content: /*
   * Copyright [2021-present] [ahoo wang <ahoowang@qq.com> (https://github.com/Ahoo-Wang)].
   * 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 me.ahoo.cosid.annotation;
  
  import me.ahoo.cosid.accessor.IdDefinition;
  import me.ahoo.cosid.accessor.parser.FieldDefinitionParser;
  
  import lombok.extern.slf4j.Slf4j;
  
  import java.lang.reflect.Field;
  import java.util.List;
  import java.util.Optional;
  
  /**
   * Annotation FieldDefinitionParser.
   *
   * @author ahoo wang
   * @see CosId
   */
  @Slf4j
  public class AnnotationDefinitionParser implements FieldDefinitionParser {
  
      public static final AnnotationDefinitionParser INSTANCE = new AnnotationDefinitionParser();
  
      @Override
      public IdDefinition parse(List<Class<?>> lookupClassList, Field field) {
          CosId fieldCosId = field.getAnnotation(CosId.class);
          if (null != fieldCosId) {
              return new IdDefinition(fieldCosId.value(), field);
          }
          Optional<CosId> clazzCosIdOp = lookupClassList
              .stream()
              .filter(clazz -> clazz.isAnnotationPresent(CosId.class))
              .map(clazz -> clazz.getAnnotation(CosId.class))
              .findFirst();
          if (clazzCosIdOp.isEmpty()) {
              return IdDefinition.NOT_FOUND;
          }
          CosId clazzCosId = clazzCosIdOp.get();
          if (!field.getName().equals(clazzCosId.field())) {
              return IdDefinition.NOT_FOUND;
          }
          return new IdDefinition(clazzCosId.value(), field);
      }
  }
  