/**
* 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.index;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.SortedSet;
import org.apache.cassandra.db.ColumnFamilyStore;
import org.apache.cassandra.db.DecoratedKey;
import org.apache.cassandra.db.Table;
import org.apache.cassandra.db.compaction.CompactionInfo;
import org.apache.cassandra.db.compaction.OperationType;
import org.apache.cassandra.io.sstable.ReducingKeyIterator;
/**
* Manages building an entire index from column family data
* Sent to compaction manager
*/
public class SecondaryIndexBuilder implements CompactionInfo.Holder
{
private final ColumnFamilyStore cfs;
private final SortedSet<ByteBuffer> columns;
private final ReducingKeyIterator iter;
public SecondaryIndexBuilder(ColumnFamilyStore cfs, SortedSet<ByteBuffer> columns, ReducingKeyIterator iter)
{
this.cfs = cfs;
this.columns = columns;
this.iter = iter;
}
public CompactionInfo getCompactionInfo()
{
return new CompactionInfo(this.hashCode(),
cfs.table.name,
cfs.columnFamily,
OperationType.INDEX_BUILD,
iter.getBytesRead(),
iter.getTotalBytes());
}
public void build()
{
while (iter.hasNext())
{
DecoratedKey<?> key = iter.next();
Table.indexRow(key, cfs, columns);
}
try
{
iter.close();
}
catch (IOException e)
{
throw new RuntimeException(e);
}
}
}