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.arrow.flatbuf;
  
  import com.google.flatbuffers.BaseVector;
  import com.google.flatbuffers.BooleanVector;
  import com.google.flatbuffers.ByteVector;
  import com.google.flatbuffers.Constants;
  import com.google.flatbuffers.DoubleVector;
  import com.google.flatbuffers.FlatBufferBuilder;
  import com.google.flatbuffers.FloatVector;
  import com.google.flatbuffers.IntVector;
  import com.google.flatbuffers.LongVector;
  import com.google.flatbuffers.ShortVector;
  import com.google.flatbuffers.StringVector;
  import com.google.flatbuffers.Struct;
  import com.google.flatbuffers.Table;
  import com.google.flatbuffers.UnionVector;
  import java.nio.ByteBuffer;
  import java.nio.ByteOrder;
  
  /**
   * ----------------------------------------------------------------------
   * Data structures for describing a table row batch (a collection of
   * equal-length Arrow arrays)
   * Metadata about a field at some level of a nested type tree (but not
   * its children).
   *
   * For example, a List<Int16> with values `[[1, 2, 3], null, [4], [5, 6], null]`
   * would have {length: 5, null_count: 2} for its List node, and {length: 6,
   * null_count: 0} for its Int16 node, as separate FieldNode structs
   */
  @SuppressWarnings("unused")
  public final class FieldNode extends Struct {
    public void __init(int _i, ByteBuffer _bb) { __reset(_i, _bb); }
    public FieldNode __assign(int _i, ByteBuffer _bb) { __init(_i, _bb); return this; }
  
    /**
     * The number of value slots in the Arrow array at this level of a nested
     * tree
     */
    public long length() { return bb.getLong(bb_pos + 0); }
    /**
     * The number of observed nulls. Fields with null_count == 0 may choose not
     * to write their physical validity bitmap out as a materialized buffer,
     * instead setting the length of the bitmap buffer to 0.
     */
    public long nullCount() { return bb.getLong(bb_pos + 8); }
  
    public static int createFieldNode(FlatBufferBuilder builder, long length, long nullCount) {
      builder.prep(8, 16);
      builder.putLong(nullCount);
      builder.putLong(length);
      return builder.offset();
    }
  
    public static final class Vector extends BaseVector {
      public Vector __assign(int _vector, int _element_size, ByteBuffer _bb) { __reset(_vector, _element_size, _bb); return this; }
  
      public FieldNode get(int j) { return get(new FieldNode(), j); }
      public FieldNode get(FieldNode obj, int j) {  return obj.__assign(__element(j), bb); }
    }
  }
  