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
48 import org.eclipse.jgit.internal.storage.pack.CachedPack;
49 import org.eclipse.jgit.internal.storage.pack.ObjectToPack;
50 import org.eclipse.jgit.internal.storage.pack.PackOutputStream;
51 import org.eclipse.jgit.internal.storage.pack.StoredObjectRepresentation;
52
53 /**
54 * A DfsPackFile available for reuse as-is.
55 */
56 public class DfsCachedPack extends CachedPack {
57 private final DfsPackFile pack;
58
59 DfsCachedPack(DfsPackFile pack) {
60 this.pack = pack;
61 }
62
63 /**
64 * @return the pack passed to the constructor
65 */
66 public DfsPackFile getPackFile() {
67 return pack;
68 }
69
70 /**
71 * Get the description of the pack.
72 *
73 * @return the description of the pack.
74 */
75 public DfsPackDescription getPackDescription() {
76 return pack.getPackDescription();
77 }
78
79 /** {@inheritDoc} */
80 @Override
81 public long getObjectCount() throws IOException {
82 return getPackDescription().getObjectCount();
83 }
84
85 /** {@inheritDoc} */
86 @Override
87 public long getDeltaCount() throws IOException {
88 return getPackDescription().getDeltaCount();
89 }
90
91 /** {@inheritDoc} */
92 @Override
93 public boolean hasObject(ObjectToPack obj, StoredObjectRepresentation rep) {
94 return ((DfsObjectRepresentation) rep).pack == pack;
95 }
96
97 void copyAsIs(PackOutputStream out, DfsReader ctx) throws IOException {
98 pack.copyPackAsIs(out, ctx);
99 }
100 }