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- /*
- * Copyright (C) 2008-2009, Robin Rosenberg <robin.rosenberg@dewire.com>
- * Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org>
- * and other copyright owners as documented in the project's IP log.
- *
- * This program and the accompanying materials are made available
- * under the terms of the Eclipse Distribution License v1.0 which
- * accompanies this distribution, is reproduced below, and is
- * available at http://www.eclipse.org/org/documents/edl-v10.php
- *
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or
- * without modification, are permitted provided that the following
- * conditions are met:
- *
- * - Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * - Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following
- * disclaimer in the documentation and/or other materials provided
- * with the distribution.
- *
- * - Neither the name of the Eclipse Foundation, Inc. nor the
- * names of its contributors may be used to endorse or promote
- * products derived from this software without specific prior
- * written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
- * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
- package org.eclipse.jgit.transport;
-
- import org.eclipse.jgit.lib.AnyObjectId;
- import org.eclipse.jgit.lib.ObjectId;
-
- /**
- * Description of an object stored in a pack file, including offset.
- * <p>
- * When objects are stored in packs Git needs the ObjectId and the offset
- * (starting position of the object data) to perform random-access reads of
- * objects from the pack. This extension of ObjectId includes the offset.
- */
- public class PackedObjectInfo extends ObjectId {
- private long offset;
-
- private int crc;
-
- PackedObjectInfo(final long headerOffset, final int packedCRC,
- final AnyObjectId id) {
- super(id);
- offset = headerOffset;
- crc = packedCRC;
- }
-
- /**
- * Create a new structure to remember information about an object.
- *
- * @param id
- * the identity of the object the new instance tracks.
- */
- public PackedObjectInfo(final AnyObjectId id) {
- super(id);
- }
-
- /**
- * @return offset in pack when object has been already written, or 0 if it
- * has not been written yet
- */
- public long getOffset() {
- return offset;
- }
-
- /**
- * Set the offset in pack when object has been written to.
- *
- * @param offset
- * offset where written object starts
- */
- public void setOffset(final long offset) {
- this.offset = offset;
- }
-
- /**
- * @return the 32 bit CRC checksum for the packed data.
- */
- public int getCRC() {
- return crc;
- }
-
- /**
- * Record the 32 bit CRC checksum for the packed data.
- *
- * @param crc
- * checksum of all packed data (including object type code,
- * inflated length and delta base reference) as computed by
- * {@link java.util.zip.CRC32}.
- */
- public void setCRC(final int crc) {
- this.crc = crc;
- }
- }
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