1 /*

     2  * Copyright (c) 2019, 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  * published by the Free Software Foundation.  Oracle designates this

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

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

     9  *

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

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

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

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

    14  * accompanied this code).

    15  *

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

    17  * 2 along with this work; if not, write to the Free Software Foundation,

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

    19  *

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

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

    22  * questions.

    23  */

    24 

    25 package jdk.incubator.jpackage;

    26 

    27 import jdk.incubator.jpackage.internal.JPackageToolProvider;

    28 import java.io.PrintWriter;

    29 import java.util.Optional;

    30 import java.util.spi.ToolProvider;

    31 

    32 /**

    33  * A factory class to obtain a {@linkplain ToolProvider tool provider}

    34  * for the incubating {@code jpackage} tool.

    35  * 

    36  * It is planned to implement {@code jpackage} tool as a service provider

    37  * to {@link ToolProvider} in a future release at which point

    38  * {@link ToolProvider#findFirst} can be used to look up jpackage tool.

    39  *

    40  * @since   14

    41  */

    42 

    43 public class ToolProviderFactory { 

    44 

    45     private static ToolProvider provider = new JPackageToolProvider();

    46 

    47     // Prevent creating an instance of this class

    48     private ToolProviderFactory() {

    49     }

    50 

    51     /**

    52      * Returns an {@link Optional} containing the {@code ToolProvider}

    53      * if the given toolname is "jpackage". Returns an empty

    54      * {@code Optional} if the given toolname is not "jpackage".

    55      *

    56      * @param   toolname {@code String} name of tool to look for.

    57      * @return  an {@link Optional} containing the {@code ToolPovider}

    58      *

    59      * @since 14

    60      */

    61     public static Optional<ToolProvider> findFirst(String toolName) {

    62         if ("jpackage".equals(toolName)) {

    63             return Optional.of(provider);

    64         } else {

    65             return Optional.empty();

    66         }

    67     } 

    68 

    69 }