/*
 * Copyright (c) 2015, 2017, 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.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * 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.
 */

package jdk.internal.module;

import java.lang.module.Configuration;
import java.lang.module.ResolvedModule;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.function.Function;

import jdk.internal.loader.ClassLoaders;


Supports the mapping of modules to class loaders. The set of modules mapped to the boot and platform class loaders is generated at build time from this source file.
/** * Supports the mapping of modules to class loaders. The set of modules mapped * to the boot and platform class loaders is generated at build time from * this source file. */
public final class ModuleLoaderMap {
Maps the system modules to the built-in class loaders.
/** * Maps the system modules to the built-in class loaders. */
public static final class Mapper implements Function<String, ClassLoader> { private final Map<String, ClassLoader> map; Mapper(Map<String, ClassLoader> map) { this.map = map; // defensive copy not needed } @Override public ClassLoader apply(String name) { return map.get(name); } }
Returns the names of the modules defined to the boot loader.
/** * Returns the names of the modules defined to the boot loader. */
public static Set<String> bootModules() { // The list of boot modules generated at build time. String[] BOOT_MODULES = new String[] { "java.base", "java.datatransfer", "java.desktop", "java.instrument", "java.logging", "java.management", "java.management.rmi", "java.naming", "java.prefs", "java.rmi", "java.security.sasl", "java.xml", "jdk.incubator.foreign", "jdk.internal.vm.ci", "jdk.jfr", "jdk.management", "jdk.management.agent", "jdk.management.jfr", "jdk.naming.rmi", "jdk.net", "jdk.nio.mapmode", "jdk.sctp", "jdk.unsupported" }; Set<String> bootModules = new HashSet<>(BOOT_MODULES.length); for (String mn : BOOT_MODULES) { bootModules.add(mn); } return bootModules; }
Returns the names of the modules defined to the platform loader.
/** * Returns the names of the modules defined to the platform loader. */
public static Set<String> platformModules() { // The list of platform modules generated at build time. String[] PLATFORM_MODULES = new String[] { "java.compiler", "java.net.http", "java.scripting", "java.se", "java.security.jgss", "java.smartcardio", "java.sql", "java.sql.rowset", "java.transaction.xa", "java.xml.crypto", "jdk.accessibility", "jdk.aot", "jdk.charsets", "jdk.crypto.cryptoki", "jdk.crypto.ec", "jdk.dynalink", "jdk.httpserver", "jdk.internal.vm.compiler", "jdk.internal.vm.compiler.management", "jdk.jsobject", "jdk.localedata", "jdk.naming.dns", "jdk.scripting.nashorn", "jdk.security.auth", "jdk.security.jgss", "jdk.xml.dom", "jdk.zipfs" }; Set<String> platformModules = new HashSet<>(PLATFORM_MODULES.length); for (String mn : PLATFORM_MODULES) { platformModules.add(mn); } return platformModules; }
Returns the function to map modules in the given configuration to the built-in class loaders.
/** * Returns the function to map modules in the given configuration to the * built-in class loaders. */
static Function<String, ClassLoader> mappingFunction(Configuration cf) { Set<String> bootModules = bootModules(); Set<String> platformModules = platformModules(); ClassLoader platformClassLoader = ClassLoaders.platformClassLoader(); ClassLoader appClassLoader = ClassLoaders.appClassLoader(); Map<String, ClassLoader> map = new HashMap<>(); for (ResolvedModule resolvedModule : cf.modules()) { String mn = resolvedModule.name(); if (!bootModules.contains(mn)) { if (platformModules.contains(mn)) { map.put(mn, platformClassLoader); } else { map.put(mn, appClassLoader); } } } return new Mapper(map); } }