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An off-heap reference implementation for Arrow columnar data format.

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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.arrow.vector.holders;

import org.apache.arrow.vector.complex.reader.FieldReader;
import org.apache.arrow.vector.types.Types;

/**
 * {@link ValueHolder} for Dense Union Vectors.
 */
public class DenseUnionHolder implements ValueHolder {
  public FieldReader reader;
  public int isSet;
  public byte typeId;

  public Types.MinorType getMinorType() {
    return reader.getMinorType();
  }

  public boolean isSet() {
    return isSet == 1;
  }
}