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;
  
  @SuppressWarnings("unused")
  public final class MetadataVersion {
    private MetadataVersion() { }
    /**
     * 0.1.0 (October 2016).
     */
    public static final short V1 = 0;
    /**
     * 0.2.0 (February 2017). Non-backwards compatible with V1.
     */
    public static final short V2 = 1;
    /**
     * 0.3.0 -> 0.7.1 (May - December 2017). Non-backwards compatible with V2.
     */
    public static final short V3 = 2;
    /**
     * >= 0.8.0 (December 2017). Non-backwards compatible with V3.
     */
    public static final short V4 = 3;
    /**
     * >= 1.0.0 (July 2020). Backwards compatible with V4 (V5 readers can read V4
     * metadata and IPC messages). Implementations are recommended to provide a
     * V4 compatibility mode with V5 format changes disabled.
     *
     * Incompatible changes between V4 and V5:
     * - Union buffer layout has changed. In V5, Unions don't have a validity
     *   bitmap buffer.
     */
    public static final short V5 = 4;
  
    public static final String[] names = { "V1", "V2", "V3", "V4", "V5", };
  
    public static String name(int e) { return names[e]; }
  }
  