/* This file is part of the db4o object database http://www.db4o.com
Copyright (C) 2004 - 2011 Versant Corporation http://www.versant.com
db4o is free software; you can redistribute it and/or modify it under
the terms of version 3 of the GNU General Public License as published
by the Free Software Foundation.
db4o is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License along
with this program. If not, see http://www.gnu.org/licenses/. */
package com.db4o.internal.handlers;
import com.db4o.*;
import com.db4o.foundation.*;
import com.db4o.internal.*;
import com.db4o.marshall.*;
import com.db4o.reflect.*;
public final class ByteHandler extends PrimitiveHandler {
static final int LENGTH = 1 + Const4.ADDED_LENGTH;
private static final Byte DEFAULTVALUE = new Byte((byte)0);
public Object coerce(ReflectClass claxx, Object obj) {
return Coercion4.toByte(obj);
}
public Object defaultValue(){
return DEFAULTVALUE;
}
public int linkLength(){
return LENGTH;
}
public Class primitiveJavaClass(){
return byte.class;
}
Object read1(ByteArrayBuffer a_bytes){
if (Deploy.debug){
a_bytes.readBegin(Const4.YAPBYTE);
}
byte ret = a_bytes.readByte();
if (Deploy.debug){
a_bytes.readEnd();
}
return new Byte(ret);
}
public void write(Object a_object, ByteArrayBuffer a_bytes){
if(Deploy.debug){
a_bytes.writeBegin(Const4.YAPBYTE);
}
a_bytes.writeByte(((Byte)a_object).byteValue());
if(Deploy.debug){
a_bytes.writeEnd();
}
}
public Object read(ReadContext context) {
if (Deploy.debug) {
Debug4.readBegin(context, Const4.YAPBYTE);
}
byte byteValue = context.readByte();
if (Deploy.debug) {
Debug4.readEnd(context);
}
return new Byte(byteValue);
}
public void write(WriteContext context, Object obj) {
if (Deploy.debug) {
Debug4.writeBegin(context, Const4.YAPBYTE);
}
context.writeByte(((Byte)obj).byteValue());
if (Deploy.debug) {
Debug4.writeEnd(context);
}
}
public PreparedComparison internalPrepareComparison(Object source) {
final byte sourceByte = ((Byte)source).byteValue();
return new PreparedComparison() {
public int compareTo(Object target) {
if(target == null){
return 1;
}
byte targetByte = ((Byte)target).byteValue();
return sourceByte == targetByte ? 0 : (sourceByte < targetByte ? - 1 : 1);
}
};
}
}