cassandra-analytics-core/src/main/java/org/apache/cassandra/spark/common/schema/CollectionType.java

/*
 * 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.spark.common.schema;

import java.io.Serializable;
import java.nio.ByteBuffer;
import java.util.Collection;
import java.util.Collections;
import java.util.List;

public abstract class CollectionType<EntryType, IntermediateType> implements ColumnType<Collection<EntryType>>, Serializable
{
    @Override
    public Collection<EntryType> parseColumn(ByteBuffer buffer, int length)
    {
        throw new UnsupportedOperationException("parseColumn() can't be called on CollectionType");
    }

    public abstract IntermediateType parseCollectionColumn(ByteBuffer colNameSuffix, ByteBuffer colValue);

    public Collection<EntryType> getDefault()
    {
        return Collections.emptyList();
    }

    public abstract List<EntryType> finaliseCollection(List<IntermediateType> entryList);

    public ByteBuffer serialize(Collection<EntryType> value)
    {
        throw new UnsupportedOperationException("Doesn't make much sense");
    }
}