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ColumnarVectorWrapperDirectFactory.java
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ColumnarVectorWrapperDirectFactory.java
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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
*
* 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;
/**
* 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 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(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 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;
}
}
}