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 org.apache.hadoop.hbase.Cell; 021import org.apache.hadoop.hbase.filter.FilterBase; 022import org.apache.hadoop.hbase.mob.MobUtils; 023import org.apache.yetus.audience.InterfaceAudience; 024 025/** 026 * A filter that returns the cells which have mob reference tags. It's a server-side filter. 027 */ 028@InterfaceAudience.Private 029class MobReferenceOnlyFilter extends FilterBase { 030 031 @Override 032 public ReturnCode filterCell(final Cell cell) { 033 if (null != cell) { 034 // If a cell with a mob reference tag, it's included. 035 if (MobUtils.isMobReferenceCell(cell)) { 036 return ReturnCode.INCLUDE; 037 } 038 } 039 return ReturnCode.SKIP; 040 } 041 042 @Override 043 public boolean equals(Object obj) { 044 if (!(obj instanceof MobReferenceOnlyFilter)) { 045 return false; 046 } 047 return obj == this; 048 } 049 050 @Override 051 public int hashCode() { 052 return super.hashCode(); 053 } 054}