hyracks/hyracks-data/hyracks-data-std/src/main/java/edu/uci/ics/hyracks/data/std/util/GrowableArray.java

/*
 * Copyright 2009-2013 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.data.std.util;

import java.io.DataOutput;
import java.io.DataOutputStream;
import java.io.IOException;

import edu.uci.ics.hyracks.data.std.api.IDataOutputProvider;
import edu.uci.ics.hyracks.data.std.api.IValueReference;

public class GrowableArray implements IDataOutputProvider {
    private final ByteArrayAccessibleOutputStream baaos = new ByteArrayAccessibleOutputStream();
    private final DataOutputStream dos = new DataOutputStream(baaos);

    @Override
    public DataOutput getDataOutput() {
        return dos;
    }

    public void reset() {
        baaos.reset();
    }

    public byte[] getByteArray() {
        return baaos.getByteArray();
    }

    public int getLength() {
        return baaos.size();
    }

    public void append(IValueReference value) throws IOException {
        dos.write(value.getByteArray(), value.getStartOffset(), value.getLength());
    }
}