org.eclipse.jgit/src/org/eclipse/jgit/storage/pack/DeltaWindowEntry.java

/*
 * Copyright (C) 2010, Google Inc.
 * 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.
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 * 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
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 *   disclaimer in the documentation and/or other materials provided
 *   with the distribution.
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 * - 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
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package org.eclipse.jgit.storage.pack;

class DeltaWindowEntry {
	ObjectToPack object;

	/** Complete contents of this object. Lazily loaded. */
	byte[] buffer;

	/** Index of this object's content, to encode other deltas. Lazily loaded. */
	DeltaIndex index;

	void set(ObjectToPack object) {
		this.object = object;
		this.index = null;
		this.buffer = null;
	}

	/** @return current delta chain depth of this object. */
	int depth() {
		return object.getDeltaDepth();
	}

	/** @return type of the object in this window entry. */
	int type() {
		return object.getType();
	}

	/** @return estimated unpacked size of the object, in bytes . */
	int size() {
		return object.getWeight();
	}

	/** @return true if there is no object stored in this entry. */
	boolean empty() {
		return object == null;
	}
}