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.function.IntConsumer;
022import org.apache.hadoop.fs.Path;
023import org.apache.hadoop.hbase.ExtendedCell;
024import org.apache.hadoop.hbase.client.Scan;
025
026public class DelegatingKeyValueScanner implements KeyValueScanner {
027  protected KeyValueScanner delegate;
028
029  public DelegatingKeyValueScanner(KeyValueScanner delegate) {
030    this.delegate = delegate;
031  }
032
033  @Override
034  public void shipped() throws IOException {
035    delegate.shipped();
036  }
037
038  @Override
039  public ExtendedCell peek() {
040    return delegate.peek();
041  }
042
043  @Override
044  public ExtendedCell next() throws IOException {
045    return delegate.next();
046  }
047
048  @Override
049  public boolean seek(ExtendedCell key) throws IOException {
050    return delegate.seek(key);
051  }
052
053  @Override
054  public boolean reseek(ExtendedCell key) throws IOException {
055    return delegate.reseek(key);
056  }
057
058  @Override
059  public long getScannerOrder() {
060    return delegate.getScannerOrder();
061  }
062
063  @Override
064  public void close() {
065    delegate.close();
066  }
067
068  @Override
069  public boolean shouldUseScanner(Scan scan, HStore store, long oldestUnexpiredTS) {
070    return delegate.shouldUseScanner(scan, store, oldestUnexpiredTS);
071  }
072
073  @Override
074  public boolean requestSeek(ExtendedCell kv, boolean forward, boolean useBloom)
075    throws IOException {
076    return delegate.requestSeek(kv, forward, useBloom);
077  }
078
079  @Override
080  public boolean realSeekDone() {
081    return delegate.realSeekDone();
082  }
083
084  @Override
085  public void enforceSeek() throws IOException {
086    delegate.enforceSeek();
087  }
088
089  @Override
090  public boolean isFileScanner() {
091    return delegate.isFileScanner();
092  }
093
094  @Override
095  public Path getFilePath() {
096    return delegate.getFilePath();
097  }
098
099  @Override
100  public boolean backwardSeek(ExtendedCell key) throws IOException {
101    return delegate.backwardSeek(key);
102  }
103
104  @Override
105  public boolean seekToPreviousRow(ExtendedCell key) throws IOException {
106    return delegate.seekToPreviousRow(key);
107  }
108
109  @Override
110  public boolean seekToLastRow() throws IOException {
111    return delegate.seekToLastRow();
112  }
113
114  @Override
115  public ExtendedCell getNextIndexedKey() {
116    return delegate.getNextIndexedKey();
117  }
118
119  @Override
120  public void recordBlockSize(IntConsumer blockSizeConsumer) {
121    delegate.recordBlockSize(blockSizeConsumer);
122  }
123}