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 

    26 package jdk.tools.jlink.internal;

    27 

    28 import jdk.tools.jlink.plugin.ResourcePoolEntry;

    29 

    30 import java.io.InputStream;

    31 import java.util.Objects;

    32 

    33 /**

    34  * A symbolic link ResourcePoolEntry.  It will be created in the image

    35  * as a symbolic link to the target when the target platform supports

    36  * symbolic links; otherwise, it will create a file containing the

    37  * path to the target file.

    38  */

    39 public class SymLinkResourcePoolEntry extends AbstractResourcePoolEntry {

    40     private final ResourcePoolEntry target;

    41 

    42     /**

    43      * Create a new SymLinkResourcePoolEntry.

    44      *

    45      * @param module The module name.

    46      * @param path   The path for the resource content.

    47      * @param type   The data type.

    48      * @param target Target entry in the image

    49      */

    50     public SymLinkResourcePoolEntry(String module,

    51                                     String path,

    52                                     ResourcePoolEntry.Type type,

    53                                     ResourcePoolEntry target) {

    54         super(module, path, type);

    55         this.target = Objects.requireNonNull(target);

    56     }

    57 

    58     @Override

    59     public long contentLength() {

    60         return target.contentLength();

    61     }

    62 

    63     @Override

    64     public InputStream content() {

    65         return target.content();

    66     }

    67 

    68     @Override

    69     public ResourcePoolEntry linkedTarget() {

    70         return target;

    71     }

    72 }