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.asterix.common.annotations;
  
  import java.io.Serializable;
  import java.util.LinkedHashSet;
  import java.util.Objects;
  
  /**
   * Contains an ordered set of fields of a record
   */
  public final class RecordFieldOrderAnnotation implements IRecordTypeAnnotation, Serializable {
  
      private static final long serialVersionUID = 1L;
  
      private final LinkedHashSet<String> fieldNames;
  
      public RecordFieldOrderAnnotation(LinkedHashSet<String> fieldNames) {
          this.fieldNames = Objects.requireNonNull(fieldNames);
      }
  
      public LinkedHashSet<String> getFieldNames() {
          return fieldNames;
      }
  
      @Override
      public Kind getKind() {
          return Kind.RECORD_FIELD_ORDER;
      }
  
      @Override
      public boolean equals(Object o) {
          if (this == o)
              return true;
          if (o == null || getClass() != o.getClass())
              return false;
          RecordFieldOrderAnnotation that = (RecordFieldOrderAnnotation) o;
          return fieldNames.equals(that.fieldNames);
      }
  
      @Override
      public int hashCode() {
          return Objects.hash(fieldNames);
      }
  }
  