1 /*
2 * Copyright (C) 2010, Google Inc.
3 * Copyright (C) 2008-2009, Johannes E. Schindelin <johannes.schindelin@gmx.de> and others
4 *
5 * This program and the accompanying materials are made available under the
6 * terms of the Eclipse Distribution License v. 1.0 which is available at
7 * https://www.eclipse.org/org/documents/edl-v10.php.
8 *
9 * SPDX-License-Identifier: BSD-3-Clause
10 */
11
12 package org.eclipse.jgit.diff;
13
14 /**
15 * Arbitrary sequence of elements.
16 * <p>
17 * A sequence of elements is defined to contain elements in the index range
18 * <code>[0, {@link #size()})</code>, like a standard Java List implementation.
19 * Unlike a List, the members of the sequence are not directly obtainable.
20 * <p>
21 * Implementations of Sequence are primarily intended for use in content
22 * difference detection algorithms, to produce an
23 * {@link org.eclipse.jgit.diff.EditList} of {@link org.eclipse.jgit.diff.Edit}
24 * instances describing how two Sequence instances differ.
25 * <p>
26 * To be compared against another Sequence of the same type, a supporting
27 * {@link org.eclipse.jgit.diff.SequenceComparator} must also be supplied.
28 */
29 public abstract class Sequence {
30 /** @return total number of items in the sequence. */
31 /**
32 * Get size
33 *
34 * @return size
35 */
36 public abstract int size();
37 }