jgit/org.eclipse.jgit.storage.dht/src/org/eclipse/jgit/storage/dht/DhtMissingChunkException.java

/*
 * Copyright (C) 2011, 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
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 * without modification, are permitted provided that the following
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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package org.eclipse.jgit.storage.dht;

import java.text.MessageFormat;

/** Indicates a {@link PackChunk} doesn't exist in the database. */
public class DhtMissingChunkException extends DhtException {
	private static final long serialVersionUID = 1L;

	private final ChunkKey chunkKey;

	/**
	 * Initialize a new missing chunk exception.
	 *
	 * @param key
	 *            the key of the chunk that is not found.
	 */
	public DhtMissingChunkException(ChunkKey key) {
		super(MessageFormat.format(DhtText.get().missingChunk, key));
		chunkKey = key;
	}

	/**
	 * Initialize a new missing chunk exception.
	 *
	 * @param key
	 *            the key of the chunk that is not found.
	 * @param why
	 *            reason the chunk is missing. This may be an explanation about
	 *            low-level data corruption in the database.
	 */
	public DhtMissingChunkException(ChunkKey key, Throwable why) {
		this(key);
		initCause(why);
	}

	/** @return key of the chunk that is missing. */
	public ChunkKey getChunkKey() {
		return chunkKey;
	}
}