72 lines
2.7 KiB
JavaScript
72 lines
2.7 KiB
JavaScript
#// Usage: jjs -scripting foreignobject.js
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/*
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* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* - Neither the name of Oracle nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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// cross nashorn engine scripting
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// access script objects from other engines in natural syntax
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var ScriptEngineManager = Java.type("javax.script.ScriptEngineManager");
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// create manager
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var manager = new ScriptEngineManager();
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// create engine
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var engine = manager.getEngineByName("js");
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// eval code!
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engine.eval(<<CODE
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var obj = {
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foo: 42,
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func: function() {
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print("func: " + this.foo);
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}
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};
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CODE);
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// Nashorn engine returns script objects as instance of
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// the class jdk.nashorn.api.scripting.ScriptObjectMirror
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// But nashorn's dynalink linker can treat these objects
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// specially to support natural script syntax to access..
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// In Java code, you need to use ScriptObjectMirror's
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// methods though. Once again, script world is simpler :-)
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var foreignObj = engine.get("obj");
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// access properties, functions of it
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// with natural syntax
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print(foreignObj.foo);
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foreignObj.func();
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print(typeof foreignObj.func);
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// access engine's global
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var foreignGlobal = engine.eval("this");
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// create objects in engine's world from here!
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print(new foreignGlobal.Object());
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print(new foreignGlobal.Date());
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