1 /*
2 * Copyright (C) 2009, Google Inc.
3 * Copyright (C) 2008, Marek Zawirski <marek.zawirski@gmail.com>
4 * Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org>
5 * and other copyright owners as documented in the project's IP log.
6 *
7 * This program and the accompanying materials are made available
8 * under the terms of the Eclipse Distribution License v1.0 which
9 * accompanies this distribution, is reproduced below, and is
10 * available at http://www.eclipse.org/org/documents/edl-v10.php
11 *
12 * All rights reserved.
13 *
14 * Redistribution and use in source and binary forms, with or
15 * without modification, are permitted provided that the following
16 * conditions are met:
17 *
18 * - Redistributions of source code must retain the above copyright
19 * notice, this list of conditions and the following disclaimer.
20 *
21 * - Redistributions in binary form must reproduce the above
22 * copyright notice, this list of conditions and the following
23 * disclaimer in the documentation and/or other materials provided
24 * with the distribution.
25 *
26 * - Neither the name of the Eclipse Foundation, Inc. nor the
27 * names of its contributors may be used to endorse or promote
28 * products derived from this software without specific prior
29 * written permission.
30 *
31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
32 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
33 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
34 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
35 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
36 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
37 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
38 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
39 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
40 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
41 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
42 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
43 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
44 */
45
46 package org.eclipse.jgit.revwalk;
47
48 import java.io.IOException;
49
50 import org.eclipse.jgit.errors.IncorrectObjectTypeException;
51 import org.eclipse.jgit.errors.MissingObjectException;
52 import org.eclipse.jgit.lib.AnyObjectId;
53 import org.eclipse.jgit.lib.Constants;
54
55 /**
56 * A reference to a tree of subtrees/files.
57 */
58 public class RevTree extends RevObject {
59 /**
60 * Create a new tree reference.
61 *
62 * @param id
63 * object name for the tree.
64 */
65 protected RevTree(AnyObjectId id) {
66 super(id);
67 }
68
69 /** {@inheritDoc} */
70 @Override
71 public final int getType() {
72 return Constants.OBJ_TREE;
73 }
74
75 @Override
76 void parseHeaders(RevWalk walk) throws MissingObjectException,
77 IncorrectObjectTypeException, IOException {
78 if (walk.reader.has(this))
79 flags |= PARSED;
80 else
81 throw new MissingObjectException(this, getType());
82 }
83
84 @Override
85 void parseBody(RevWalk walk) throws MissingObjectException,
86 IncorrectObjectTypeException, IOException {
87 if ((flags & PARSED) == 0)
88 parseHeaders(walk);
89 }
90 }