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/*
* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
import java.lang.module.Configuration;
import java.lang.module.ModuleFinder;
import java.lang.reflect.Method;
import java.net.URL;
import java.net.URLClassLoader;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Set;
public class TestLayer {
private static final Path MODS_DIR = Paths.get("mods");
private static final Set<String> modules = Set.of("m1", "m2");
public static void main(String[] args) throws Exception {
// disable security manager until Class.forName is called.
SecurityManager sm = System.getSecurityManager();
if (sm != null) {
System.setSecurityManager(null);
}
ModuleFinder finder = ModuleFinder.of(MODS_DIR);
Configuration parent = ModuleLayer.boot().configuration();
Configuration cf = parent.resolveAndBind(ModuleFinder.of(),
finder,
modules);
ClassLoader scl = ClassLoader.getSystemClassLoader();
ModuleLayer layer = ModuleLayer.boot().defineModulesWithManyLoaders(cf, scl);
Module m1 = layer.findModule("m1").get();
Module m2 = layer.findModule("m2").get();
if (sm != null) {
System.setSecurityManager(sm);
}
// find exported and non-exported class from a named module
findClass(m1, "p1.A");
findClass(m1, "p1.internal.B");
findClass(m2, "p2.C");
// find class from unnamed module
ClassLoader ld = TestLayer.class.getClassLoader();
findClass(ld.getUnnamedModule(), "TestDriver");
// check if clinit should not be initialized
// compile without module-path; so use reflection
Class<?> c = Class.forName(m1, "p1.Initializer");
Method m = c.getMethod("isInited");
Boolean isClinited = (Boolean) m.invoke(null);
if (isClinited.booleanValue()) {
throw new RuntimeException("clinit should not be invoked");
}
}
static Class<?> findClass(Module module, String cn) {
Class<?> c = Class.forName(module, cn);
if (c == null) {
throw new RuntimeException(cn + " not found in " + module);
}
if (c.getModule() != module) {
throw new RuntimeException(c.getModule() + " != " + module);
}
return c;
}
}
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