/*
 * 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.fory.config;

/**
 * Strategy describing how deserialization handles enum values that cannot be resolved from the
 * serialized payload.
 */
public enum UnknownEnumValueStrategy {
  /** Throw an exception and stop deserialization. */
  NOT_ALLOWED,
  /** Return {@code null} instead of the unknown enum constant. */
  RETURN_NULL,
  /** Fallback to the first declared enum constant. */
  RETURN_FIRST_VARIANT,
  /** Fallback to the last declared enum constant. */
  RETURN_LAST_VARIANT
}
