src/java/org/apache/cassandra/db/composites/SimpleDenseCellNameType.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.db.composites;

import java.nio.ByteBuffer;

import org.apache.cassandra.config.CFMetaData;
import org.apache.cassandra.config.ColumnDefinition;
import org.apache.cassandra.cql3.CQL3Row;
import org.apache.cassandra.cql3.ColumnIdentifier;
import org.apache.cassandra.db.marshal.AbstractType;

public class SimpleDenseCellNameType extends AbstractSimpleCellNameType
{
    public SimpleDenseCellNameType(AbstractType<?> type)
    {
        super(type);
    }

    public int clusteringPrefixSize()
    {
        return 1;
    }

    public CBuilder prefixBuilder()
    {
        // Simple dense is "all" prefix
        return builder();
    }

    public CellNameType setSubtype(int position, AbstractType<?> newType)
    {
        if (position != 0)
            throw new IllegalArgumentException();
        return new SimpleDenseCellNameType(newType);
    }

    public boolean isDense()
    {
        return true;
    }

    public CellName create(Composite prefix, ColumnDefinition column)
    {
        assert prefix.size() == 1;
        // We ignore the column because it's just the COMPACT_VALUE name which is not store in the cell name
        return new SimpleDenseCellName(prefix.get(0));
    }

    @Override
    public Composite fromByteBuffer(ByteBuffer bb)
    {
        return !bb.hasRemaining()
             ? Composites.EMPTY
             : new SimpleDenseCellName(bb);
    }

    public void addCQL3Column(ColumnIdentifier id) {}
    public void removeCQL3Column(ColumnIdentifier id) {}

    public CQL3Row.Builder CQL3RowBuilder(CFMetaData metadata, long now)
    {
        return makeDenseCQL3RowBuilder(now);
    }
}