samples/sort_by_java8.js

Tue, 22 Mar 2016 21:31:52 -0700

author
asaha
date
Tue, 22 Mar 2016 21:31:52 -0700
changeset 1810
d0fba38a0705
parent 1524
3f4320a01539
permissions
-rw-r--r--

Added tag jdk8u92-b13 for changeset e2294411edbd

     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  */
    32 // Simple sorting with Java8 APIs
    34 // Separation key-extraction from key ordering
    36 // Simple demo for Comparator.comparing
    37 // http://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html#comparing-java.util.function.Function-
    39 // data to be sorted
    40 var cards = [
    41    { name: "hello", email: "foo@hello.com" },
    42    { name: "world", email: "bar@world.com" },
    43    { name: "see", email: "see@dontsee.com" },
    44 ];
    46 var Collections = java.util.Collections;
    47 var Comparator = java.util.Comparator;
    49 // sort records name in reverse order of names
    50 Collections.sort(cards,
    51   Comparator.comparing(function(a) a.name).reversed());
    53 print(JSON.stringify(cards))
    55 // sort records by email
    56 Collections.sort(cards,
    57   Comparator.comparing(function(a) a.email));
    59 print(JSON.stringify(cards))

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