75 lines
2.4 KiB
Java
75 lines
2.4 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.cassandra.db.index;
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import java.io.IOException;
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import java.util.Set;
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import org.apache.cassandra.db.ColumnFamilyStore;
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import org.apache.cassandra.db.DecoratedKey;
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import org.apache.cassandra.db.Keyspace;
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import org.apache.cassandra.db.compaction.CompactionInfo;
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import org.apache.cassandra.db.compaction.OperationType;
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import org.apache.cassandra.db.compaction.CompactionInterruptedException;
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import org.apache.cassandra.io.sstable.ReducingKeyIterator;
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/**
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* Manages building an entire index from column family data. Runs on to compaction manager.
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*/
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public class SecondaryIndexBuilder extends CompactionInfo.Holder
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{
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private final ColumnFamilyStore cfs;
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private final Set<String> idxNames;
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private final ReducingKeyIterator iter;
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public SecondaryIndexBuilder(ColumnFamilyStore cfs, Set<String> idxNames, ReducingKeyIterator iter)
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{
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this.cfs = cfs;
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this.idxNames = idxNames;
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this.iter = iter;
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}
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public CompactionInfo getCompactionInfo()
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{
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return new CompactionInfo(cfs.metadata,
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OperationType.INDEX_BUILD,
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iter.getBytesRead(),
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iter.getTotalBytes());
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}
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public void build()
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{
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while (iter.hasNext())
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{
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if (isStopRequested())
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throw new CompactionInterruptedException(getCompactionInfo());
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DecoratedKey key = iter.next();
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Keyspace.indexRow(key, cfs, idxNames);
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}
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try
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{
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iter.close();
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}
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catch (IOException e)
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{
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throw new RuntimeException(e);
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}
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}
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}
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