/* 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;
import com.db4o.*;
import com.db4o.foundation.*;
import com.db4o.internal.marshall.*;
import com.db4o.marshall.*;
/**
* @exclude
*/
public abstract class AbstractBufferContext implements BufferContext, HandlerVersionContext{
private ReadBuffer _buffer;
private final Transaction _transaction;
public AbstractBufferContext(Transaction transaction, ReadBuffer buffer) {
_transaction = transaction;
_buffer = buffer;
}
public ReadBuffer buffer(ReadBuffer buffer) {
ReadBuffer temp = _buffer;
_buffer = buffer;
return temp;
}
public ReadBuffer buffer() {
return _buffer;
}
public byte readByte() {
return _buffer.readByte();
}
public void readBytes(byte[] bytes) {
_buffer.readBytes(bytes);
}
public int readInt() {
return _buffer.readInt();
}
public long readLong() {
return _buffer.readLong();
}
public int offset() {
return _buffer.offset();
}
public void seek(int offset) {
_buffer.seek(offset);
}
public ObjectContainerBase container() {
return _transaction.container();
}
public ObjectContainer objectContainer() {
return container();
}
public Transaction transaction() {
return _transaction;
}
public abstract int handlerVersion();
public boolean isLegacyHandlerVersion() {
return handlerVersion() == 0;
}
public BitMap4 readBitMap(int bitCount){
return _buffer.readBitMap(bitCount);
}
public SlotFormat slotFormat() {
return SlotFormat.forHandlerVersion(handlerVersion());
}
}