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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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.
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 * 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,
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package jdk.internal.loader;

import java.lang.module.Configuration;
import java.lang.module.ResolvedModule;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Stream;

A pool of class loaders.
See Also:
defineModulesWithManyLoaders.defineModulesWithManyLoaders/**
 * A pool of class loaders.
 *
 * @see ModuleLayer#defineModulesWithManyLoaders
 */

public final class LoaderPool {

    // maps module names to class loaders
    private final Map<String, Loader> loaders;


    
Creates a pool of class loaders. Each module in the given configuration
will be loaded its own class loader in the pool. The class loader is
created with the given parent class loader as its parent.
/**
     * Creates a pool of class loaders. Each module in the given configuration
     * will be loaded its own class loader in the pool. The class loader is
     * created with the given parent class loader as its parent.
     */
    public LoaderPool(Configuration cf,
                      List<ModuleLayer> parentLayers,
                      ClassLoader parentLoader)
    {
        Map<String, Loader> loaders = new HashMap<>();
        for (ResolvedModule resolvedModule : cf.modules()) {
            Loader loader = new Loader(resolvedModule, this, parentLoader);
            String mn = resolvedModule.name();
            loaders.put(mn, loader);
        }
        this.loaders = loaders;

        // complete the initialization
        loaders.values().forEach(l -> l.initRemotePackageMap(cf, parentLayers));
    }


    
Returns the class loader for the named module
/**
     * Returns the class loader for the named module
     */
    public Loader loaderFor(String name) {
        Loader loader = loaders.get(name);
        assert loader != null;
        return loader;
    }

    
Returns a stream of the loaders in this pool.
/**
     * Returns a stream of the loaders in this pool.
     */
    public Stream<Loader> loaders() {
        return loaders.values().stream();
    }

}