1 /**
2 * Copyright (c) 2011, University of Konstanz, Distributed Systems Group
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of the University of Konstanz nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 package org.treetank.service.xml.diff;
29
30 /**
31 * Container for transaction cursor depths in both the old and new revision.
32 *
33 * @author Johannes Lichtenberger, University of Konstanz
34 *
35 */
36 final class DepthCounter {
37 /** Depth in new revision. */
38 private transient int mNewDepth;
39
40 /** Depth in old revision. */
41 private transient int mOldDepth;
42
43 /**
44 * Constructor.
45 *
46 * @param paramNewDepth
47 * depth of transaction cursor in new revision
48 * @param paramOldDepth
49 * depth of transaction cursor in old revision
50 */
51 DepthCounter(final int paramNewDepth, final int paramOldDepth) {
52 mNewDepth = paramNewDepth;
53 mOldDepth = paramOldDepth;
54 }
55
56 /** Increment depth in new revision. */
57 void incrementNewDepth() {
58 mNewDepth++;
59 }
60
61 /** Decrement depth in new revision. */
62 void decrementNewDepth() {
63 mNewDepth--;
64 }
65
66 /** Increment depth in old revision. */
67 void incrementOldDepth() {
68 mOldDepth++;
69 }
70
71 /** Decrement depth in old revision. */
72 void decrementOldDepth() {
73 mOldDepth--;
74 }
75
76 /**
77 * Get depth in new revision.
78 *
79 * @return depth in new revision
80 */
81 int getNewDepth() {
82 return mNewDepth;
83 }
84
85 /**
86 * Get depth in old revision.
87 *
88 * @return depth in old revision
89 */
90 int getOldDepth() {
91 return mOldDepth;
92 }
93 }