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.result.vector.impl.directread;
  
  import java.util.BitSet;
  
  import org.apache.carbondata.core.scan.result.vector.CarbonColumnVector;
  import org.apache.carbondata.core.scan.result.vector.ColumnVectorInfo;
  
  /**
   * Factory to create ColumnarVectors for inverted index and delete delta queries.
   */
  public final class ColumnarVectorWrapperDirectFactory {
  
    /**
     * Gets carbon vector wrapper to fill the underlying vector based on inverted index and delete
     * delta.
     *
     * @param vectorInfo       vectorInfo used to get the complex child vector
     * @param columnVector     Actual vector to be filled.
     * @param invertedIndex    Inverted index of column page
     * @param nullBitset       row locations of nulls in bitset
     * @param deletedRows      deleted rows locations in bitset.
     * @param isnullBitsExists whether nullBitset present on this page, usually for dimension columns
     *                         there is no null bitset.
     * @return wrapped CarbonColumnVector
     */
    public static CarbonColumnVector getDirectVectorWrapperFactory(ColumnVectorInfo vectorInfo,
        CarbonColumnVector columnVector, int[] invertedIndex, BitSet nullBitset, BitSet deletedRows,
        boolean isnullBitsExists, boolean isDictVector) {
      // If it is sequential data filler then add the null bitset.
      if (columnVector instanceof SequentialFill) {
        if (columnVector.getType().isComplexType() && !vectorInfo.vectorStack.isEmpty()) {
          // update to child vector, as it is child vector filling flow
          columnVector = vectorInfo.vectorStack.peek();
        }
        // If it has inverted index then create a dummy delete rows bitset so that it goes to
        // ColumnarVectorWrapperDirectWithDeleteDeltaAndInvertedIndex, here it does the sequential
        // filling using another vector.
        if ((invertedIndex != null && invertedIndex.length > 0)) {
          if (deletedRows == null) {
            deletedRows = new BitSet();
          }
        } else if (deletedRows == null) {
          ((SequentialFill) columnVector).setNullBits(nullBitset);
        }
      }
      if ((invertedIndex != null && invertedIndex.length > 0) && (deletedRows == null)) {
        return new ColumnarVectorWrapperDirectWithInvertedIndex(columnVector, invertedIndex,
            isnullBitsExists);
      } else if ((invertedIndex == null || invertedIndex.length == 0) && deletedRows != null) {
        return new ColumnarVectorWrapperDirectWithDeleteDelta(columnVector, deletedRows, nullBitset);
      } else if ((invertedIndex != null && invertedIndex.length > 0) && deletedRows != null) {
        return new ColumnarVectorWrapperDirectWithDeleteDeltaAndInvertedIndex(columnVector,
            deletedRows, invertedIndex, nullBitset, isnullBitsExists, isDictVector);
      } else {
        return columnVector;
      }
    }
  
  }
  