Mercurial > jdk8-mips64-public > jaxws / file comparison
comparison: src/share/jaxws_classes/com/sun/xml/internal/org/jvnet/mimepull/FactoryFinder.java
src/share/jaxws_classes/com/sun/xml/internal/org/jvnet/mimepull/FactoryFinder.java
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| 1 /* | |
| 2 * Copyright (c) 1997, 2012, 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. Oracle designates this | |
| 8 * particular file as subject to the "Classpath" exception as provided | |
| 9 * by Oracle in the LICENSE file that accompanied this code. | |
| 10 * | |
| 11 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 * accompanied this code). | |
| 16 * | |
| 17 * You should have received a copy of the GNU General Public License version | |
| 18 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 * | |
| 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 * or visit www.oracle.com if you need additional information or have any | |
| 23 * questions. | |
| 24 */ | |
| 25 | |
| 26 package com.sun.xml.internal.org.jvnet.mimepull; | |
| 27 | |
| 28 import java.io.BufferedReader; | |
| 29 import java.io.IOException; | |
| 30 import java.io.InputStream; | |
| 31 import java.io.InputStreamReader; | |
| 32 import java.util.logging.Level; | |
| 33 import java.util.logging.Logger; | |
| 34 | |
| 35 class FactoryFinder { | |
| 36 | |
| 37 private static ClassLoader cl = FactoryFinder.class.getClassLoader(); | |
| 38 | |
| 39 static Object find(String factoryId) throws ClassNotFoundException, | |
| 40 InstantiationException, IllegalAccessException { | |
| 41 String systemProp = System.getProperty(factoryId); | |
| 42 if (systemProp != null) { | |
| 43 return newInstance(systemProp); | |
| 44 } | |
| 45 | |
| 46 String providerName = findJarServiceProviderName(factoryId); | |
| 47 if (providerName != null && providerName.trim().length() > 0) { | |
| 48 return newInstance(providerName); | |
| 49 } | |
| 50 | |
| 51 return null; | |
| 52 } | |
| 53 | |
| 54 static Object newInstance(String className) throws ClassNotFoundException, | |
| 55 InstantiationException, IllegalAccessException { | |
| 56 Class providerClass = cl.loadClass(className); | |
| 57 Object instance = providerClass.newInstance(); | |
| 58 return instance; | |
| 59 } | |
| 60 | |
| 61 private static String findJarServiceProviderName(String factoryId) { | |
| 62 String serviceId = "META-INF/services/" + factoryId; | |
| 63 InputStream is; | |
| 64 is = cl.getResourceAsStream(serviceId); | |
| 65 | |
| 66 if (is == null) { | |
| 67 return null; | |
| 68 } | |
| 69 | |
| 70 String factoryClassName; | |
| 71 BufferedReader rd = null; | |
| 72 try { | |
| 73 try { | |
| 74 rd = new BufferedReader(new InputStreamReader(is, "UTF-8")); | |
| 75 } catch (java.io.UnsupportedEncodingException e) { | |
| 76 rd = new BufferedReader(new InputStreamReader(is)); | |
| 77 } | |
| 78 try { | |
| 79 factoryClassName = rd.readLine(); | |
| 80 } catch (IOException x) { | |
| 81 return null; | |
| 82 } | |
| 83 } finally { | |
| 84 if (rd != null) { | |
| 85 try { | |
| 86 rd.close(); | |
| 87 } catch (IOException ex) { | |
| 88 Logger.getLogger(FactoryFinder.class.getName()).log(Level.INFO, null, ex); | |
| 89 } | |
| 90 } | |
| 91 } | |
| 92 | |
| 93 return factoryClassName; | |
| 94 } | |
| 95 | |
| 96 } |
