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.regionserver;
019
020import java.io.IOException;
021import java.util.ArrayList;
022import java.util.List;
023import java.util.Locale;
024import java.util.UUID;
025
026import org.apache.yetus.audience.InterfaceAudience;
027import org.apache.yetus.audience.InterfaceStability;
028import org.apache.hadoop.hbase.HBaseInterfaceAudience;
029import org.apache.hadoop.hbase.client.Durability;
030import org.apache.hadoop.hbase.wal.WALEdit;
031
032import com.google.protobuf.Message;
033
034/**
035 * Base class for RowProcessor with some default implementations.
036 */
037@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.COPROC)
038@InterfaceStability.Evolving
039public abstract class BaseRowProcessor<S extends Message,T extends Message> 
040implements RowProcessor<S,T> {
041
042  @Override
043  public void preProcess(HRegion region, WALEdit walEdit) throws IOException {
044  }
045
046  @Override
047  public void preBatchMutate(HRegion region, WALEdit walEdit) throws IOException {
048  }
049
050  @Override
051  public void postBatchMutate(HRegion region) throws IOException {
052  }
053
054  @Override
055  public void postProcess(HRegion region, WALEdit walEdit, boolean success) throws IOException {
056  }
057
058  @Override
059  public List<UUID> getClusterIds() {
060    return new ArrayList<>();
061  }
062
063  @Override
064  public String getName() {
065    return this.getClass().getSimpleName().toLowerCase(Locale.ROOT);
066  }
067
068  @Override
069  public Durability useDurability() {
070    return Durability.USE_DEFAULT;
071  }
072}