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;
023import org.apache.hadoop.hbase.Cell;
024import org.apache.hadoop.hbase.CellComparator;
025import org.apache.hadoop.hbase.CellUtil;
026import org.apache.hadoop.hbase.io.hfile.HFile.Writer;
027import org.apache.yetus.audience.InterfaceAudience;
028
029/**
030 * Handles ROW bloom related context. It works with both ByteBufferedCell and byte[] backed cells
031 */
032@InterfaceAudience.Private
033public class RowBloomContext extends BloomContext {
034
035  public RowBloomContext(BloomFilterWriter bloomFilterWriter, CellComparator comparator) {
036    super(bloomFilterWriter, comparator);
037  }
038
039  @Override
040  public void addLastBloomKey(Writer writer) throws IOException {
041    if (this.getLastCell() != null) {
042      byte[] key = CellUtil.copyRow(this.getLastCell());
043      writer.appendFileInfo(LAST_BLOOM_KEY, key);
044    }
045  }
046
047  @Override
048  protected boolean isNewKey(Cell cell) {
049    if (this.getLastCell() != null) {
050      return !CellUtil.matchingRows(cell, this.getLastCell());
051    }
052    return true;
053  }
054}