samples/engine/foreignobject.js

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

author
mhaupt
date
Fri, 05 Jun 2015 12:38:53 +0200
changeset 1398
2f1b9f4daec1
parent 962
ac62e33a99b0
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 #// Usage: jjs -scripting foreignobject.js
     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
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    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
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    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  */
    34 // cross nashorn engine scripting
    35 // access script objects from other engines in natural syntax
    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");
    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);
    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 :-)
    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);
    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());

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