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