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Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
package org.apache.hadoop.hbase.replication;
A WALEntryFilter which contains multiple filters and applies them in chain order
public class ChainWALEntryFilter implements WALEntryFilter {
  private final WALEntryFilter[] filters;
  public ChainWALEntryFilter(WALEntryFilter...filters) {
    this. = filters;
  public ChainWALEntryFilter(List<WALEntryFilterfilters) {
    ArrayList<WALEntryFilterrawFilters = new ArrayList<WALEntryFilter>(filters.size());
    // flatten the chains
    for (WALEntryFilter filter : filters) {
      if (filter instanceof ChainWALEntryFilter) {
        for (WALEntryFilter f : ((ChainWALEntryFilterfilter).) {
      } else {
    this. = rawFilters.toArray(new WALEntryFilter[rawFilters.size()]);
  public Entry filter(Entry entry) {
    for (WALEntryFilter filter : ) {
      if (entry == null) {
        return null;
      entry = filter.filter(entry);
    return entry;
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