1/*- 2 * See the file LICENSE for redistribution information. 3 * 4 * Copyright (c) 2000-2009 Oracle. All rights reserved. 5 * 6 * $Id$ 7 */ 8 9package com.sleepycat.bind; 10 11import com.sleepycat.db.DatabaseEntry; 12 13/** 14 * A pass-through <code>EntryBinding</code> that uses the entry's byte array as 15 * the key or data object. 16 * 17 * @author Mark Hayes 18 */ 19public class ByteArrayBinding implements EntryBinding<byte[]> { 20 21 /* 22 * We can return the same byte[] for 0 length arrays. 23 */ 24 private static byte[] ZERO_LENGTH_BYTE_ARRAY = new byte[0]; 25 26 /** 27 * Creates a byte array binding. 28 */ 29 public ByteArrayBinding() { 30 } 31 32 // javadoc is inherited 33 public byte[] entryToObject(DatabaseEntry entry) { 34 35 int len = entry.getSize(); 36 if (len == 0) { 37 return ZERO_LENGTH_BYTE_ARRAY; 38 } else { 39 byte[] bytes = new byte[len]; 40 System.arraycopy(entry.getData(), entry.getOffset(), 41 bytes, 0, bytes.length); 42 return bytes; 43 } 44 } 45 46 // javadoc is inherited 47 public void objectToEntry(byte[] object, DatabaseEntry entry) { 48 49 entry.setData(object, 0, object.length); 50 } 51} 52