fallback[name];
    48             if (typeof val == 'function') {
    49                 return function() {
    50                    var a = arguments;
    51                    switch (a.length) {
    52                        case 0: return fallback[name]();
    53                        case 1: return fallback[name](a[0]);
    54                        case 2: return fallback[name](a[0], a[1]);
    55                        case 3: return fallback[name](a[0], a[1], a[2]);
    56                        case 4: return fallback[name](a[0], a[1], a[2], a[3]);
    57                    }
    58                 }
    59             }
    60         }
    61     }
    62 }
    64 var m = new java.util.HashMap();
    65 m.put("foo", 42);
    66 m.put("bar", 'hello');
    68 var obj = makeJSObj(m, new java.io.File("."));
    70 print(obj.foo);
    71 print(obj.bar);
    72 print(obj.getAbsolutePath());
    73 print(obj.isDirectory());

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