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 com.google.flatbuffers.FlatBufferBuilder;
  import org.apache.arrow.flatbuf.Block;
  
  /** Metadata for an arrow message in a channel. */
  public class ArrowBlock implements FBSerializable {
  
    private final long offset;
    private final int metadataLength;
    private final long bodyLength;
  
    /**
     * Constructs a new instance.
     *
     * @param offset The offset into the channel file where the block was written.
     * @param metadataLength The length of the flatbuffer metadata in the block.
     * @param bodyLength The length of data in the block.
     */
    public ArrowBlock(long offset, int metadataLength, long bodyLength) {
      super();
      this.offset = offset;
      this.metadataLength = metadataLength;
      this.bodyLength = bodyLength;
    }
  
    public long getOffset() {
      return offset;
    }
  
    public int getMetadataLength() {
      return metadataLength;
    }
  
    public long getBodyLength() {
      return bodyLength;
    }
  
    @Override
    public int writeTo(FlatBufferBuilder builder) {
      return Block.createBlock(builder, offset, metadataLength, bodyLength);
    }
  
    @Override
    public int hashCode() {
      final int prime = 31;
      int result = 1;
      result = prime * result + (int) (bodyLength ^ (bodyLength >>> 32));
      result = prime * result + metadataLength;
      result = prime * result + (int) (offset ^ (offset >>> 32));
      return result;
    }
  
    @Override
    public boolean equals(Object obj) {
      if (this == obj) {
        return true;
      }
      if (obj == null) {
        return false;
      }
      if (getClass() != obj.getClass()) {
        return false;
      }
      ArrowBlock other = (ArrowBlock) obj;
      if (bodyLength != other.bodyLength) {
        return false;
      }
      if (metadataLength != other.metadataLength) {
        return false;
      }
      if (offset != other.offset) {
        return false;
      }
      return true;
    }
  }
  