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 /*
  *
  * 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.hadoop.hbase.util;
Specifies methods needed to add elements to a Bloom filter and serialize the resulting Bloom filter as a sequence of bytes.
public interface BloomFilterWriter extends BloomFilterBase {

  
Allocate memory for the bloom filter data.
  void allocBloom();

  
Compact the Bloom filter before writing metadata & data to disk.
  void compactBloom();

  
Get a writable interface into bloom filter meta data.

Returns:
a writable instance that can be later written to a stream
Get a writable interface into bloom filter data (the actual Bloom bits). Not used for compound Bloom filters.

Returns:
a writable instance that can be later written to a stream
Add the specified binary to the bloom filter.

Parameters:
buf data to be added to the bloom
offset offset into the data to be added
len length of the data to be added
  void add(byte[] bufint offsetint len);
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