1 /* 2 * Copyright (c) 2005, 2006, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 // 25 26 import java.io.*; 27 import java.util.*; 28 29 30 public class Load { 31 32 private static PrintStream out = System.err; 33 main(String[] args)34 public static void main(String[] args) throws Exception { 35 36 boolean installedOnly = false; 37 38 List<String> expected = new ArrayList<String>(Arrays.asList(args)); 39 if (!expected.isEmpty() && expected.get(0).equals("-i")) { 40 expected.remove(0); 41 installedOnly = true; 42 } 43 if (expected.isEmpty()) 44 throw new Exception("usage: Load [-i] ( fail | provider-class-name )*"); 45 46 ServiceLoader<FooService> sl = (installedOnly 47 ? ServiceLoader.loadInstalled(FooService.class) 48 : ServiceLoader.load(FooService.class)); 49 out.format("%s%n", sl); 50 Iterator<FooService> sli = sl.iterator(); 51 Iterator<String> ei = expected.iterator(); 52 53 for (;; ei.remove()) { 54 FooService fp = null; 55 try { 56 if (!sli.hasNext()) 57 break; 58 fp = sli.next(); 59 } catch (ServiceConfigurationError x) { 60 if (ei.next().equals("fail")) { 61 out.format("Failed as expected: %s%n", x); 62 continue; 63 } 64 throw x; 65 } 66 String ec = ei.next(); 67 if (!fp.getClass().getName().equals(ec)) 68 throw new 69 Exception(String.format("Wrong provider %s; expected %s", 70 fp.getClass().getName(), ec)); 71 out.format("Provider found: %s%n", fp.getClass().getName()); 72 } 73 74 if (ei.hasNext()) 75 throw new Exception("Missing providers: " + expected); 76 77 } 78 79 } 80