content: /*
   * 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
   *
   *    http://www.apache.org/licenses/LICENSE-2.0
   *
   * 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.carbondata.core.scan.filter.executer;
  
  import java.util.BitSet;
  
  import org.apache.carbondata.core.scan.filter.intf.FilterExecutorType;
  
  /**
   * Class for updating the bitset
   * If include it will set the bit
   * If exclude it will flip the bit
   */
  public final class BitSetUpdaterFactory {
  
    public static final BitSetUpdaterFactory INSTANCE = new BitSetUpdaterFactory();
  
    public FilterBitSetUpdater getBitSetUpdater(FilterExecutorType filterExecutorType) {
      switch (filterExecutorType) {
        case INCLUDE:
          return new IncludeFilterBitSetUpdater();
        case EXCLUDE:
          return new ExcludeFilterBitSetUpdater();
        default:
          throw new UnsupportedOperationException(
              "Invalid filter executor type:" + filterExecutorType);
      }
    }
  
    /**
     * Below class will be used to updating the bitset in case of include filter
     */
    static class IncludeFilterBitSetUpdater implements FilterBitSetUpdater {
      @Override
      public void updateBitset(BitSet bitSet, int bitIndex) {
        bitSet.set(bitIndex);
      }
    }
  
    /**
     * Below class will be used to updating the bitset in case of exclude filter
     */
    static class ExcludeFilterBitSetUpdater implements FilterBitSetUpdater {
      @Override
      public void updateBitset(BitSet bitSet, int bitIndex) {
        bitSet.flip(bitIndex);
      }
    }
  }
  