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.RowIntf;
  import org.apache.carbondata.core.scan.processor.RawBlockletColumnChunks;
  import org.apache.carbondata.core.util.BitSetGroup;
  
  public class TrueFilterExecutor implements FilterExecutor {
  
    /**
     * API will apply filter based on resolver instance
     *
     * @return
     */
    public BitSetGroup applyFilter(RawBlockletColumnChunks rawBlockletColumnChunks,
        boolean useBitsetPipeLine) {
      int numberOfPages = rawBlockletColumnChunks.getDataBlock().numberOfPages();
      BitSetGroup group = new BitSetGroup(numberOfPages);
      for (int i = 0; i < numberOfPages; i++) {
        BitSet set = new BitSet();
        set.flip(0, rawBlockletColumnChunks.getDataBlock().getPageRowCount(i));
        group.setBitSet(set, i);
      }
      return group;
    }
  
    @Override
    public BitSet prunePages(RawBlockletColumnChunks rawBlockletColumnChunks) {
      int numberOfPages = rawBlockletColumnChunks.getDataBlock().numberOfPages();
      BitSet set = new BitSet(numberOfPages);
      set.set(0, numberOfPages);
      return set;
    }
  
    @Override
    public boolean applyFilter(RowIntf value, int dimOrdinalMax) {
      return true;
    }
  
    /**
     * API will verify whether the block can be shortlisted based on block
     * max and min key.
     *
     * @param blockMaxValue, maximum value of the
     * @param blockMinValue
     * @return BitSet
     */
    public BitSet isScanRequired(byte[][] blockMaxValue, byte[][] blockMinValue,
        boolean[] isMinMaxSet) {
      BitSet bitSet = new BitSet(1);
      bitSet.flip(0, 1);
      return bitSet;
    }
  
    /**
     * It just reads necessary block for filter executor, it does not uncompress the data.
     *
     * @param rawBlockletColumnChunks
     */
    public void readColumnChunks(RawBlockletColumnChunks rawBlockletColumnChunks) {
      // do nothing
    }
  }
  