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1   /*
2    * Copyright (C) 2010, 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.file;
45  
46  import java.io.File;
47  import java.io.IOException;
48  import java.util.Collection;
49  import java.util.Set;
50  
51  import org.eclipse.jgit.internal.storage.pack.ObjectToPack;
52  import org.eclipse.jgit.internal.storage.pack.PackWriter;
53  import org.eclipse.jgit.lib.AbbreviatedObjectId;
54  import org.eclipse.jgit.lib.AnyObjectId;
55  import org.eclipse.jgit.lib.Config;
56  import org.eclipse.jgit.lib.ObjectDatabase;
57  import org.eclipse.jgit.lib.ObjectId;
58  import org.eclipse.jgit.lib.ObjectLoader;
59  import org.eclipse.jgit.lib.ObjectReader;
60  import org.eclipse.jgit.util.FS;
61  
62  abstract class FileObjectDatabase extends ObjectDatabase {
63  	static enum InsertLooseObjectResult {
64  		INSERTED, EXISTS_PACKED, EXISTS_LOOSE, FAILURE;
65  	}
66  
67  	@Override
68  	public ObjectReader newReader() {
69  		return new WindowCursor(this);
70  	}
71  
72  	@Override
73  	public ObjectDirectoryInserter newInserter() {
74  		return new ObjectDirectoryInserter(this, getConfig());
75  	}
76  
77  	abstract void resolve(Set<ObjectId> matches, AbbreviatedObjectId id)
78  			throws IOException;
79  
80  	abstract Config getConfig();
81  
82  	abstract FS getFS();
83  
84  	abstract Set<ObjectId> getShallowCommits() throws IOException;
85  
86  	abstract void selectObjectRepresentation(PackWriter packer,
87  			ObjectToPack otp, WindowCursor curs) throws IOException;
88  
89  	abstract File getDirectory();
90  
91  	abstract File fileFor(AnyObjectId id);
92  
93  	abstract ObjectLoader openObject(WindowCursor curs, AnyObjectId objectId)
94  			throws IOException;
95  
96  	abstract long getObjectSize(WindowCursor curs, AnyObjectId objectId)
97  			throws IOException;
98  
99  	abstract ObjectLoader openLooseObject(WindowCursor curs, AnyObjectId id)
100 			throws IOException;
101 
102 	abstract InsertLooseObjectResult insertUnpackedObject(File tmp,
103 			ObjectId id, boolean createDuplicate) throws IOException;
104 
105 	abstract PackFile openPack(File pack) throws IOException;
106 
107 	abstract Collection<PackFile> getPacks();
108 }