/*
 * Copyright 2009-2010 by The Regents of the University of California
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * you may obtain a copy of the License from
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package edu.uci.ics.hyracks.storage.am.lsm.btree.tuples;

import edu.uci.ics.hyracks.api.dataflow.value.ITypeTraits;
import edu.uci.ics.hyracks.dataflow.common.data.accessors.ITupleReference;

public class LSMBTreeCopyTupleWriter extends LSMBTreeTupleWriter {
	public LSMBTreeCopyTupleWriter(ITypeTraits[] typeTraits, int numKeyFields){
		// Third parameter is never used locally, just give false.
	    super(typeTraits, numKeyFields, false);
	}
	
	@Override
    public int writeTuple(ITupleReference tuple, byte[] targetBuf, int targetOff) {
		int tupleSize = bytesRequired(tuple);
		byte[] buf = tuple.getFieldData(0);
		int tupleStartOff = ((LSMBTreeTupleReference)tuple).getTupleStart();
		System.arraycopy(buf, tupleStartOff, targetBuf, targetOff, tupleSize);
        return tupleSize;
    }
}