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.vector.ipc.message;
  
  import static org.apache.arrow.memory.util.LargeMemoryUtil.checkedCastToInt;
  
  import com.google.flatbuffers.FlatBufferBuilder;
  import org.apache.arrow.flatbuf.FieldNode;
  
  /** Metadata about Vectors/Arrays that is written to a channel. */
  public class ArrowFieldNode implements FBSerializable {
  
    private final int length;
    private final int nullCount;
  
    /**
     * Constructs a new instance.
     *
     * @param length The number of values written.
     * @param nullCount The number of null values.
     */
    public ArrowFieldNode(long length, long nullCount) {
      super();
      this.length = checkedCastToInt(length);
      this.nullCount = checkedCastToInt(nullCount);
    }
  
    @Override
    public int writeTo(FlatBufferBuilder builder) {
      return FieldNode.createFieldNode(builder, length, nullCount);
    }
  
    public int getNullCount() {
      return nullCount;
    }
  
    public int getLength() {
      return length;
    }
  
    @Override
    public String toString() {
      return "ArrowFieldNode [length=" + length + ", nullCount=" + nullCount + "]";
    }
  }
  