1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/samples/engine/interface2.js Wed Apr 27 01:36:41 2016 +0800
1.3 @@ -0,0 +1,63 @@
1.4 +#// Usage: jjs -scripting interface2.js
1.5 +
1.6 +/*
1.7 + * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
1.8 + *
1.9 + * Redistribution and use in source and binary forms, with or without
1.10 + * modification, are permitted provided that the following conditions
1.11 + * are met:
1.12 + *
1.13 + * - Redistributions of source code must retain the above copyright
1.14 + * notice, this list of conditions and the following disclaimer.
1.15 + *
1.16 + * - Redistributions in binary form must reproduce the above copyright
1.17 + * notice, this list of conditions and the following disclaimer in the
1.18 + * documentation and/or other materials provided with the distribution.
1.19 + *
1.20 + * - Neither the name of Oracle nor the names of its
1.21 + * contributors may be used to endorse or promote products derived
1.22 + * from this software without specific prior written permission.
1.23 + *
1.24 + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
1.25 + * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
1.26 + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
1.27 + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
1.28 + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
1.29 + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
1.30 + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
1.31 + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
1.32 + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
1.33 + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
1.34 + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1.35 + */
1.36 +
1.37 +// Simple example demonstrating how to implement java interface
1.38 +// whose methods are backed by script methods of a script object
1.39 +
1.40 +var ScriptEngineManager = Java.type("javax.script.ScriptEngineManager");
1.41 +// create manager
1.42 +var manager = new ScriptEngineManager();
1.43 +// create engine
1.44 +var engine = manager.getEngineByName("js");
1.45 +
1.46 +// eval code - too many script escapes?
1.47 +// use heredoc !
1.48 +engine.eval(<<CODE
1.49 + var obj = {
1.50 + run: function() {
1.51 + print("I am run method of 'obj'");
1.52 + }
1.53 + };
1.54 +CODE);
1.55 +
1.56 +// create Java interface object whose methods are
1.57 +// implemented by script methods of a script object
1.58 +// This is from javax.script.Invocable. But we are
1.59 +// in JS world, don't worry about types :)
1.60 +
1.61 +var Runnable = Java.type("java.lang.Runnable");
1.62 +
1.63 +var scriptObj = engine.get("obj");
1.64 +var r = engine.getInterface(scriptObj, Runnable.class);
1.65 +print(r.class);
1.66 +r.run();
