1 /* 2 * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package com.oracle.ipack.blobs; 27 28 import java.io.DataOutput; 29 import java.io.IOException; 30 31 public abstract class Blob { 32 public final int getSize() { 33 return 8 + getPayloadSize(); 34 } 35 36 public final void write(final DataOutput dataOutput) throws IOException { 37 dataOutput.writeInt(getMagic()); 38 dataOutput.writeInt(getSize()); 39 writePayload(dataOutput); 40 } 41 42 protected abstract int getMagic(); 43 44 protected abstract int getPayloadSize(); 45 46 protected abstract void writePayload(DataOutput dataOutput) 47 throws IOException; 48 }