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- /*
- * 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
- *
- * 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.storage.pack;
-
- import java.io.IOException;
- import java.util.Set;
-
- import org.eclipse.jgit.lib.ObjectId;
-
- /** Describes a pack file {@link ObjectReuseAsIs} can append onto a stream. */
- public abstract class CachedPack {
- /**
- * Objects that start this pack.
- * <p>
- * All objects reachable from the tips are contained within this pack. If
- * {@link PackWriter} is going to include everything reachable from all of
- * these objects, this cached pack is eligible to be appended directly onto
- * the output pack stream.
- *
- * @return the tip objects that describe this pack.
- */
- public abstract Set<ObjectId> getTips();
-
- /**
- * Get the number of objects in this pack.
- *
- * @return the total object count for the pack.
- * @throws IOException
- * if the object count cannot be read.
- */
- public abstract long getObjectCount() throws IOException;
-
- /**
- * Determine if the pack contains the requested objects.
- *
- * @param <T>
- * any type of ObjectId to search for.
- * @param toFind
- * the objects to search for.
- * @return the objects contained in the pack.
- * @throws IOException
- * the pack cannot be accessed
- */
- public abstract <T extends ObjectId> Set<ObjectId> hasObject(
- Iterable<T> toFind) throws IOException;
- }
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