aoqi@0: #// Usage: jjs -scripting -cp . jsobject.js aoqi@0: aoqi@0: /* aoqi@0: * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. aoqi@0: * aoqi@0: * Redistribution and use in source and binary forms, with or without aoqi@0: * modification, are permitted provided that the following conditions aoqi@0: * are met: aoqi@0: * aoqi@0: * - Redistributions of source code must retain the above copyright aoqi@0: * notice, this list of conditions and the following disclaimer. aoqi@0: * aoqi@0: * - Redistributions in binary form must reproduce the above copyright aoqi@0: * notice, this list of conditions and the following disclaimer in the aoqi@0: * documentation and/or other materials provided with the distribution. aoqi@0: * aoqi@0: * - Neither the name of Oracle nor the names of its aoqi@0: * contributors may be used to endorse or promote products derived aoqi@0: * from this software without specific prior written permission. aoqi@0: * aoqi@0: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS aoqi@0: * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, aoqi@0: * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR aoqi@0: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR aoqi@0: * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, aoqi@0: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, aoqi@0: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR aoqi@0: * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF aoqi@0: * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING aoqi@0: * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS aoqi@0: * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. aoqi@0: */ aoqi@0: aoqi@0: // This sample demonstrats how to expose a aoqi@0: // script friendly object from your java code aoqi@0: // by implementing jdk.nashorn.api.scripting.JSObject aoqi@0: aoqi@0: // compile the java program aoqi@0: `javac BufferArray.java`; aoqi@0: aoqi@0: // print error, if any and exit aoqi@0: if ($ERR != '') { aoqi@0: print($ERR); aoqi@0: exit($EXIT); aoqi@0: } aoqi@0: aoqi@0: // create BufferArray aoqi@0: var BufferArray = Java.type("BufferArray"); aoqi@0: var bb = new BufferArray(10); aoqi@0: aoqi@0: // 'magic' methods called to retrieve set/get aoqi@0: // properties on BufferArray instance aoqi@0: var len = bb.length; aoqi@0: print("bb.length = " + len) aoqi@0: for (var i = 0; i < len; i++) { aoqi@0: bb[i] = i*i; aoqi@0: } aoqi@0: aoqi@0: for (var i = 0; i < len; i++) { aoqi@0: print(bb[i]); aoqi@0: } aoqi@0: aoqi@0: // get underlying buffer by calling a method aoqi@0: // on BufferArray magic object aoqi@0: aoqi@0: // 'buf' is a function member aoqi@0: print(typeof bb.buf); aoqi@0: var buf = bb.buf(); aoqi@0: aoqi@0: // use retrieved underlying nio buffer aoqi@0: var cap = buf.capacity(); aoqi@0: print("buf.capacity() = " + cap); aoqi@0: for (var i = 0; i < cap; i++) { aoqi@0: print(buf.get(i)); aoqi@0: }