1 /*
2 * Copyright (C) 2011, Google Inc.
3 * and other copyright owners as documented in the project's IP log.
4 *
5 * This program and the accompanying materials are made available
6 * under the terms of the Eclipse Distribution License v1.0 which
7 * accompanies this distribution, is reproduced below, and is
8 * available at http://www.eclipse.org/org/documents/edl-v10.php
9 *
10 * All rights reserved.
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 *
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials provided
22 * with the distribution.
23 *
24 * - Neither the name of the Eclipse Foundation, Inc. nor the
25 * names of its contributors may be used to endorse or promote
26 * products derived from this software without specific prior
27 * written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
30 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
31 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
32 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
33 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
34 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
35 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
36 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
37 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
38 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
40 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
41 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
42 */
43
44 package org.eclipse.jgit.internal.storage.dfs;
45
46 import java.io.IOException;
47 import java.text.MessageFormat;
48
49 import org.eclipse.jgit.internal.JGitText;
50 import org.eclipse.jgit.lib.Constants;
51 import org.eclipse.jgit.lib.RefUpdate;
52 import org.eclipse.jgit.lib.ReflogReader;
53 import org.eclipse.jgit.lib.Repository;
54 import org.eclipse.jgit.lib.StoredConfig;
55
56 /** A Git repository on a DFS. */
57 public abstract class DfsRepository extends Repository {
58 private final DfsConfig config;
59
60 private final DfsRepositoryDescription description;
61
62 /**
63 * Initialize a DFS repository.
64 *
65 * @param builder
66 * description of the repository.
67 */
68 protected DfsRepository(DfsRepositoryBuilder builder) {
69 super(builder);
70 this.config = new DfsConfig();
71 this.description = builder.getRepositoryDescription();
72 }
73
74 @Override
75 public abstract DfsObjDatabase getObjectDatabase();
76
77 @Override
78 public abstract DfsRefDatabase getRefDatabase();
79
80 /** @return a description of this repository. */
81 public DfsRepositoryDescription getDescription() {
82 return description;
83 }
84
85 /**
86 * Check if the repository already exists.
87 *
88 * @return true if the repository exists; false if it is new.
89 * @throws IOException
90 * the repository cannot be checked.
91 */
92 public boolean exists() throws IOException {
93 return getRefDatabase().exists();
94 }
95
96 @Override
97 public void create(boolean bare) throws IOException {
98 if (exists())
99 throw new IOException(MessageFormat.format(
100 JGitText.get().repositoryAlreadyExists, "")); //$NON-NLS-1$
101
102 String master = Constants.R_HEADS + Constants.MASTER;
103 RefUpdate.Result result = updateRef(Constants.HEAD, true).link(master);
104 if (result != RefUpdate.Result.NEW)
105 throw new IOException(result.name());
106 }
107
108 @Override
109 public StoredConfig getConfig() {
110 return config;
111 }
112
113 @Override
114 public void scanForRepoChanges() throws IOException {
115 getRefDatabase().clearCache();
116 getObjectDatabase().clearCache();
117 }
118
119 @Override
120 public void notifyIndexChanged() {
121 // Do not send notifications.
122 // There is no index, as there is no working tree.
123 }
124
125 @Override
126 public ReflogReader getReflogReader(String refName) throws IOException {
127 throw new UnsupportedOperationException();
128 }
129 }