1 /**
2 *
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 */
19 package org.apache.hadoop.hbase.regionserver;
20
21 import org.apache.hadoop.hbase.classification.InterfaceAudience;
22 import org.apache.hadoop.hbase.Cell;
23 import org.apache.hadoop.hbase.filter.FilterBase;
24 import org.apache.hadoop.hbase.mob.MobUtils;
25
26 /**
27 * A filter that returns the cells which have mob reference tags. It's a server-side filter.
28 */
29 @InterfaceAudience.Private
30 class MobReferenceOnlyFilter extends FilterBase {
31
32 @Override
33 public ReturnCode filterKeyValue(Cell cell) {
34 if (null != cell) {
35 // If a cell with a mob reference tag, it's included.
36 if (MobUtils.isMobReferenceCell(cell)) {
37 return ReturnCode.INCLUDE;
38 }
39 }
40 return ReturnCode.SKIP;
41 }
42 }