author | alanb |
Thu, 01 Dec 2016 08:57:53 +0000 | |
changeset 42338 | a60f280f803c |
parent 36511 | 9d0388c6b336 |
child 44545 | 83b611b88ac8 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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||
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import java.io.InputStream; |
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import java.lang.module.Configuration; |
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import java.lang.module.ResolvedModule; |
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import java.lang.reflect.Layer; |
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import java.io.IOException; |
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import java.net.URL; |
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import java.nio.file.Files; |
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import java.nio.file.Path; |
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import java.nio.file.Paths; |
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import java.util.ArrayList; |
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import java.util.Enumeration; |
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import java.util.List; |
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/** |
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* Basic test of ClassLoader getResource and getResourceAsStream when |
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* invoked from code in named modules. |
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*/ |
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public class Main { |
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static final String NAME = "myresource"; |
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public static void main(String[] args) throws IOException { |
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// create resources in m1 |
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createResource("m1", Paths.get("."), "m1"); |
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createResource("m1", Paths.get("p1"), "m1/p1"); |
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createResource("m1", Paths.get("p1", "impl"), "m1/p1.impl"); |
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createResource("m1", Paths.get("p1", "resources"), "m1/p1.resources"); |
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// create resources in m2 |
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createResource("m2", Paths.get("."), "m2"); |
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createResource("m2", Paths.get("p2"), "m2/p2"); |
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createResource("m2", Paths.get("p2", "impl"), "m2/p2.impl"); |
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createResource("m2", Paths.get("p2", "resources"), "m2/p2.resources"); |
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// invoke ClassLoader getResource from the unnamed module |
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ClassLoader thisLoader = Main.class.getClassLoader(); |
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URL url = thisLoader.getResource(NAME); |
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assertNotNull(url); |
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url = thisLoader.getResource("p1/" + NAME); |
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assertNull(url); |
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url = thisLoader.getResource("p1/impl/" + NAME); |
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assertNull(url); |
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url = thisLoader.getResource("p1/resources/" + NAME); |
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assertEquals(readAllAsString(url), "m1/p1.resources"); |
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url = thisLoader.getResource("p2/" + NAME); |
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assertNull(url); |
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url = thisLoader.getResource("p2/impl/" + NAME); |
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assertNull(url); |
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url = thisLoader.getResource("p2/resources/" + NAME); |
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assertNull(url); |
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// invoke ClassLoader getResource from module m1 |
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url = p1.Main.getResourceInClassLoader(NAME); |
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assertNotNull(url); |
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url = p1.Main.getResourceInClassLoader("p1/" + NAME); |
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assertNull(url); |
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url = p1.Main.getResourceInClassLoader("p1/impl/" + NAME); |
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assertNull(url); |
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url = p1.Main.getResourceInClassLoader("p1/resources/" + NAME); |
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assertEquals(readAllAsString(url), "m1/p1.resources"); |
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url = p1.Main.getResourceInClassLoader("p2/" + NAME); |
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assertNull(url); |
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url = p1.Main.getResourceInClassLoader("p2/impl/" + NAME); |
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assertNull(url); |
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url = p1.Main.getResourceInClassLoader("p2/resources/" + NAME); |
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assertNull(url); |
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// invoke ClassLoader getResource from module m2 |
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url = p2.Main.getResourceInClassLoader(NAME); |
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assertNotNull(url); |
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url = p2.Main.getResourceInClassLoader("p1/" + NAME); |
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assertNull(url); |
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url = p2.Main.getResourceInClassLoader("p1/impl/" + NAME); |
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assertNull(url); |
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url = p2.Main.getResourceInClassLoader("p1/resources/" + NAME); |
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assertEquals(readAllAsString(url), "m1/p1.resources"); |
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url = p2.Main.getResourceInClassLoader("p2/" + NAME); |
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assertNull(url); |
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url = p2.Main.getResourceInClassLoader("p2/impl/" + NAME); |
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assertNull(url); |
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url = p2.Main.getResourceInClassLoader("p2/resources/" + NAME); |
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assertNull(url); |
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// invoke ClassLoader getResources from the unnamed module |
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Enumeration<URL> urls = thisLoader.getResources(NAME); |
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List<String> resources = readAllAsStrings(urls); |
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assertTrue(resources.size() == 2); |
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assertTrue(resources.contains("m1")); |
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assertTrue(resources.contains("m2")); |
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urls = thisLoader.getResources("p1/" + NAME); |
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assertTrue(readAllAsStrings(urls).isEmpty()); |
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urls = thisLoader.getResources("p1/impl/" + NAME); |
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assertTrue(readAllAsStrings(urls).isEmpty()); |
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urls = thisLoader.getResources("p1/resources/" + NAME); |
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resources = readAllAsStrings(urls); |
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assertTrue(resources.size() == 1); |
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assertTrue(resources.contains("m1/p1.resources")); |
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urls = thisLoader.getResources("p2/" + NAME); |
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assertTrue(readAllAsStrings(urls).isEmpty()); |
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urls = thisLoader.getResources("p2/impl/" + NAME); |
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assertTrue(readAllAsStrings(urls).isEmpty()); |
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urls = thisLoader.getResources("p2/resources/" + NAME); |
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assertTrue(readAllAsStrings(urls).isEmpty()); |
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// invoke ClassLoader getResources from m1 |
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urls = p1.Main.getResourcesInClassLoader(NAME); |
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resources = readAllAsStrings(urls); |
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assertTrue(resources.size() == 2); |
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assertTrue(resources.contains("m1")); |
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assertTrue(resources.contains("m2")); |
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166 |
|
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urls = p1.Main.getResourcesInClassLoader("p1/" + NAME); |
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assertTrue(readAllAsStrings(urls).isEmpty()); |
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169 |
|
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urls = p1.Main.getResourcesInClassLoader("p1/impl/" + NAME); |
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assertTrue(readAllAsStrings(urls).isEmpty()); |
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urls = p1.Main.getResourcesInClassLoader("p1/resources/" + NAME); |
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resources = readAllAsStrings(urls); |
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assertTrue(resources.size() == 1); |
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assertTrue(resources.contains("m1/p1.resources")); |
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urls = p1.Main.getResourcesInClassLoader("p2/" + NAME); |
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assertTrue(readAllAsStrings(urls).isEmpty()); |
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|
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urls = p1.Main.getResourcesInClassLoader("p2/impl/" + NAME); |
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assertTrue(readAllAsStrings(urls).isEmpty()); |
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183 |
|
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urls = p1.Main.getResourcesInClassLoader("p2/resources/" + NAME); |
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assertTrue(readAllAsStrings(urls).isEmpty()); |
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186 |
|
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187 |
|
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// invoke ClassLoader getResources from m2 |
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urls = p2.Main.getResourcesInClassLoader(NAME); |
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resources = readAllAsStrings(urls); |
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assertTrue(resources.size() == 2); |
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assertTrue(resources.contains("m1")); |
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assertTrue(resources.contains("m2")); |
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194 |
|
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urls = p2.Main.getResourcesInClassLoader("p1/" + NAME); |
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assertTrue(readAllAsStrings(urls).isEmpty()); |
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197 |
|
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urls = p2.Main.getResourcesInClassLoader("p1/impl/" + NAME); |
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assertTrue(readAllAsStrings(urls).isEmpty()); |
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|
200 |
|
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urls = p2.Main.getResourcesInClassLoader("p1/resources/" + NAME); |
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resources = readAllAsStrings(urls); |
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assertTrue(resources.size() == 1); |
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assertTrue(resources.contains("m1/p1.resources")); |
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205 |
|
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urls = p2.Main.getResourcesInClassLoader("p2/" + NAME); |
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assertTrue(readAllAsStrings(urls).isEmpty()); |
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208 |
|
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urls = p2.Main.getResourcesInClassLoader("p2/impl/" + NAME); |
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assertTrue(readAllAsStrings(urls).isEmpty()); |
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|
211 |
|
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urls = p2.Main.getResourcesInClassLoader("p2/resources/" + NAME); |
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213 |
assertTrue(readAllAsStrings(urls).isEmpty()); |
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|
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|
216 |
// invoke ClassLoader getResourceAsStream from the unnamed module |
|
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InputStream in = thisLoader.getResourceAsStream(NAME); |
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assertNotNull(in); |
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219 |
|
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in = thisLoader.getResourceAsStream("p1/" + NAME); |
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221 |
assertNull(in); |
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|
222 |
|
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in = thisLoader.getResourceAsStream("p1/impl/" + NAME); |
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224 |
assertNull(in); |
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225 |
|
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in = thisLoader.getResourceAsStream("p1/resources/" + NAME); |
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assertEquals(readAllAsString(in), "m1/p1.resources"); |
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228 |
|
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in = thisLoader.getResourceAsStream("p2/" + NAME); |
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230 |
assertNull(in); |
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231 |
|
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in = thisLoader.getResourceAsStream("p2/impl/" + NAME); |
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233 |
assertNull(in); |
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|
234 |
|
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235 |
in = thisLoader.getResourceAsStream("p2/resources/" + NAME); |
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236 |
assertNull(in); |
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|
237 |
|
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|
238 |
|
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239 |
// invoke ClassLoader getResource from modules m1 |
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240 |
in = p1.Main.getResourceAsStreamInClassLoader(NAME); |
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241 |
assertNotNull(in); |
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|
242 |
|
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243 |
in = p1.Main.getResourceAsStreamInClassLoader("p1/" + NAME); |
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244 |
assertNull(in); |
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|
245 |
|
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246 |
in = p1.Main.getResourceAsStreamInClassLoader("p1/impl/" + NAME); |
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247 |
assertNull(in); |
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|
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249 |
in = p1.Main.getResourceAsStreamInClassLoader("p1/resources/" + NAME); |
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250 |
assertEquals(readAllAsString(in), "m1/p1.resources"); |
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251 |
|
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252 |
in = p1.Main.getResourceAsStreamInClassLoader("p2/" + NAME); |
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253 |
assertNull(in); |
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|
254 |
|
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255 |
in = p1.Main.getResourceAsStreamInClassLoader("p2/impl/" + NAME); |
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256 |
assertNull(in); |
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|
257 |
|
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258 |
in = p1.Main.getResourceAsStreamInClassLoader("p2/resources/" + NAME); |
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259 |
assertNull(in); |
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260 |
|
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|
261 |
|
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262 |
// invoke ClassLoader getResource from modules m2 |
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263 |
in = p2.Main.getResourceAsStreamInClassLoader(NAME); |
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|
264 |
assertNotNull(in); |
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|
265 |
|
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266 |
in = p2.Main.getResourceAsStreamInClassLoader("p1/" + NAME); |
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|
267 |
assertNull(in); |
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|
268 |
|
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269 |
in = p2.Main.getResourceAsStreamInClassLoader("p1/impl/" + NAME); |
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270 |
assertNull(in); |
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271 |
|
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272 |
in = p2.Main.getResourceAsStreamInClassLoader("p1/resources/" + NAME); |
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273 |
assertEquals(readAllAsString(in), "m1/p1.resources"); |
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274 |
|
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275 |
in = p2.Main.getResourceAsStreamInClassLoader("p2/" + NAME); |
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276 |
assertNull(in); |
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|
277 |
|
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278 |
in = p2.Main.getResourceAsStreamInClassLoader("p2/impl/" + NAME); |
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|
279 |
assertNull(in); |
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|
280 |
|
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281 |
in = p2.Main.getResourceAsStreamInClassLoader("p2/resources/" + NAME); |
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|
282 |
assertNull(in); |
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|
283 |
|
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|
285 |
// SecurityManager case |
|
286 |
System.setSecurityManager(new SecurityManager()); |
|
287 |
||
288 |
assertNull(Main.class.getClassLoader().getResource("/" + NAME)); |
|
289 |
assertNull(p1.Main.getResourceInClassLoader("/" + NAME)); |
|
290 |
assertNull(p2.Main.getResourceInClassLoader("/" + NAME)); |
|
291 |
||
292 |
assertNull(Main.class.getClassLoader().getResourceAsStream("/" + NAME)); |
|
293 |
assertNull(p1.Main.getResourceAsStreamInClassLoader("/" + NAME)); |
|
294 |
assertNull(p2.Main.getResourceAsStreamInClassLoader("/" + NAME)); |
|
295 |
||
296 |
System.out.println("Success!"); |
|
297 |
} |
|
298 |
||
299 |
/** |
|
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300 |
* Create a resource in the sub-directory of the given exploded module |
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301 |
*/ |
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302 |
static void createResource(String mn, Path subdir, String msg) throws IOException { |
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303 |
Path dir = directoryFor(mn).resolve(subdir); |
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304 |
Path file = dir.resolve(NAME); |
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|
305 |
Files.write(file, msg.getBytes("UTF-8")); |
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|
306 |
} |
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|
307 |
|
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/** |
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* Returns the directory for the given module (by name). |
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*/ |
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static Path directoryFor(String mn) { |
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Configuration cf = Layer.boot().configuration(); |
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ResolvedModule resolvedModule = cf.findModule(mn).orElse(null); |
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if (resolvedModule == null) |
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throw new RuntimeException("not found: " + mn); |
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Path dir = Paths.get(resolvedModule.reference().location().get()); |
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if (!Files.isDirectory(dir)) |
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throw new RuntimeException("not a directory: " + dir); |
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return dir; |
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} |
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static String readAllAsString(InputStream in) throws IOException { |
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if (in == null) |
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return null; |
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try (in) { |
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return new String(in.readAllBytes(), "UTF-8"); |
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} |
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} |
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|
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static String readAllAsString(URL url) throws IOException { |
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if (url == null) |
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return null; |
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InputStream in = url.openStream(); |
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return readAllAsString(url.openStream()); |
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} |
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|
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static List<String> readAllAsStrings(Enumeration<URL> urls) throws IOException { |
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List<String> result = new ArrayList<>(); |
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while (urls.hasMoreElements()) { |
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URL url = urls.nextElement(); |
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result.add(readAllAsString(url)); |
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} |
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return result; |
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} |
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static void assertTrue(boolean condition) { |
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if (!condition) throw new RuntimeException(); |
|
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} |
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static void assertFalse(boolean condition) { |
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if (condition) throw new RuntimeException(); |
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} |
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static void assertNull(Object o) { |
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assertTrue(o == null); |
|
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} |
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|
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static void assertNotNull(Object o) { |
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assertTrue(o != null); |
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} |
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|
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static void assertEquals(Object actual, Object expected) { |
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if (expected == null) { |
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assertNull(actual); |
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} else { |
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assertTrue(expected.equals(actual)); |
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} |
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} |
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|
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static void assertNotEquals(Object actual, Object expected) { |
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if (expected == null) { |
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assertNotNull(actual); |
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} else { |
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assertTrue(!expected.equals(actual)); |
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} |
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} |
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} |
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