1/*
2 * Copyright (c) 2014, 2015, 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.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24import java.io.IOException;
25import java.lang.module.ModuleReference;
26import java.lang.module.ModuleFinder;
27import java.lang.module.ModuleDescriptor;
28import java.lang.module.ModuleReader;
29import java.net.URI;
30import java.util.HashMap;
31import java.util.HashSet;
32import java.util.Map;
33import java.util.Optional;
34import java.util.Set;
35
36/**
37 * A container of modules that acts as a ModuleFinder for testing
38 * purposes.
39 */
40
41class ModuleLibrary implements ModuleFinder {
42    private final Map<String, ModuleReference> namesToReference = new HashMap<>();
43
44    private ModuleLibrary() { }
45
46    void add(ModuleDescriptor... descriptors) {
47        for (ModuleDescriptor descriptor: descriptors) {
48            String name = descriptor.name();
49            if (!namesToReference.containsKey(name)) {
50                //modules.add(descriptor);
51
52                URI uri = URI.create("module:/" + descriptor.name());
53
54                ModuleReference mref = new ModuleReference(descriptor, uri) {
55                    @Override
56                    public ModuleReader open() {
57                        throw new UnsupportedOperationException();
58                    }
59                };
60
61                namesToReference.put(name, mref);
62            }
63        }
64    }
65
66    static ModuleLibrary of(ModuleDescriptor... descriptors) {
67        ModuleLibrary ml = new ModuleLibrary();
68        ml.add(descriptors);
69        return ml;
70    }
71
72    @Override
73    public Optional<ModuleReference> find(String name) {
74        return Optional.ofNullable(namesToReference.get(name));
75    }
76
77    @Override
78    public Set<ModuleReference> findAll() {
79        return new HashSet<>(namesToReference.values());
80    }
81}
82
83