content: /*
   * Copyright 2023 Ant Group
   *
   * Licensed 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.alipay.antchain.bridge.commons.utils.codec.tlv.annotation;
  
  import java.lang.annotation.ElementType;
  import java.lang.annotation.Retention;
  import java.lang.annotation.RetentionPolicy;
  import java.lang.annotation.Target;
  
  /**
   * When TLV serialization, use a field of this class to
   * replace the serialized value of the whole class.
   * <p>
   *     For example, when {@code TLVUtils.encode} an object
   *     which has a field with type {@code Clazz}, the field
   *     will be serialized with the value {@code myValue} identified by the
   *     annotation {@code TLVMapping}.
   * </p>
   * <pre>
   * &#64;TLVMapping(fieldName = "myValue")
   * public class Clazz {
   *     private String myValue;
   * }
   * </pre>
   */
  @Retention(RetentionPolicy.RUNTIME)
  @Target({ElementType.TYPE})
  public @interface TLVMapping {
      String fieldName();
  }
  