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 com.aliyun.odps.table;
  
  import java.io.Serializable;
  import java.util.Arrays;
  import java.util.Map;
  import java.util.Objects;
  import java.util.Optional;
  import java.util.function.Function;
  import java.util.stream.Collectors;
  
  /**
   * Data format for table reader/writer.
   */
  public class DataFormat implements Serializable {
  
      private Type type;
      private Version version;
  
      public DataFormat() {
          this(Type.UNKNOWN, Version.UNKNOWN);
      }
  
      public DataFormat(Type type, Version version) {
          this.type = type;
          this.version = version;
      }
  
      public void setType(Type type) {
          this.type = type;
      }
  
      public Type getType() {
          return type;
      }
  
      public void setVersion(Version version) {
          this.version = version;
      }
  
      public Version getVersion() {
          return version;
      }
  
      @Override
      public boolean equals(Object o) {
          if (this == o) {
              return true;
          }
          if (o == null || getClass() != o.getClass()) {
              return false;
          }
          DataFormat that = (DataFormat) o;
          return Objects.equals(type, that.type)
                  && Objects.equals(version, that.version);
      }
  
      @Override
      public int hashCode() {
          return Objects.hash(type, version);
      }
  
      public enum Type {
          ARROW("ARROW"),
          RECORD("RECORD"),
          UNKNOWN("UNKNOWN");
  
          private final String typeStr;
  
          Type(String typeStr) {
              this.typeStr = typeStr;
          }
  
          @Override
          public String toString() {
              return typeStr;
          }
  
          private static final Map<String, Type> TYPE_MAP =
                  Arrays.stream(values())
                          .collect(Collectors.toMap(v -> v.typeStr, Function.identity()));
  
          public static Optional<Type> byTypeName(String type) {
              return Optional.ofNullable(TYPE_MAP.get(type));
          }
      }
  
      public enum Version {
  
          V5("V5"),
          UNKNOWN("UNKNOWN");
  
          private final String versionStr;
  
          Version(String versionStr) {
              this.versionStr = versionStr;
          }
  
          @Override
          public String toString() {
              return versionStr;
          }
  
          private static final Map<String, Version> CODE_MAP =
                  Arrays.stream(values())
                          .collect(Collectors.toMap(v -> v.versionStr, Function.identity()));
  
          public static Optional<Version> byCode(String code) {
              return Optional.ofNullable(CODE_MAP.get(code));
          }
      }
  
  }