/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 at
 *
 *     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 org.apache.cassandra.db.marshal;

import java.nio.ByteBuffer;
import org.apache.cassandra.db.Column;
import org.apache.cassandra.db.context.CounterContext;
import org.apache.cassandra.utils.ByteBufferUtil;

public abstract class AbstractCommutativeType extends AbstractType<Long>
{
    public boolean isCommutative()
    {
        return true;
    }

    @Override
    public Long compose(ByteBuffer bytes)
    {
        return CounterContext.instance().total(bytes);
    }

    @Override
    public ByteBuffer decompose(Long value)
    {
        return ByteBufferUtil.bytes(value);
    }

    /**
     * create commutative column
     */
    public abstract Column createColumn(ByteBuffer name, ByteBuffer value, long timestamp);
}