1 /* 2 * Copyright (c) 2015, 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 */ 31 32 // Demonstrate how to provide a default fall-through solution for adapted Java 33 // objects, forwarding all calls that are not adapted. 34 35 var Date = Java.type('java.time.LocalDate') 36 37 function wrapDate(d) { 38 return new JSAdapter() { 39 __call__: function() { 40 // adapted (extra) methods 41 if (arguments[0] === 'yesterday') { 42 return d.minusDays(1) 43 } 44 // fall-through: forward all other, non-adapted method calls 45 var args = [d].concat(Array.prototype.slice.call(arguments, 1)) 46 return Function.call.apply(d[arguments[0]], args) 47 } 48 } 49 } 50 51 var now = wrapDate(Date.now()) 52 53 print(now) 54 print(now.yesterday()) // adapted 55 print(now.lengthOfMonth()) // fall through to original method 56 print(now.atTime(23, 42)) // arguments are passed through 57