org.eclipse.jgit/src/org/eclipse/jgit/notes/NoteBucket.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.
 *
 * 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
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 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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package org.eclipse.jgit.notes;

import java.io.IOException;
import java.util.Iterator;

import org.eclipse.jgit.lib.AnyObjectId;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.ObjectInserter;
import org.eclipse.jgit.lib.ObjectReader;

/**
 * A tree that stores note objects.
 *
 * @see FanoutBucket
 * @see LeafBucket
 */
abstract class NoteBucket {
	abstract Note getNote(AnyObjectId objId, ObjectReader reader)
			throws IOException;

	abstract Iterator<Note> iterator(AnyObjectId objId, ObjectReader reader)
			throws IOException;

	abstract int estimateSize(AnyObjectId noteOn, ObjectReader or)
			throws IOException;

	abstract InMemoryNoteBucket set(AnyObjectId noteOn, AnyObjectId noteData,
			ObjectReader reader) throws IOException;

	abstract ObjectId writeTree(ObjectInserter inserter) throws IOException;

	abstract ObjectId getTreeId();
}