J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2005-2006 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. |
| 8 | * |
| 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| 13 | * accompanied this code). |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License version |
| 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 18 | * |
| 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | // |
| 25 | |
| 26 | import java.io.*; |
| 27 | import java.util.*; |
| 28 | |
| 29 | |
| 30 | public class Basic { |
| 31 | |
| 32 | private static PrintStream out = System.err; |
| 33 | |
| 34 | private static <T> Set<T> setOf(Iterable<T> it) { |
| 35 | Set<T> s = new HashSet<T>(); |
| 36 | for (T t : it) |
| 37 | s.add(t); |
| 38 | return s; |
| 39 | } |
| 40 | |
| 41 | private static <T> void checkEquals(Set<T> s1, Set<T> s2, boolean eq) { |
| 42 | if (s1.equals(s2) != eq) |
| 43 | throw new RuntimeException(String.format("%b %s : %s", |
| 44 | eq, s1, s2)); |
| 45 | } |
| 46 | |
| 47 | public static void main(String[] args) { |
| 48 | |
| 49 | ServiceLoader<FooService> sl = ServiceLoader.load(FooService.class); |
| 50 | out.format("%s%n", sl); |
| 51 | |
| 52 | // Providers are cached |
| 53 | Set<FooService> ps = setOf(sl); |
| 54 | checkEquals(ps, setOf(sl), true); |
| 55 | |
| 56 | // The cache can be flushed and reloaded |
| 57 | sl.reload(); |
| 58 | checkEquals(ps, setOf(sl), false); |
| 59 | |
| 60 | } |
| 61 | |
| 62 | } |