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- /*
- * Copyright (C) 2008-2009, Google Inc.
- * Copyright (C) 2008, Jonas Fonseca <fonseca@diku.dk>
- * Copyright (C) 2008, Marek Zawirski <marek.zawirski@gmail.com>
- * Copyright (C) 2007, Robin Rosenberg <robin.rosenberg@dewire.com>
- * Copyright (C) 2006-2008, 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.lib;
-
-
- /**
- * Base class for a set of loaders for different representations of Git objects.
- * New loaders are constructed for every object.
- */
- public abstract class ObjectLoader {
- /**
- * @return Git in pack object type, see {@link Constants}.
- */
- public abstract int getType();
-
- /**
- * @return size of object in bytes
- */
- public abstract long getSize();
-
- /**
- * Obtain a copy of the bytes of this object.
- * <p>
- * Unlike {@link #getCachedBytes()} this method returns an array that might
- * be modified by the caller.
- *
- * @return the bytes of this object.
- */
- public final byte[] getBytes() {
- final byte[] data = getCachedBytes();
- final byte[] copy = new byte[data.length];
- System.arraycopy(data, 0, copy, 0, data.length);
- return copy;
- }
-
- /**
- * Obtain a reference to the (possibly cached) bytes of this object.
- * <p>
- * This method offers direct access to the internal caches, potentially
- * saving on data copies between the internal cache and higher level code.
- * Callers who receive this reference <b>must not</b> modify its contents.
- * Changes (if made) will affect the cache but not the repository itself.
- *
- * @return the cached bytes of this object. Do not modify it.
- */
- public abstract byte[] getCachedBytes();
-
- /**
- * @return raw object type from object header, as stored in storage (pack,
- * loose file). This may be different from {@link #getType()} result
- * for packs (see {@link Constants}).
- */
- public abstract int getRawType();
-
- /**
- * @return raw size of object from object header (pack, loose file).
- * Interpretation of this value depends on {@link #getRawType()}.
- */
- public abstract long getRawSize();
- }
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