001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.util;
019
020import static org.apache.hadoop.hbase.regionserver.HStoreFile.LAST_BLOOM_KEY;
021
022import java.io.IOException;
023
024import org.apache.hadoop.hbase.Cell;
025import org.apache.hadoop.hbase.CellComparator;
026import org.apache.hadoop.hbase.CellComparatorImpl;
027import org.apache.hadoop.hbase.CellUtil;
028import org.apache.hadoop.hbase.io.hfile.HFile.Writer;
029import org.apache.yetus.audience.InterfaceAudience;
030
031/**
032 * Handles ROW bloom related context. It works with both ByteBufferedCell and byte[] backed cells
033 */
034@InterfaceAudience.Private
035public class RowBloomContext extends BloomContext {
036
037  public RowBloomContext(BloomFilterWriter bloomFilterWriter, CellComparator comparator) {
038    super(bloomFilterWriter, comparator);
039  }
040
041  @Override
042  public void addLastBloomKey(Writer writer) throws IOException {
043    if (this.getLastCell() != null) {
044      byte[] key = CellUtil.copyRow(this.getLastCell());
045      writer.appendFileInfo(LAST_BLOOM_KEY, key);
046    }
047  }
048
049  @Override
050  protected boolean isNewKey(Cell cell) {
051    if (this.getLastCell() != null) {
052      return !CellUtil.matchingRows(cell, this.getLastCell());
053    }
054    return true;
055  }
056}