1 /*

     2  * Copyright (c) 2016, 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.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 package jdk.tools.jlink.plugin;

    26 

    27 import java.util.Objects;

    28 import java.util.Optional;

    29 import java.util.stream.Stream;

    30 

    31 /**

    32  * The module view of a ResourcePool.

    33  */

    34 public interface ResourcePoolModuleView {

    35     /**

    36      * Find the module, if any, of the given name.

    37      *

    38      * @param name name of the module

    39      * @return Optional containing the module of the given name.

    40      */

    41     public Optional<ResourcePoolModule> findModule(String name);

    42 

    43     /**

    44      * Find the module, if any, of the given ResourcePoolEntry

    45      *

    46      * @param entry The ResourcePoolEntry whose module is looked up.

    47      * @return Optional containing the module of the given ResourcePoolEntry

    48      */

    49     public default Optional<ResourcePoolModule> findModule(ResourcePoolEntry entry) {

    50         String name = Objects.requireNonNull(entry).moduleName();

    51         return name != null? findModule(name) : Optional.empty();

    52     }

    53 

    54     /**

    55      * The stream of modules contained in this ResourcePool.

    56      *

    57      * @return The stream of modules.

    58      */

    59     public Stream<ResourcePoolModule> modules();

    60 

    61     /**

    62      * Return the number of ResourcePoolModule count in this ResourcePool.

    63      *

    64      * @return the module count.

    65      */

    66     public int moduleCount();

    67 }